The
El Paso class art is finally more or less completed, so here are the stats, as promised. Five have been building during the course of 1919 and will enter service early in 1920. It's currently unknown if more will be built, or if a newer design will be developed. The Confederate Admiralty feels that a cruiser with only 6 main guns is a bit light in these times. The Confederate Congress feels that larger ships are too expensive. Only time will tell which side wins out.
(http://i142.photobucket.com/albums/r114/Carthaginian/Confederate%20Navy/ElPaso.png)
QuoteEl Paso, Confederate States of America 3rd Class Cruiser laid down 1919 (Engine 1916)
Displacement:
4,450 t light; 4,589 t standard; 5,000 t normal; 5,329 t full load
Dimensions: Length overall / water x beam x draught
445.00 ft / 435.00 ft x 38.00 ft x 20.00 ft (normal load)
135.63 m / 132.59 m x 11.58 m x 6.10 m
Armament:
6 - 5.50" / 140 mm guns (3x2 guns), 75.00lbs / 34.02kg shells, 1919 Model
Breech loading guns in deck mounts with hoists
on centreline ends, majority aft, 1 raised mount aft - superfiring
4 - 1.58" / 40.1 mm guns (2x2 guns), 2.00lbs / 0.91kg shells, 1919 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 458 lbs / 208 kg
Shells per gun, main battery: 150
6 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.00" / 76 mm 370.00 ft / 112.78 m 12.00 ft / 3.66 m
Ends: Unarmoured
Main Belt covers 131 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.50" / 38 mm 0.50" / 13 mm 1.50" / 38 mm
- Armour deck: 1.00" / 25 mm, Conning tower: 2.00" / 51 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 49,000 shp / 36,554 Kw = 30.12 kts
Range 6,100nm at 12.00 kts
Bunker at max displacement = 741 tons
Complement:
296 - 386
Cost:
£1.014 million / $4.054 million
Distribution of weights at normal displacement:
Armament: 63 tons, 1.3 %
Armour: 772 tons, 15.4 %
- Belts: 530 tons, 10.6 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 20 tons, 0.4 %
- Armour Deck: 209 tons, 4.2 %
- Conning Tower: 13 tons, 0.3 %
Machinery: 1,826 tons, 36.5 %
Hull, fittings & equipment: 1,677 tons, 33.5 %
Fuel, ammunition & stores: 550 tons, 11.0 %
Miscellaneous weights: 112 tons, 2.2 %
100t - Cruiser Fire Control
12t - 2x3x21" Torpedoes
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
3,189 lbs / 1,446 Kg = 38.3 x 5.5 " / 140 mm shells or 0.7 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 1.4 ft / 0.4 m
Roll period: 13.3 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.57
Seaboat quality (Average = 1.00): 1.35
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.529
Length to Beam Ratio: 11.45 : 1
'Natural speed' for length: 20.86 kts
Power going to wave formation at top speed: 60 %
Trim (Max stability = 0, Max steadiness = 100): 52
Bow angle (Positive = bow angles forward): 21.03 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.00 ft / 7.92 m
- Forecastle (15 %): 23.00 ft / 7.01 m
- Mid (35 %): 22.00 ft / 6.71 m (14.00 ft / 4.27 m aft of break)
- Quarterdeck (15 %): 14.00 ft / 4.27 m
- Stern: 14.00 ft / 4.27 m
- Average freeboard: 17.23 ft / 5.25 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 130.5 %
- Above water (accommodation/working, high = better): 89.7 %
Waterplane Area: 11,316 Square feet or 1,051 Square metres
Displacement factor (Displacement / loading): 99 %
Structure weight / hull surface area: 68 lbs/sq ft or 332 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.89
- Longitudinal: 2.70
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
Rather like it, very nice for a small cruiser...
One thing I was thinking of, for the drawing, at least, would be to move the aft guns aft a tad bit more, so you have a little more space to get both triple torpedo tubes to be able to fire on either beam...and perhaps install one of those new-fangled 'black-powder catapults' that Rohan is installing on their new cruiser. ;D
I love it!
It is nice to be sure.
Nice drawing, I like the concept.
Jef
Reminds me of the Dutch interwar cruisers.
D.
Yes, about right for a 5.5" ship.
Wooh! That's a very skinny cruiser you have there....I think it's skinnier than the Tomozuru that had the stablity problems.
Quote from: TexanCowboy on June 29, 2010, 07:21:57 AM
Wooh! That's a very skinny cruiser you have there....I think it's skinnier than the Tomozuru that had the stablity problems.
Tomozuru was an overloaded TB. Her beam figured into the incident, but only in that she had little reserve stability. I don't see that as an issue here.
Ahoj!
Once I figure out how to put two 5,3" guns into enclosed mounts with hoists :) I'll build something similar :D
Borys
Now actually looking in detail: she's a logical development of the 2nd flight of Chattanoogas. That's a good thing, IMHO. :)
One question: are the AA guns supposed to be in 2 mounts, or 4? They don't jibe, in my eye, with the illustration.
Yeah, the SS is wrong... the line drawing is right. It won't make any difference in the SS, though.
I used the Chatanoogas as a base for the class.
Of course, the 6 gun protected cruiser is becoming VERY outgunned these days. It seems that the El Paso and her sisters will likely be the last of their kind. Something very akin to the British Royal Navy's 6" cruisers will be next in line for the Admiralty's building plans.
Of course, there is a need for the Confederacyto have some better high-seas scouts...
perhaps something a bit more 'advanced' should be in order.
(http://i142.photobucket.com/albums/r114/Carthaginian/Confederate%20Navy/Pensacola.png)
A quick and dirty sim of what would happen if the crew at La Paz got their hands on an unfinished
El Paso class. The 5.5" guns are replaced with twin 4.75" guns forward to retain some self-defense capabilities. A pair (on flyable, one disassembled) of Sopwith Baby's are carried in a hanger aft with a catapult launch system and a recovery crane; all of this replaces the aft 5.5" turrets. The decrease in combat capabilities makes this pretty much unthinkable (it's a lousy tradeoff) but I was just going over some ideas in my head and this seemed like a logical (if outlandish) thing I could do to a ship already in service to make a fast floatplane carrier.
QuotePensacola, Confederate States of America 3rd Class Cruiser laid down 1919 (Engine 1916)
Displacement:
4,450 t light; 4,589 t standard; 5,000 t normal; 5,329 t full load
Dimensions: Length overall / water x beam x draught
445.00 ft / 435.00 ft x 38.00 ft x 20.00 ft (normal load)
135.63 m / 132.59 m x 11.58 m x 6.10 m
Armament:
4 - 4.75" / 121 mm guns (2x2 guns), 50.00lbs / 22.68kg shells, 1919 Model
Breech loading guns in deck mounts with hoists
on centreline, all forward, 1 raised mount - superfiring
4 - 1.58" / 40.1 mm guns (2x2 guns), 2.00lbs / 0.91kg shells, 1919 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 208 lbs / 94 kg
Shells per gun, main battery: 325
6 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.00" / 76 mm 370.00 ft / 112.78 m 12.00 ft / 3.66 m
Ends: Unarmoured
Main Belt covers 131 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.50" / 38 mm 0.50" / 13 mm 1.50" / 38 mm
- Armour deck: 1.00" / 25 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 49,000 shp / 36,554 Kw = 30.12 kts
Range 6,100nm at 12.00 kts
Bunker at max displacement = 741 tons
Complement:
296 - 386
Cost:
£0.948 million / $3.794 million
Distribution of weights at normal displacement:
Armament: 28 tons, 0.6 %
Armour: 751 tons, 15.0 %
- Belts: 530 tons, 10.6 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 12 tons, 0.2 %
- Armour Deck: 209 tons, 4.2 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 1,826 tons, 36.5 %
Hull, fittings & equipment: 1,596 tons, 31.9 %
Fuel, ammunition & stores: 550 tons, 11.0 %
Miscellaneous weights: 250 tons, 5.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
3,278 lbs / 1,487 Kg = 61.2 x 4.8 " / 121 mm shells or 0.7 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 1.4 ft / 0.4 m
Roll period: 13.4 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.27
Seaboat quality (Average = 1.00): 1.37
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.529
Length to Beam Ratio: 11.45 : 1
'Natural speed' for length: 20.86 kts
Power going to wave formation at top speed: 60 %
Trim (Max stability = 0, Max steadiness = 100): 52
Bow angle (Positive = bow angles forward): 21.03 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.00 ft / 7.92 m
- Forecastle (15 %): 23.00 ft / 7.01 m
- Mid (35 %): 22.00 ft / 6.71 m (14.00 ft / 4.27 m aft of break)
- Quarterdeck (15 %): 14.00 ft / 4.27 m
- Stern: 14.00 ft / 4.27 m
- Average freeboard: 17.23 ft / 5.25 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 128.6 %
- Above water (accommodation/working, high = better): 89.7 %
Waterplane Area: 11,316 Square feet or 1,051 Square metres
Displacement factor (Displacement / loading): 103 %
Structure weight / hull surface area: 65 lbs/sq ft or 316 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.90
- Longitudinal: 2.66
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
Another study moving through the Confederate Admiralty- a long-range fleet screen vessel.
They are deliberately designed to protect fleets at sea from destroyers, and nothing but...
though they they could, possibly...
maybe, serve as scouts.
Quote laid down 1920
Displacement:
2,825 t light; 2,951 t standard; 3,450 t normal; 3,849 t full load
Dimensions: Length overall / water x beam x draught
425.00 ft / 425.00 ft x 42.00 ft x 12.00 ft (normal load)
129.54 m / 129.54 m x 12.80 m x 3.66 m
Armament:
8 - 4.75" / 121 mm guns (4x2 guns), 50.00lbs / 22.68kg shells, 1920 Model
Quick firing guns in deck mounts
on centreline ends, evenly spread, 2 raised mounts - superfiring
8 - 1.00" / 25.4 mm guns (4x2 guns), 0.50lbs / 0.23kg shells, 1920 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 404 lbs / 183 kg
Shells per gun, main battery: 250
6 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm - -
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 41,000 shp / 30,586 Kw = 30.14 kts
Range 7,660nm at 14.00 kts
Bunker at max displacement = 899 tons
Complement:
224 - 292
Cost:
£0.815 million / $3.262 million
Distribution of weights at normal displacement:
Armament: 54 tons, 1.6 %
Armour: 18 tons, 0.5 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 18 tons, 0.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 1,434 tons, 41.6 %
Hull, fittings & equipment: 1,207 tons, 35.0 %
Fuel, ammunition & stores: 625 tons, 18.1 %
Miscellaneous weights: 112 tons, 3.2 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2,107 lbs / 956 Kg = 39.3 x 4.8 " / 121 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.45
Metacentric height 2.6 ft / 0.8 m
Roll period: 11.0 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.11
Seaboat quality (Average = 1.00): 0.79
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.564
Length to Beam Ratio: 10.12 : 1
'Natural speed' for length: 20.62 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 63
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 23.00 ft / 7.01 m
- Forecastle (15 %): 19.00 ft / 5.79 m
- Mid (35 %): 18.00 ft / 5.49 m (10.00 ft / 3.05 m aft of break)
- Quarterdeck (15 %): 10.00 ft / 3.05 m
- Stern: 10.00 ft / 3.05 m
- Average freeboard: 13.29 ft / 4.05 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 150.6 %
- Above water (accommodation/working, high = better): 102.5 %
Waterplane Area: 12,619 Square feet or 1,172 Square metres
Displacement factor (Displacement / loading): 101 %
Structure weight / hull surface area: 63 lbs/sq ft or 310 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.00
- Longitudinal: 1.04
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather
I like the concept, but the hull form could be tweaked - drop the BC down to about 0.5, then nudge the length/beam up a bit. It's not like you're trying to wedge it into a Type 1 slip.
Quote from: The Rock Doctor on July 23, 2010, 04:56:36 PM
I like the concept, but the hull form could be tweaked - drop the BC down to about 0.5, then nudge the length/beam up a bit. It's not like you're trying to wedge it into a Type 1 slip.
Nope, the only real requirement for this ship is "from concept to christening = 12 Months."
I based the hull form on another ship I was thinking about, which is not exactly suited to the new 'reconnaissance cruiser' concept that the CSA is considering. A better hull will likely fix most of the problems.
Fast, small and carrying a lot of torpedo firepower.
No room for guns or other frills- just a long-range torpedo attack craft, good for fending off invasions in calm coastal waters.
QuoteTDB-01, Confederate States of America Torpedo Defense Boat laid down 1920
Displacement:
203 t light; 208 t standard; 250 t normal; 284 t full load
Dimensions: Length overall / water x beam x draught
220.00 ft / 220.00 ft x 20.00 ft x 5.00 ft (normal load)
67.06 m / 67.06 m x 6.10 m x 1.52 m
5 - 21.0" / 533.4 mm above water torpedoes
Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 6,234 shp / 4,651 Kw = 27.00 kts
Range 470nm at 27.00 kts
Bunker at max displacement = 76 tons
Complement:
30 - 40
Cost:
£0.060 million / $0.241 million
Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 131 tons, 52.4 %
Hull, fittings & equipment: 62 tons, 24.7 %
Fuel, ammunition & stores: 47 tons, 18.9 %
Miscellaneous weights: 10 tons, 4.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
61 lbs / 28 Kg = 0.6 x 6 " / 152 mm shells or 0.1 torpedoes
Stability (Unstable if below 1.00): 1.06
Metacentric height 0.5 ft / 0.2 m
Roll period: 11.9 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 0.54
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.398
Length to Beam Ratio: 11.00 : 1
'Natural speed' for length: 14.83 kts
Power going to wave formation at top speed: 65 %
Trim (Max stability = 0, Max steadiness = 100): 94
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 9.00 ft / 2.74 m
- Forecastle (25 %): 7.00 ft / 2.13 m
- Mid (50 %): 6.00 ft / 1.83 m
- Quarterdeck (25 %): 5.00 ft / 1.52 m
- Stern: 4.00 ft / 1.22 m
- Average freeboard: 6.08 ft / 1.85 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 173.6 %
- Above water (accommodation/working, high = better): 22.4 %
Waterplane Area: 2,705 Square feet or 251 Square metres
Displacement factor (Displacement / loading): 56 %
Structure weight / hull surface area: 15 lbs/sq ft or 75 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 0.53
- Overall: 0.50
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is extremely poor
Caution: Lacks seaworthiness - very limited seakeeping ability
Trial Speed: 32.5 knots
This is a kind of "shinyo" - a kamikaze MTB.
A gun or two would be nice, so they have some form of defense against MTB's and can undertake patrol work if nessasary....2 1'' machine guns should do rather nicely.
Quote from: Jefgte on August 01, 2010, 03:56:42 PM
This is a kind of "shinyo" - a kamikaze MTB.
Well, not meant to be a kamikaze
per se... but it's definitely expendable and cheap.
A single Level 0 port can support 25 of them.
In an effort to replace the
TR-200 design, the Confederate Admiralty is looking for a new coastal torpedo ram design. intended to be deployed primarily in the Gulf of Texas. Desiring to keep the vessel small enough to produce in quantity, the displacement is limited to 750 tons.
Three Design Studies have been put forth:
QuoteStudy #1 750 tons, Confederate States of America Torpedo Ram (New) laid down 1920
Displacement:
750 t light; 779 t standard; 900 t normal; 996 t full load
Dimensions: Length overall / water x beam x draught
270.00 ft / 265.00 ft x 26.00 ft x 10.00 ft (normal load)
82.30 m / 80.77 m x 7.92 m x 3.05 m
Armament:
3 - 3.50" / 88.9 mm guns in single mounts, 25.00lbs / 11.34kg shells, 1920 Model
Quick firing guns in deck mounts
on centreline ends, majority aft
1 - 1.58" / 40.1 mm guns in single mounts, 2.00lbs / 0.91kg shells, 1920 Model
Anti-aircraft gun in deck mount
on side amidships, 1 raised gun
2 - 1.00" / 25.4 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1920 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 78 lbs / 35 kg
Shells per gun, main battery: 250
5 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.36" / 9 mm - -
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 24,991 shp / 18,643 Kw = 31.26 kts
Range 4,100nm at 14.00 kts
Bunker at max displacement = 217 tons
Complement:
81 - 106
Cost:
£0.239 million / $0.955 million
Distribution of weights at normal displacement:
Armament: 8 tons, 0.9 %
Armour: 2 tons, 0.2 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 2 tons, 0.2 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 483 tons, 53.7 %
Hull, fittings & equipment: 221 tons, 24.6 %
Fuel, ammunition & stores: 150 tons, 16.7 %
Miscellaneous weights: 35 tons, 3.9 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
196 lbs / 89 Kg = 9.1 x 3.5 " / 89 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.22
Metacentric height 1.0 ft / 0.3 m
Roll period: 11.2 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.12
Seaboat quality (Average = 1.00): 0.70
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.457
Length to Beam Ratio: 10.19 : 1
'Natural speed' for length: 16.28 kts
Power going to wave formation at top speed: 72 %
Trim (Max stability = 0, Max steadiness = 100): 70
Bow angle (Positive = bow angles forward): 15.53 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 18.00 ft / 5.49 m
- Forecastle (20 %): 17.00 ft / 5.18 m
- Mid (35 %): 16.00 ft / 4.88 m (8.00 ft / 2.44 m aft of break)
- Quarterdeck (10 %): 8.00 ft / 2.44 m
- Stern: 8.00 ft / 2.44 m
- Average freeboard: 11.16 ft / 3.40 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 185.4 %
- Above water (accommodation/working, high = better): 51.0 %
Waterplane Area: 4,420 Square feet or 411 Square metres
Displacement factor (Displacement / loading): 49 %
Structure weight / hull surface area: 25 lbs/sq ft or 123 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.76
- Overall: 0.57
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather
Gun Armor Note: The gun in Y position is unarmored; the guns in A and Z positions have 0.5" armored shields.
Trial Speed: 32.5 knots
Miscellaneous Weights:
10 tons: 5 x 21" torpedoes
25 tons: Room for Expansion
QuoteStudy #2 750 tons, Confederate States of America Torpedo Ram (New) laid down 1920
Displacement:
750 t light; 782 t standard; 900 t normal; 994 t full load
Dimensions: Length overall / water x beam x draught
270.00 ft / 265.00 ft x 26.00 ft x 10.00 ft (normal load)
82.30 m / 80.77 m x 7.92 m x 3.05 m
Armament:
2 - 4.75" / 121 mm guns in single mounts, 50.00lbs / 22.68kg shells, 1920 Model
Quick firing guns in deck mounts
on centreline ends, evenly spread
1 - 1.58" / 40.1 mm guns in single mounts, 2.00lbs / 0.91kg shells, 1920 Model
Anti-aircraft gun in deck mount
on side amidships, 1 raised gun
2 - 1.00" / 25.4 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1920 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 103 lbs / 47 kg
Shells per gun, main battery: 240
5 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.50" / 13 mm - -
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 25,000 shp / 18,650 Kw = 31.26 kts
Range 4,000nm at 14.00 kts
Bunker at max displacement = 212 tons
Complement:
81 - 106
Cost:
£0.246 million / $0.985 million
Distribution of weights at normal displacement:
Armament: 14 tons, 1.5 %
Armour: 3 tons, 0.3 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 3 tons, 0.3 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 474 tons, 52.7 %
Hull, fittings & equipment: 224 tons, 24.9 %
Fuel, ammunition & stores: 150 tons, 16.7 %
Miscellaneous weights: 35 tons, 3.9 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
193 lbs / 87 Kg = 3.6 x 4.8 " / 121 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.21
Metacentric height 0.9 ft / 0.3 m
Roll period: 11.3 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.16
Seaboat quality (Average = 1.00): 0.71
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.457
Length to Beam Ratio: 10.19 : 1
'Natural speed' for length: 16.28 kts
Power going to wave formation at top speed: 72 %
Trim (Max stability = 0, Max steadiness = 100): 71
Bow angle (Positive = bow angles forward): 15.53 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 18.00 ft / 5.49 m
- Forecastle (20 %): 17.00 ft / 5.18 m
- Mid (35 %): 16.00 ft / 4.88 m (8.00 ft / 2.44 m aft of break)
- Quarterdeck (10 %): 8.00 ft / 2.44 m
- Stern: 8.00 ft / 2.44 m
- Average freeboard: 11.16 ft / 3.40 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 186.6 %
- Above water (accommodation/working, high = better): 51.0 %
Waterplane Area: 4,420 Square feet or 411 Square metres
Displacement factor (Displacement / loading): 47 %
Structure weight / hull surface area: 25 lbs/sq ft or 124 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.79
- Overall: 0.57
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather
Trial Speed: 32.5 knots
Miscellaneous Weights:
10 tons: 5 x 21" torpedoes
25 tons: Room for Expansion
QuoteStudy #3 750 tons, Confederate States of America Torpedo Ram (New) laid down 1920
Displacement:
730 t light; 769 t standard; 900 t normal; 1,004 t full load
Dimensions: Length overall / water x beam x draught
270.00 ft / 265.00 ft x 26.00 ft x 10.00 ft (normal load)
82.30 m / 80.77 m x 7.92 m x 3.05 m
Armament:
3 - 4.75" / 121 mm guns in single mounts, 50.00lbs / 22.68kg shells, 1920 Model
Quick firing guns in deck mounts
on centreline ends, majority aft, 1 raised mount aft
1 - 1.58" / 40.1 mm guns in single mounts, 2.00lbs / 0.91kg shells, 1920 Model
Anti-aircraft gun in deck mount
on side amidships, 1 raised gun
2 - 1.00" / 25.4 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1920 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 153 lbs / 69 kg
Shells per gun, main battery: 245
5 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.36" / 9 mm - -
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 25,000 shp / 18,650 Kw = 31.26 kts
Range 4,450nm at 14.00 kts
Bunker at max displacement = 235 tons
Complement:
81 - 106
Cost:
£0.256 million / $1.024 million
Distribution of weights at normal displacement:
Armament: 20 tons, 2.3 %
Armour: 3 tons, 0.3 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 3 tons, 0.3 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 468 tons, 52.1 %
Hull, fittings & equipment: 228 tons, 25.3 %
Fuel, ammunition & stores: 170 tons, 18.9 %
Miscellaneous weights: 10 tons, 1.1 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
195 lbs / 88 Kg = 3.6 x 4.8 " / 121 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.27
Metacentric height 1.0 ft / 0.3 m
Roll period: 10.8 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.24
Seaboat quality (Average = 1.00): 0.71
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.457
Length to Beam Ratio: 10.19 : 1
'Natural speed' for length: 16.28 kts
Power going to wave formation at top speed: 72 %
Trim (Max stability = 0, Max steadiness = 100): 71
Bow angle (Positive = bow angles forward): 15.53 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 18.00 ft / 5.49 m
- Forecastle (20 %): 17.00 ft / 5.18 m
- Mid (35 %): 16.00 ft / 4.88 m (8.00 ft / 2.44 m aft of break)
- Quarterdeck (10 %): 8.00 ft / 2.44 m
- Stern: 8.00 ft / 2.44 m
- Average freeboard: 11.16 ft / 3.40 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 187.5 %
- Above water (accommodation/working, high = better): 51.0 %
Waterplane Area: 4,420 Square feet or 411 Square metres
Displacement factor (Displacement / loading): 47 %
Structure weight / hull surface area: 26 lbs/sq ft or 127 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.80
- Overall: 0.57
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather
Gun Armor Note: The gun in Y position is unarmored; the guns in A and Z positions have 0.5" armored shields.
Trial Speed: 32.5 knots
Miscellaneous Weights:
10 tons: 5 x 21" torpedoes
*fixed an 'oops'
None of them actually do fit a D0. I'd go with #2, myself - #1 may be a little crowded with the extra main gun (even if a smaller weapon) and #3 leaves no room for growth, such as an ASW kit.
Quote from: The Rock Doctor on August 02, 2010, 08:25:01 PM
None of them actually do fit a D0. I'd go with #2, myself - #1 may be a little crowded with the extra main gun (even if a smaller weapon) and #3 leaves no room for growth, such as an ASW kit.
Fixed the goof... and it's pretty tightly packed, but the ship that I got the idea from had an additional heavy AA on centerline on just 10 more feet... so it should fit even with 3 main guns.
I don't disagree that #1 will work - just that #2 will be a bit roomier.
Quote from: The Rock Doctor on August 02, 2010, 08:30:09 PM
I don't disagree that #1 will work - just that #2 will be a bit roomier.
Yeah... #2's primary advantage would be later growth for mounting ASW gear.
Right now, I'm not sure whether or not I'd not like to build them as #3 and save #2 as a 'modification' to the design later on to reflect 'new developments in ASW technology and tactics."
#2 also fits better into the CSA's current destroyer fleet, and could use standard 1500 ton ships as DDL's due to the commonality.
Self-serving design observation alert: The CSN still has these designs on the shelf:
http://www.navalism.org/index.php?topic=4415.0
Even though they have too much freeboard *wink*, for the tonnage, compared to these, the 750 tonners here don't seem to offer too much more. Some of the duration and or misc weight discrepancy could be made up for by lighter 1920 machinery. They carry less tubes, but 3 of these at 1500 total tons would ship 9 fish, while two of the 750 ton designs would carry 10.
The 1917 "Emergency" designs don't fit in a type 0 DD either, but at the time I rationalized that by counting the sheer number of type 1 and larger docks the CSA possesses.
(The 1917 Emergency program also bears the distinction of being my favorite DD illustration I've done so far too, so they have a special spot in my heart)
I didn't care to much for the 'Emergency' destroyers.
And I wanted the larger ships for the greater range, endurance, and firepower.
Well then, I'll slink back to my cave...
The G Class shares the problem that Rock pointed out about #3 of my Studies, Guinness... nowhere to go (a major problem with a lot of my older designs). As time goes on, these ships can have another torpedo or three added, have ASDIC installed, mount depth charges, ship mines, be loaded down with AAA or serve as light transports.
The Emergency Destroyers can't do any of those.
The Castle class is still VERY much a contender for a coastal minelayer... but the G Class probably will stay in the springsharp books.
A modification of Study #3 has been picked to serve as the next coastal torpedo ram of the CSN.
When the design is finished, it'll be posted here.
An export version- using 1916 E.Y. turbines- will be up for sale at a 25% premium in $ and BP.
Quote750 ton Coastal Torpedo Ram
3x1x4.75"/L50 50-pounder QF guns
1x1x1.58" AA cannon & 2x1x1" AA machine guns
1x3 & 1x2 21" TT in trainable mounts
20 tons for equipment addition
31.5 kts top speed; 4000 n. mi. @ 14 kts.
Interested buyers may apply to the Confederate Admiralty via the Confederate Consul in their nation.
More exact specifications will be given at that time.
In 1907, the Confederate Navy built four of what were widely argued to be 'the best cruiser design' of the time. They were spacious, heavily armed and armored, and possessed of a good cruising radius... if a bit slow. The
Rattlesnake class was probably the most overbuilt vessel that the Confederate Navy had ever fielded- and they proved immensely popular with both their crews and equally envied by sailors of other nations.
On the 13th anniversary of their christening, though, the once stellar ships are showing their ages. Their lack of speed was once slight; now it has become glaring. Their firepower and armament was once second-to-none; now it is barely adequate. The one thing that the ships still have going for them is the fact that they were massively overbuilt... which leaves some to believe that this situation had been foreseen, and that the ships were prepared for such a situation before the first rivet was driven.
Plans long in the works are slowly seeing light at the Admiralty, and these plans are more than sufficient to breath new life into the old cruisers. New armament schemes, upgraded engines and better fire control are planned to bring these aging ladies back to the fore.
The manually operated fore-and-aft 100-pounders are replaced by modern, electrically powered 75-pounder twin mounts in enclosed gunhouses; it is thought that these weapons (with their faster training speeds and greater ROF) will be sufficient for both primary target engagement and torpedo boat defense. The secondary battery of 25-pounders has been dispensed with in favor of a pair of long-range 25-pounder anti-dirigible weapons and several rapid-firing autocannon for use against areoplanes. The beam-mounted 100-pounders are replaced by no less than four triple 21" torpedo mounts, making the vessels highly dangerous to anything larger than themselves.
Below-decks, the changes are no less great. The turbines originally mounted in the vessels were nothing short of experimental units, having poor power-to-weight ratios and requiring more and more attention as they aged. A modern turbo-electric drive system will replace them, giving the ships far greater range and speed on par with the
Enterprise, which they will likely escort.
Finally, massive changes to the superstructure will be made in order to accommodate the planned changes to the armament scheme... and to allow for the embarkation of a floatplane, the first such facilities on any Confederate warship.
QuoteCettilvste, Confederate States of America 3rd Class Cruiser laid down 1907 (Engine 1920)
Displacement:
5,007 t light; 5,249 t standard; 5,932 t normal; 6,478 t full load
Dimensions: Length overall / water x beam x draught
470.00 ft / 470.00 ft x 50.00 ft x 19.00 ft (normal load)
143.26 m / 143.26 m x 15.24 m x 5.79 m
Armament:
8 - 5.50" / 140 mm guns (4x2 guns), 75.00lbs / 34.02kg shells, 1920 Model
Breech loading guns in deck mounts with hoists
on centreline ends, evenly spread, 2 raised mounts - superfiring
2 - 3.50" / 88.9 mm guns in single mounts, 25.00lbs / 11.34kg shells, 1920 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
4 - 1.50" / 38.1 mm guns in single mounts, 2.00lbs / 0.91kg shells, 1920 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
8 - 1.00" / 25.4 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1920 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 662 lbs / 300 kg
Shells per gun, main battery: 325
12 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.00" / 76 mm 340.00 ft / 103.63 m 12.00 ft / 3.66 m
Ends: Unarmoured
Main Belt covers 111 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.00" / 76 mm 1.00" / 25 mm 4.00" / 102 mm
2nd: 1.00" / 25 mm - -
- Armour deck: 2.00" / 51 mm, Conning tower: 3.00" / 76 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 4 shafts, 40,000 shp / 29,840 Kw = 28.20 kts
Range 7,690nm at 14.00 kts
Bunker at max displacement = 1,229 tons
Complement:
337 - 439
Cost:
£0.447 million / $1.786 million
Distribution of weights at normal displacement:
Armament: 90 tons, 1.5 %
Armour: 1,143 tons, 19.3 %
- Belts: 503 tons, 8.5 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 57 tons, 1.0 %
- Armour Deck: 562 tons, 9.5 %
- Conning Tower: 21 tons, 0.4 %
Machinery: 1,399 tons, 23.6 %
Hull, fittings & equipment: 2,176 tons, 36.7 %
Fuel, ammunition & stores: 925 tons, 15.6 %
Miscellaneous weights: 199 tons, 3.4 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
7,985 lbs / 3,622 Kg = 96.0 x 5.5 " / 140 mm shells or 1.3 torpedoes
Stability (Unstable if below 1.00): 1.19
Metacentric height 2.4 ft / 0.7 m
Roll period: 13.5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.36
Seaboat quality (Average = 1.00): 1.47
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.465
Length to Beam Ratio: 9.40 : 1
'Natural speed' for length: 21.68 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 48
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 24.00 ft / 7.32 m
- Forecastle (20 %): 18.00 ft / 5.49 m
- Mid (50 %): 18.00 ft / 5.49 m
- Quarterdeck (15 %): 18.00 ft / 5.49 m
- Stern: 18.00 ft / 5.49 m
- Average freeboard: 18.48 ft / 5.63 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 93.5 %
- Above water (accommodation/working, high = better): 100.1 %
Waterplane Area: 15,179 Square feet or 1,410 Square metres
Displacement factor (Displacement / loading): 122 %
Structure weight / hull surface area: 81 lbs/sq ft or 393 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.92
- Longitudinal: 2.08
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
Armament & Armor: 147 tons & $0.294
Machinery: 1,399 tons & $2.798
Torpedo Tubes: 24 tons & $0.048
_____________________________________
Material Cost: 1,570 tons & $3.140
Trim Change: 0 tons & $1.000
Miscellaneous Weight: 144 tons & $0.144
_____________________________________
Total Refit Cost: 1,714 tons & $4.284
OoC notes:
1.) the ships always bore the Mvskoke word for 'Rattlesnake' as a name; I just didn't know the proper word when I 'named' them originally. ;)
2.) I think they have made the transition from 'Peace Cruiser' to 'Escort Cruiser' rather well; having been so massively overbuilt when they were initially constructed, they had a lot of room to grow.
Glorious France agrees totaly.
The Crotalus Primus, "Primary Rattlesnake" became the grandfather of all modern French cruisers after the rebuild of the donated cruiser. The complete Demarce series finds its origin in this ship.
Looks good on paper.
A study for a (very unique) Confederate battleship...
Layout is similar to the
H.M.S. Nelson, with the twin turret being the aft-most and superfiring one. Secondary placement is identical to the
Nelson, but with an extra superfiring turret. The main armor belt only covers the engineering section and the magazines.
The lowered aft section contains a hanger with 3 aircraft and a catapult.
QuoteDisplacement:
30,000 t light; 31,642 t standard; 33,500 t normal; 34,986 t full load
Dimensions: Length overall / water x beam x draught
650.00 ft / 650.00 ft x 98.00 ft x 28.00 ft (normal load)
198.12 m / 198.12 m x 29.87 m x 8.53 m
Armament:
8 - 15.00" / 381 mm guns (3 mounts), 2,000.00lbs / 907.18kg shells, 1920 Model
Breech loading guns in turrets (on barbettes)
on centreline, all amidships, 1 raised mount - superfiring
16 - 5.50" / 140 mm guns (8x2 guns), 75.00lbs / 34.02kg shells, 1920 Model
Breech loading guns in deck mounts with hoists
on side, all aft, 4 raised mounts - superfiring
2 - 3.50" / 88.9 mm guns in single mounts, 25.00lbs / 11.34kg shells, 1920 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
4 - 1.58" / 40.1 mm guns in single mounts, 2.00lbs / 0.91kg shells, 1920 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
10 - 1.00" / 25.4 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1920 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 17,263 lbs / 7,830 kg
Shells per gun, main battery: 100
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 14.0" / 356 mm 456.00 ft / 138.99 m 17.60 ft / 5.36 m
Ends: Unarmoured
Main Belt covers 108 % of normal length
- Torpedo Bulkhead:
2.00" / 51 mm 456.00 ft / 138.99 m 32.00 ft / 9.75 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 14.0" / 356 mm 8.00" / 203 mm 13.0" / 330 mm
2nd: 3.00" / 76 mm 1.00" / 25 mm 3.00" / 76 mm
- Armour deck: 3.00" / 76 mm, Conning tower: 14.00" / 356 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 54,000 shp / 40,284 Kw = 23.17 kts
Range 6,964nm at 14.02 kts
Bunker at max displacement = 3,344 tons
Complement:
1,237 - 1,609
Cost:
£6.801 million / $27.205 million
Distribution of weights at normal displacement:
Armament: 1,861 tons, 5.6 %
Armour: 12,238 tons, 36.5 %
- Belts: 4,834 tons, 14.4 %
- Torpedo bulkhead: 1,080 tons, 3.2 %
- Armament: 3,284 tons, 9.8 %
- Armour Deck: 2,727 tons, 8.1 %
- Conning Tower: 313 tons, 0.9 %
Machinery: 1,888 tons, 5.6 %
Hull, fittings & equipment: 13,516 tons, 40.3 %
Fuel, ammunition & stores: 3,500 tons, 10.4 %
Miscellaneous weights: 496 tons, 1.5 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
56,706 lbs / 25,721 Kg = 33.6 x 15.0 " / 381 mm shells or 9.6 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 5.9 ft / 1.8 m
Roll period: 16.9 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.98
Seaboat quality (Average = 1.00): 1.55
Hull form characteristics:
Hull has low quarterdeck
Block coefficient: 0.657
Length to Beam Ratio: 6.63 : 1
'Natural speed' for length: 25.50 kts
Power going to wave formation at top speed: 47 %
Trim (Max stability = 0, Max steadiness = 100): 45
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.00 ft / 8.23 m
- Forecastle (20 %): 25.00 ft / 7.62 m
- Mid (60 %): 24.00 ft / 7.32 m
- Quarterdeck (25 %): 16.00 ft / 4.88 m (24.00 ft / 7.32 m before break)
- Stern: 16.00 ft / 4.88 m
- Average freeboard: 22.56 ft / 6.88 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 78.6 %
- Above water (accommodation/working, high = better): 184.3 %
Waterplane Area: 49,129 Square feet or 4,564 Square metres
Displacement factor (Displacement / loading): 107 %
Structure weight / hull surface area: 200 lbs/sq ft or 977 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.72
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
It seems you forgot the agreement of the Nassau Treaty, main battleline is 22 kts.... so, why build a 23.XX battleship.
Diminishing the speed with 1.XX kts can give you 9 main guns.
Because of general principles, I suppose. If the battleship is already damaged slightly, by battle, without time to repair, it can still maintain 22 knots. Considering that the CSA would be on the front lines in a war with Gran Columbia, it would be logical to build a ship that can still maintain the battleline even if damaged.
EDIT: BTW, you simmed it wrong. It should be Centerline, Grouped Forward.....and I also question the wisdom of having no secondaries to your stern.
OK... the main battery issue will be fixed, but only when I get back on my laptop. ;)
Maddox, the last few CSA battleships make 23 knots.
These ships work within Nassau and within my own independent battleline.
Actually nelson style is centerline - grouped center. (This pushes the superstructure aft like the Nelson)
Centerline - grouped forward is for ships like the Dunkerque.
Quote from: Carthaginian on August 22, 2010, 05:52:45 PM
OK... the main battery issue will be fixed, but only when I get back on my laptop. ;)
Maddox, the last few CSA battleships make 23 knots.
These ships work within Nassau and within my own independent battleline.
As long they achive the minimum standard, "Nassau" is happy. But speed does cost a lot.
Also, there is no "law enforcement" between the Nassau Partners.
The Newest Italia BB does 23.5 Knots I believe for exactly that reason it meets the minimum speed for the Battle Line but can still maintain that speed even while suffering some penetrating below the waterline hits.
The Confederacy is considering giving the very excellent
Hatchitigbee class a follow-on soon. These vessels will be based on the
Hatchitigbee in both layout and general duty requirements (trade protection and fleet scouting). They will, like their predecessors, feature the rather quaint retention of single mount & hoist 200-pounders... although these vessels have all-electric T&E and hoists, as well as completely enclosed gun mounts.
QuoteTuskaloosa, Confederate States of America 2nd Class Cruiser laid down 1920
Displacement:
7,075 t light; 7,323 t standard; 8,000 t normal; 8,542 t full load
Dimensions: Length overall / water x beam x draught
620.00 ft / 600.00 ft x 60.00 ft x 16.00 ft (normal load)
188.98 m / 182.88 m x 18.29 m x 4.88 m
Armament:
5 - 7.50" / 191 mm guns in single mounts, 200.00lbs / 90.72kg shells, 1920 Model
Breech loading guns in deck mounts with hoists
on centreline ends, majority aft, 2 raised mounts - superfiring
1 - 3.50" / 88.9 mm guns in single mounts, 25.00lbs / 11.34kg shells, 1920 Model
Anti-aircraft gun in deck mount
on centreline amidships, 1 raised gun
2 - 1.58" / 40.1 mm guns in single mounts, 2.01lbs / 0.91kg shells, 1920 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
7 - 1.00" / 25.4 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1920 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 1,033 lbs / 468 kg
Shells per gun, main battery: 150
6 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.00" / 76 mm 426.00 ft / 129.84 m 14.00 ft / 4.27 m
Ends: Unarmoured
Main Belt covers 109 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.00" / 76 mm 1.00" / 25 mm 3.00" / 76 mm
- Armour deck: 1.00" / 25 mm, Conning tower: 3.00" / 76 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 64,000 shp / 47,744 Kw = 30.96 kts
Range 6,130nm at 14.00 kts
Bunker at max displacement = 1,220 tons
Complement:
422 - 549
Cost:
£1.595 million / $6.379 million
Distribution of weights at normal displacement:
Armament: 135 tons, 1.7 %
Armour: 1,255 tons, 15.7 %
- Belts: 734 tons, 9.2 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 57 tons, 0.7 %
- Armour Deck: 438 tons, 5.5 %
- Conning Tower: 26 tons, 0.3 %
Machinery: 2,238 tons, 28.0 %
Hull, fittings & equipment: 3,235 tons, 40.4 %
Fuel, ammunition & stores: 925 tons, 11.6 %
Miscellaneous weights: 212 tons, 2.7 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
9,641 lbs / 4,373 Kg = 45.7 x 7.5 " / 191 mm shells or 1.4 torpedoes
Stability (Unstable if below 1.00): 1.25
Metacentric height 3.5 ft / 1.1 m
Roll period: 13.5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.27
Seaboat quality (Average = 1.00): 1.13
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.486
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 24.49 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 62
Bow angle (Positive = bow angles forward): 21.80 degrees
Stern overhang: 10.00 ft / 3.05 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 25.00 ft / 7.62 m
- Forecastle (15 %): 21.00 ft / 6.40 m
- Mid (60 %): 20.00 ft / 6.10 m (12.00 ft / 3.66 m aft of break)
- Quarterdeck (15 %): 12.00 ft / 3.66 m
- Stern: 12.00 ft / 3.66 m
- Average freeboard: 17.42 ft / 5.31 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 106.9 %
- Above water (accommodation/working, high = better): 165.3 %
Waterplane Area: 23,687 Square feet or 2,201 Square metres
Displacement factor (Displacement / loading): 114 %
Structure weight / hull surface area: 92 lbs/sq ft or 451 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.99
- Longitudinal: 1.00
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Miscellaneous Weight Breakdown:
100 tons - Fire Control
25 tons - 12 x 21" torpedoes (2t each)
50 tons - Expansion
5 guns (no matter the size) on a 7000ish ton ship just aren't enough. I felt that way about the Hatchitigbees too. I think the RoF will be too slow and there aren't enough barrels to make spotting effective at long range. 8x5.5" on the same size hull would be better in my opinion, and would make such a ship more versatile.
Quote from: Guinness on August 29, 2010, 03:12:56 PM
5 guns (no matter the size) on a 7000ish ton ship just aren't enough. I felt that way about the Hatchitigbees too. I think the RoF will be too slow and there aren't enough barrels to make spotting effective at long range. 8x5.5" on the same size hull would be better in my opinion, and would make such a ship more versatile.
Well, the ship isn't exactly supposed to be 'versatile'; it's supposed to be overwhelming in it's intended role- that being close combat with lighter cruisers. At ranges where the enemy can't knock holes in 3" armor with 5"-6" projectiles, the 7.5" guns could still do a great deal of damage.
Of course, with just a little bit of adjustment, I can create something of a '
Hawkins Light': 7x7.5" and 30 knots with the same armor.
QuoteTuskaloosa, Confederate States of America 2nd Class Cruiser laid down 1920
Displacement:
7,050 t light; 7,336 t standard; 7,998 t normal; 8,528 t full load
Dimensions: Length overall / water x beam x draught
620.00 ft / 600.00 ft x 60.00 ft x 16.00 ft (normal load)
188.98 m / 182.88 m x 18.29 m x 4.88 m
Armament:
5 - 7.50" / 191 mm guns in single mounts, 200.00lbs / 90.72kg shells, 1920 Model
Breech loading guns in deck mounts with hoists
on centreline ends, majority aft, 2 raised mounts - superfiring
2 - 7.50" / 191 mm guns in single mounts, 200.00lbs / 90.72kg shells, 1920 Model
Breech loading guns in deck mounts with hoists
on side, all amidships
2 - 3.50" / 88.9 mm guns in single mounts, 21.44lbs / 9.72kg shells, 1920 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
2 - 1.58" / 40.1 mm guns in single mounts, 2.00lbs / 0.91kg shells, 1920 Model
Anti-aircraft guns in deck mounts
on side, all aft
7 - 1.00" / 25.4 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1920 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 1,450 lbs / 658 kg
Shells per gun, main battery: 150
6 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.00" / 76 mm 416.00 ft / 126.80 m 14.00 ft / 4.27 m
Ends: Unarmoured
Main Belt covers 107 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.00" / 76 mm 1.00" / 25 mm 3.00" / 76 mm
2nd: 3.00" / 76 mm 1.00" / 25 mm 3.00" / 76 mm
- Armour deck: 1.00" / 25 mm, Conning tower: 3.00" / 76 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 58,000 shp / 43,268 Kw = 30.20 kts
Range 5,980nm at 14.00 kts
Bunker at max displacement = 1,191 tons
Complement:
422 - 549
Cost:
£1.633 million / $6.533 million
Distribution of weights at normal displacement:
Armament: 191 tons, 2.4 %
Armour: 1,263 tons, 15.8 %
- Belts: 720 tons, 9.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 80 tons, 1.0 %
- Armour Deck: 438 tons, 5.5 %
- Conning Tower: 26 tons, 0.3 %
Machinery: 2,028 tons, 25.4 %
Hull, fittings & equipment: 3,393 tons, 42.4 %
Fuel, ammunition & stores: 949 tons, 11.9 %
Miscellaneous weights: 174 tons, 2.2 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
10,263 lbs / 4,655 Kg = 48.7 x 7.5 " / 191 mm shells or 1.5 torpedoes
Stability (Unstable if below 1.00): 1.23
Metacentric height 3.4 ft / 1.0 m
Roll period: 13.7 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.37
Seaboat quality (Average = 1.00): 1.17
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.486
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 24.49 kts
Power going to wave formation at top speed: 51 %
Trim (Max stability = 0, Max steadiness = 100): 60
Bow angle (Positive = bow angles forward): 21.80 degrees
Stern overhang: 10.00 ft / 3.05 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 25.00 ft / 7.62 m
- Forecastle (15 %): 21.00 ft / 6.40 m
- Mid (60 %): 20.00 ft / 6.10 m (12.00 ft / 3.66 m aft of break)
- Quarterdeck (15 %): 12.00 ft / 3.66 m
- Stern: 12.00 ft / 3.66 m
- Average freeboard: 17.42 ft / 5.31 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 103.3 %
- Above water (accommodation/working, high = better): 165.3 %
Waterplane Area: 23,685 Square feet or 2,200 Square metres
Displacement factor (Displacement / loading): 114 %
Structure weight / hull surface area: 97 lbs/sq ft or 473 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.99
- Longitudinal: 1.04
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
(http://a.imageshack.us/img838/4106/crhawkins.png)
Image by ShinRa, based on parts by thesmilingassassin
Reminds me of this.
Quote from: Sachmle on August 29, 2010, 03:31:27 PM
(http://a.imageshack.us/img838/4106/crhawkins.png)
Image by ShinRa, based on parts by thesmilingassassin
Reminds me of this.
It should... that was where the
Hatchitigbee class (planned as 6 strong before RL had other things to say) was going to wind up in 1920. I've always had a soft spot for the
Hawkins class... after all, they defined 'heavy cruiser'.
I like the 7 gun ship better. Also, the CSA has the 7.5"L45 in twins, fielded in the refit Buchanon and Mobile classes. If you are going to mount singles in enclosed gunhouses, the twins would be just as useful, and possibly a more efficient use of space. I suppose the drawback is that with twins (either mount and hoist or in turrets) you'd need to ship 250t fire control. That extra 150t would buy a more effective FC installation though.
It'd buy a FC that is above and beyond what the ship would need.
This ship isn't, like an armored cruiser or a battleship, planning to shoot at things that it can barely see. It's designed to engage ships with lighter guns while maintaining itself in it's immune zone to their return fire. For the average 6" gun, this shouldn't require BB.AC fire control, or every ship engaging a 6" vessel would require BB/AC fire control.
A hunter doesn't need a 10-40x50mm scope if he is shooting short shot- a little 3-power will do fine.
Likewise, this cruiser doesn't need a 15m rangefinder to engage effectively- and very successfully- targets at medium range who are firing back with similar optics and less powerful weapons.
Why not using the French 195 mm twin enclosed mount and hoist, as used on the D IV's?
Quote from: maddox on August 29, 2010, 05:15:56 PM
Why not using the French 195 mm twin enclosed mount and hoist, as used on the D IV's?
I've thought abut using twin M&H for this ship, but I just can't bring myself to do it.
A '2nd Class Cruiser' just doesn't seem 'second class' if it looks like a heavy cruiser.
As the
Wheeler class has been judged a success at it's intended role (occupying much larger ships at a much smaller cost), so a follow-on class has been ordered by the Admiralty. The
Tenetke class is half a knot slower than their older cousins, but their battery of ten 400-pounders makes them live up to their name- the Mvskoke word for 'Thunder.' Packing this respectable increase in firepower into a package only slightly longer and only 700 tons heavier than the
Wheeler has been made possible by the recent advances in turbine technology and in the introduction of more efficient generators... though it still comes at a cost.
The ship has also had it's secondary battery deliberately split into single and double mounts in order to have four 50-poundes set as near to the edges of the superstructure as possible on order to give some anti-TB coverage to the bow and stern of the ship. Also, the torpedo battery has increased to include a pair of twin tubes on the fantail- the Admiralty obstinately insists that they are there to 'deter pursuers,' though what ship they believe might intend to catch the
Tenetke is a mystery to the designers.
Two are planned for laydown in 1920 after the
Tennessee class are completed:
Tenetke (Thunder)
Vtoyehvette (Lightning)
QuoteTenetke, Confederate States of America 1st Class Cruiser laid down 1920
Displacement:
17,300 t light; 18,097 t standard; 19,800 t normal; 21,162 t full load
Dimensions: Length overall / water x beam x draught
690.00 ft / 680.00 ft x 70.00 ft x 26.00 ft (normal load)
210.31 m / 207.26 m x 21.34 m x 7.92 m
Armament:
10 - 9.20" / 234 mm guns (5x2 guns), 400.00lbs / 181.44kg shells, 1920 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority aft, 2 raised mounts - superfiring
12 - 4.75" / 121 mm guns (8 mounts), 50.00lbs / 22.68kg shells, 1920 Model
Quick firing guns in deck mounts
on side, all amidships
2 - 3.50" / 88.9 mm guns in single mounts, 25.00lbs / 11.34kg shells, 1920 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
4 - 1.58" / 40.1 mm guns in single mounts, 2.00lbs / 0.91kg shells, 1920 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
10 - 1.00" / 25.4 mm guns in one mount, 0.50lbs / 0.23kg shells, 1920 Model
Anti-aircraft guns in deck mount
on side, 4 raised guns
Weight of broadside 4,663 lbs / 2,115 kg
Shells per gun, main battery: 150
12 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 8.00" / 203 mm 470.00 ft / 143.26 m 17.60 ft / 5.36 m
Ends: Unarmoured
Main Belt covers 106 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 10.0" / 254 mm 4.00" / 102 mm 6.00" / 152 mm
2nd: 1.00" / 25 mm - -
- Armour deck: 2.50" / 64 mm, Conning tower: 9.00" / 229 mm
Machinery:
Oil fired boilers, steam turbines,
Electric motors, 4 shafts, 118,000 shp / 88,028 Kw = 31.53 kts
Range 9,130nm at 14.00 kts
Bunker at max displacement = 3,065 tons
Complement:
833 - 1,084
Cost:
£3.936 million / $15.745 million
Distribution of weights at normal displacement:
Armament: 574 tons, 2.9 %
Armour: 5,462 tons, 27.6 %
- Belts: 2,742 tons, 13.9 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 1,027 tons, 5.2 %
- Armour Deck: 1,551 tons, 7.8 %
- Conning Tower: 142 tons, 0.7 %
Machinery: 4,126 tons, 20.8 %
Hull, fittings & equipment: 6,740 tons, 34.0 %
Fuel, ammunition & stores: 2,500 tons, 12.6 %
Miscellaneous weights: 398 tons, 2.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
22,117 lbs / 10,032 Kg = 56.8 x 9.2 " / 234 mm shells or 2.1 torpedoes
Stability (Unstable if below 1.00): 1.12
Metacentric height 3.7 ft / 1.1 m
Roll period: 15.4 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.60
Seaboat quality (Average = 1.00): 1.02
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.560
Length to Beam Ratio: 9.71 : 1
'Natural speed' for length: 26.08 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 49
Bow angle (Positive = bow angles forward): 19.02 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 29.00 ft / 8.84 m
- Forecastle (20 %): 23.00 ft / 7.01 m
- Mid (65 %): 22.00 ft / 6.71 m (14.00 ft / 4.27 m aft of break)
- Quarterdeck (15 %): 14.00 ft / 4.27 m
- Stern: 14.00 ft / 4.27 m
- Average freeboard: 20.11 ft / 6.13 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 92.7 %
- Above water (accommodation/working, high = better): 126.0 %
Waterplane Area: 33,531 Square feet or 3,115 Square metres
Displacement factor (Displacement / loading): 106 %
Structure weight / hull surface area: 128 lbs/sq ft or 627 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.13
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Then what exactly is the TT layout, if two are aft, and you don't have the tech yet for quintuple mounts?
Quote from: TexanCowboy on August 31, 2010, 08:13:13 PM
Then what exactly is the TT layout, if two are aft, and you don't have the tech yet for quintuple mounts?
Two triples are on the beam in the same place as with the
Wheeler class.
Two twin mounts are located on the fantail in roughly the same positions as the catapults on a
South Dakota.
I thought I was fairly specific in the description about that.
Quote from: Carthaginian on August 31, 2010, 08:18:31 PM
Quote from: TexanCowboy on August 31, 2010, 08:13:13 PM
Then what exactly is the TT layout, if two are aft, and you don't have the tech yet for quintuple mounts?
Two triples are on the beam in the same place as with the Wheeler class.
Two twin mounts are located on the fantail in roughly the same positions as the catapults on a South Dakota.
I thought I was fairly specific in the description about that.
(2x3)+(2x2)=10. You listed 12.
Quote from: Sachmle on August 31, 2010, 09:13:40 PM
Quote from: Carthaginian on August 31, 2010, 08:18:31 PM
Quote from: TexanCowboy on August 31, 2010, 08:13:13 PM
Then what exactly is the TT layout, if two are aft, and you don't have the tech yet for quintuple mounts?
Two triples are on the beam in the same place as with the Wheeler class.
Two twin mounts are located on the fantail in roughly the same positions as the catapults on a South Dakota.
I thought I was fairly specific in the description about that.
(2x3)+(2x2)=10. You listed 12.
Whoops... forgot to update the torps.
Drat.
Well, there would only be 10 tubes, though 12 could be mounted... makes little difference, really.
I should order 2 of those, Frenchified of course.
I adore the names. Powerful ship, too.
Quote from: The Rock Doctor on September 01, 2010, 05:53:04 PM
I adore the names. Powerful ship, too.
The CSA- with so damn many of my outdated and tightly-built BB's to upgrade- can't manage the battle cruiser game ATM.
So, we'll have to make ships that require battle cruisers to hunt, but only cost 60% as much to build. It's just an economy issue.
Of course, the REAL issue is how I can turn the
Okie class into something semi-useful in modern warfare.
The
Oklahoma class are also planned to undergo a very minimalist refit sometime in the 1920-1921 timeframe. Though they are still very hard nuts to crack, they are getting to be rather slow and their armament scheme is very dated. This refit brings them into the modern era, and has some rather pleasant side effects as well- a knot and a half speed gain!
QuoteOklahoma, Confederate States of America Battleship laid down 1910 (Engine 1920)
Displacement:
18,501 t light; 19,635 t standard; 20,586 t normal; 21,346 t full load
Dimensions: Length overall / water x beam x draught
500.00 ft / 500.00 ft x 90.00 ft x 24.50 ft (normal load)
152.40 m / 152.40 m x 27.43 m x 7.47 m
Armament:
8 - 13.50" / 343 mm guns (4x2 guns), 1,500.00lbs / 680.39kg shells, 1910 Model
Breech loading guns in turrets (on barbettes)
on centreline, evenly spread, 1 raised mount
Aft Main mounts separated by engine room
10 - 5.50" / 140 mm guns in single mounts, 75.00lbs / 34.02kg shells, 1910 Model
Breech loading guns in casemate mounts
on side, all amidships
10 guns in hull casemates - Limited use in heavy seas
3 - 3.50" / 88.9 mm guns in single mounts, 25.00lbs / 11.34kg shells, 1910 Model
Anti-aircraft guns in deck mounts
on centreline, evenly spread, all raised mounts
3 - 1.58" / 40.1 mm guns in single mounts, 2.00lbs / 0.91kg shells, 1910 Model
Anti-aircraft guns in deck mounts
on centreline, evenly spread, all raised mounts
10 - 1.00" / 25.4 mm guns (10x1 guns), 0.50lbs / 0.23kg shells, 1910 Model
Machine guns in deck mounts
on side, evenly spread, 6 raised mounts
Weight of broadside 12,836 lbs / 5,822 kg
Shells per gun, main battery: 100
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.0" / 330 mm 350.00 ft / 106.68 m 16.00 ft / 4.88 m
Ends: 4.00" / 102 mm 150.00 ft / 45.72 m 12.00 ft / 3.66 m
Upper: 6.00" / 152 mm 200.00 ft / 60.96 m 8.00 ft / 2.44 m
Main Belt covers 108 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 13.0" / 330 mm 4.00" / 102 mm 12.0" / 305 mm
2nd: 6.00" / 152 mm 4.00" / 102 mm 4.00" / 102 mm
- Armour deck: 2.50" / 64 mm, Conning tower: 13.00" / 330 mm
Machinery:
Oil fired boilers, steam turbines,
Electric motors, 4 shafts, 33,200 shp / 24,767 Kw = 21.48 kts
Range 6,690nm at 12.00 kts
Bunker at max displacement = 1,711 tons
Complement:
859 - 1,117
Cost:
£1.939 million / $7.755 million
Distribution of weights at normal displacement:
Armament: 1,344 tons, 6.5 %
Armour: 7,737 tons, 37.6 %
- Belts: 3,951 tons, 19.2 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 1,976 tons, 9.6 %
- Armour Deck: 1,600 tons, 7.8 %
- Conning Tower: 210 tons, 1.0 %
Machinery: 1,161 tons, 5.6 %
Hull, fittings & equipment: 7,808 tons, 37.9 %
Fuel, ammunition & stores: 2,085 tons, 10.1 %
Miscellaneous weights: 452 tons, 2.2 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
26,804 lbs / 12,158 Kg = 21.8 x 13.5 " / 343 mm shells or 3.4 torpedoes
Stability (Unstable if below 1.00): 1.08
Metacentric height 5.0 ft / 1.5 m
Roll period: 17.0 seconds
Steadiness - As gun platform (Average = 50 %): 61 %
- Recoil effect (Restricted arc if above 1.00): 0.65
Seaboat quality (Average = 1.00): 1.09
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.654
Length to Beam Ratio: 5.56 : 1
'Natural speed' for length: 22.36 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 56
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 25.00 ft / 7.62 m
- Forecastle (15 %): 20.00 ft / 6.10 m
- Mid (50 %): 20.00 ft / 6.10 m (12.00 ft / 3.66 m aft of break)
- Quarterdeck (15 %): 12.00 ft / 3.66 m
- Stern: 12.00 ft / 3.66 m
- Average freeboard: 16.30 ft / 4.97 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 70.6 %
- Above water (accommodation/working, high = better): 122.7 %
Waterplane Area: 34,584 Square feet or 3,213 Square metres
Displacement factor (Displacement / loading): 97 %
Structure weight / hull surface area: 173 lbs/sq ft or 844 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.69
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Old Engines: 1,182 tons
New Engines: 1,161 tons
New Engines: 1.161 BP
New Guns: 0.009 BP
------------------------------------
Total BP Cost: 1.170 BP
x 2
------------------------------------
Equipment Cost: $2.34
+ 20% Orig. Cost: $3.70
------------------------------------
Total Cost: $6.04
The three 25-pounder anti-airship guns are located port and starbord of the bridge, and on the 'Q' turret.
The 2-pounder AA guns are located on the tops of 'A', 'X' and 'Y' turrets.
The half-pounder MG's are dispersed about the ship where ever there is room. :)