BB-1913, Empire of Italia Battle SHip laid down 1913 (Engine 1912)
Displacement:
29,403 t light; 31,313 t standard; 33,336 t normal; 34,954 t full load
Dimensions: Length overall / water x beam x draught
595.00 ft / 595.00 ft x 98.50 ft x 28.00 ft (normal load)
181.36 m / 181.36 m x 30.02 m x 8.53 m
Armament:
10 - 14.00" / 356 mm guns (4 mounts), 1,372.00lbs / 622.33kg shells, 1913 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, all raised mounts - superfiring
16 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1913 Model
Breech loading guns in casemate mounts
on centreline, evenly spread, 10 raised mounts
6 guns in hull casemates - Limited use in heavy seas
Weight of broadside 14,720 lbs / 6,677 kg
Shells per gun, main battery: 150
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.5" / 343 mm 285.60 ft / 87.05 m 11.91 ft / 3.63 m
Ends: 7.00" / 178 mm 309.38 ft / 94.30 m 11.91 ft / 3.63 m
Main Belt covers 74 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Torpedo Bulkhead:
2.00" / 51 mm 285.60 ft / 87.05 m 27.28 ft / 8.31 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 12.0" / 305 mm 12.0" / 305 mm 8.00" / 203 mm
2nd: 6.00" / 152 mm - 2.00" / 51 mm
- Armour deck: 2.50" / 64 mm, Conning tower: 13.00" / 330 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 3 shafts, 55,366 shp / 41,303 Kw = 22.98 kts
Range 8,000nm at 12.00 kts
Bunker at max displacement = 3,641 tons
Complement:
1,233 - 1,603
Cost:
£3.146 million / $12.584 million
Distribution of weights at normal displacement:
Armament: 1,840 tons, 5.5 %
Armour: 9,234 tons, 27.7 %
- Belts: 3,157 tons, 9.5 %
- Torpedo bulkhead: 577 tons, 1.7 %
- Armament: 3,017 tons, 9.1 %
- Armour Deck: 2,194 tons, 6.6 %
- Conning Tower: 290 tons, 0.9 %
Machinery: 2,208 tons, 6.6 %
Hull, fittings & equipment: 13,121 tons, 39.4 %
Fuel, ammunition & stores: 3,933 tons, 11.8 %
Miscellaneous weights: 3,000 tons, 9.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
39,209 lbs / 17,785 Kg = 28.6 x 14.0 " / 356 mm shells or 6.1 torpedoes
Stability (Unstable if below 1.00): 1.07
Metacentric height 5.5 ft / 1.7 m
Roll period: 17.6 seconds
Steadiness - As gun platform (Average = 50 %): 40 %
- Recoil effect (Restricted arc if above 1.00): 0.56
Seaboat quality (Average = 1.00): 0.77
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.711
Length to Beam Ratio: 6.04 : 1
'Natural speed' for length: 24.39 kts
Power going to wave formation at top speed: 51 %
Trim (Max stability = 0, Max steadiness = 100): 42
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: 26.83 ft / 8.18 m
- Forecastle (26 %): 17.07 ft / 5.20 m
- Mid (50 %): 17.07 ft / 5.20 m
- Quarterdeck (26 %): 17.07 ft / 5.20 m
- Stern: 17.07 ft / 5.20 m
- Average freeboard: 18.09 ft / 5.51 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 93.3 %
- Above water (accommodation/working, high = better): 125.1 %
Waterplane Area: 47,437 Square feet or 4,407 Square metres
Displacement factor (Displacement / loading): 106 %
Structure weight / hull surface area: 212 lbs/sq ft or 1,033 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.09
- Longitudinal: 1.35
- Overall: 1.11
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather
Year must be in CCYY format eg 1950
250t- FC
100t - Aux FC
25t -Wireless Transmitter
250t- Admiral Accomidations
Please laugh away.... I think she is a tad overbuilt..... ;D
Ya gotta start somewhere.
-You don't need more than about 500 t of miscellaneous weight for stuff
-The main belt needs to be significantly longer to cover the important internal bits (like the magazines)
-Higher freeboard, on the order of six metres, would do wonders for your seakeeping
There are other nit-picks, but we can re-visit them later.
All of the following statements are IMHO, others will disagree, which is fine. That's the point.
1)Lengthen your main belt, it doesn't cover your mag/mach spaces.
2)1.5" is plenty think enough for a TDS, 2" isn't overkill, but it's a tad too much.
3)Thicken your deck armor, 3" should be fine, 3.5" would be outstanding.
4)You have ALL your MB guns listed as raised mounts. I assume you only want 2 MB turrets raised.
5)Thicker barbettes, thinner "other above deck" on the MB. 12" for the barbettes is good, 6-8" for the 'other' is fine.
6)You have 6 casemates in hull mounts(lower) and 10 in raised mounts. Do you want the 10 above main deck level, or on it?
7)More freeboard, your seakeeping is .77 (1 is pretty much the accepted minimum) and your stability is 40%, 50% is probably the minimum I'd take here.
8)She's overbuilt as is, a composite strength of 1.00 is the expected level. Over and you're waisting tonnage, under and she'll be unfit for service, unless a DD, which she's not.
9)250t for Admiral accomodations is high to me. I'd say 50t would be fine.
All I can think of right now. For a first crack, not bad on the whole.
Good luck. ;)
Did CtWaterman start to built before 1913?
1900 for ex?
;)
Ok I fixed alot of things but the Main guns are still screwed up. The Admiral Allocation is for the Admiral and his staff and his briefing room. Given that Im playing the Italians this includes a small allocation for a wine cellar and when the Admiral found out his allocation was going to be smaller then that new fangled fire control system they raised a ruckus.
Displacement:
29,403 t light; 31,313 t standard; 33,336 t normal; 34,954 t full load
Dimensions: Length overall / water x beam x draught
598.00 ft / 595.00 ft x 98.50 ft x 28.00 ft (normal load)
182.27 m / 181.36 m x 30.02 m x 8.53 m
Armament:
10 - 14.00" / 356 mm guns in single mounts, 1,372.00lbs / 622.33kg shells, 1913 Model Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 4 raised mounts - superfiring
6 guns in hull casemates - Limited use in heavy seas
16 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1913 Model
Breech loading guns in deck mounts with hoists
on centreline, evenly spread, 10 raised mounts
6 guns in hull casemates - Limited use in heavy seas
Weight of broadside 14,720 lbs / 6,677 kg
Shells per gun, main battery: 150
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.5" / 343 mm 455.00 ft / 138.68 m 11.91 ft / 3.63 m
Ends: 7.00" / 178 mm 455.00 ft / 138.68 m 11.91 ft / 3.63 m
Main Belt covers 118 % of normal length
- Torpedo Bulkhead:
1.75" / 44 mm 455.00 ft / 138.68 m 27.28 ft / 8.31 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 12.0" / 305 mm 6.00" / 152 mm 8.00" / 203 mm
2nd: 6.00" / 152 mm - 2.00" / 51 mm
- Armour deck: 3.50" / 89 mm, Conning tower: 13.00" / 330 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 3 shafts, 55,366 shp / 41,303 Kw = 22.98 kts
Range 8,000nm at 12.00 kts
Bunker at max displacement = 3,641 tons
Complement:
1,233 - 1,603
Cost:
£3.146 million / $12.584 million
Distribution of weights at normal displacement:
Armament: 1,840 tons, 5.5 %
Armour: 11,237 tons, 33.7 %
- Belts: 4,529 tons, 13.6 %
- Torpedo bulkhead: 804 tons, 2.4 %
- Armament: 2,543 tons, 7.6 %
- Armour Deck: 3,072 tons, 9.2 %
- Conning Tower: 290 tons, 0.9 %
Machinery: 2,208 tons, 6.6 %
Hull, fittings & equipment: 13,119 tons, 39.4 %
Fuel, ammunition & stores: 3,933 tons, 11.8 %
Miscellaneous weights: 1,000 tons, 3.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
52,025 lbs / 23,598 Kg = 37.9 x 14.0 " / 356 mm shells or 8.1 torpedoes
Stability (Unstable if below 1.00): 1.15
Metacentric height 6.4 ft / 1.9 m
Roll period: 16.4 seconds
Steadiness - As gun platform (Average = 50 %): 67 %
- Recoil effect (Restricted arc if above 1.00): 0.67
Seaboat quality (Average = 1.00): 1.39
Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.711
Length to Beam Ratio: 6.04 : 1
'Natural speed' for length: 24.39 kts
Power going to wave formation at top speed: 51 %
Trim (Max stability = 0, Max steadiness = 100): 48
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 3.00 ft / 0.91 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.83 ft / 8.18 m
- Forecastle (26 %): 26.00 ft / 7.92 m (24.00 ft / 7.32 m aft of break)
- Mid (50 %): 24.00 ft / 7.32 m
- Quarterdeck (26 %): 24.00 ft / 7.32 m
- Stern: 24.00 ft / 7.32 m
- Average freeboard: 24.61 ft / 7.50 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 85.3 %
- Above water (accommodation/working, high = better): 175.9 %
Waterplane Area: 47,437 Square feet or 4,407 Square metres
Displacement factor (Displacement / loading): 106 %
Structure weight / hull surface area: 200 lbs/sq ft or 978 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.08
- Longitudinal: 1.97
- Overall: 1.14
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily
Year must be in CCYY format eg 1950
250T FC
100T Aux FC
25T W/T
250T Admiral & Staff Accomidations
You've only accounted for 625t of misc weight, why the other 375t? I presume you're going for a Nevada layout on the MB, triples on deck level, twins superfiring? If so, put the 4 in the above freeboard column and leave the other blank. Then change the mounts on the weapons page to 4 instead of 10 and this will give you 2 triple on deck, and 2 twin superfiring.
10 - 14.00" / 356 mm guns in single mounts, 1,372.00lbs / 622.33kg shells, 1913 Model Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 4 raised mounts - superfiring
6 guns in hull casemates - Limited use in heavy seas
Certainly not
----------------
- Overall: 1.14
decrease block coef
beam & draught
overall must be 1.00
;)
BB-1913, Empire of Italia Battle SHip laid down 1913 (Engine 1912)
Displacement:
29,371 t light; 31,276 t standard; 33,056 t normal; 34,480 t full load
Dimensions: Length overall / water x beam x draught
593.00 ft / 590.00 ft x 98.50 ft x 28.00 ft (normal load)
180.75 m / 179.83 m x 30.02 m x 8.53 m
Armament:
10 - 14.00" / 356 mm guns (4 mounts), 1,372.00lbs / 622.33kg shells, 1913 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
16 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1913 Model
Breech loading guns in casemate mounts
on centreline ends, evenly spread, 6 raised mounts - superfiring
10 guns in hull casemates - Limited use in heavy seas
10 - 0.75" / 19.1 mm guns in single mounts, 0.00lbs / 0.00kg shells, 0 Model
Breech loading guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 14,720 lbs / 6,677 kg
Shells per gun, main battery: 150
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.5" / 343 mm 400.00 ft / 121.92 m 14.00 ft / 4.27 m
Ends: 8.00" / 203 mm 190.00 ft / 57.91 m 11.00 ft / 3.35 m
Upper: 7.00" / 178 mm 400.00 ft / 121.92 m 8.00 ft / 2.44 m
Main Belt covers 104 % of normal length
- Torpedo Bulkhead:
1.75" / 44 mm 368.00 ft / 112.17 m 27.28 ft / 8.31 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 12.0" / 305 mm 6.00" / 152 mm 8.00" / 203 mm
2nd: 6.00" / 152 mm - 2.00" / 51 mm
3rd: 1.00" / 25 mm - -
- Armour deck: 3.50" / 89 mm, Conning tower: 13.00" / 330 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 3 shafts, 72,181 shp / 53,847 Kw = 24.57 kts
Range 7,000nm at 12.00 kts
Bunker at max displacement = 3,205 tons
Complement:
1,225 - 1,593
Cost:
£3.247 million / $12.988 million
Distribution of weights at normal displacement:
Armament: 1,840 tons, 5.6 %
Armour: 11,714 tons, 35.4 %
- Belts: 4,929 tons, 14.9 %
- Torpedo bulkhead: 650 tons, 2.0 %
- Armament: 2,801 tons, 8.5 %
- Armour Deck: 3,046 tons, 9.2 %
- Conning Tower: 288 tons, 0.9 %
Machinery: 2,878 tons, 8.7 %
Hull, fittings & equipment: 11,939 tons, 36.1 %
Fuel, ammunition & stores: 3,685 tons, 11.1 %
Miscellaneous weights: 1,000 tons, 3.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
45,999 lbs / 20,865 Kg = 33.5 x 14.0 " / 356 mm shells or 6.6 torpedoes
Stability (Unstable if below 1.00): 1.12
Metacentric height 6.1 ft / 1.9 m
Roll period: 16.8 seconds
Steadiness - As gun platform (Average = 50 %): 53 %
- Recoil effect (Restricted arc if above 1.00): 0.70
Seaboat quality (Average = 1.00): 1.20
Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.711
Length to Beam Ratio: 5.99 : 1
'Natural speed' for length: 24.29 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 44
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 3.00 ft / 0.91 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.94 ft / 8.21 m
- Forecastle (24 %): 26.00 ft / 7.92 m (24.00 ft / 7.32 m aft of break)
- Mid (50 %): 24.00 ft / 7.32 m
- Quarterdeck (26 %): 24.00 ft / 7.32 m
- Stern: 24.00 ft / 7.32 m
- Average freeboard: 24.57 ft / 7.49 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 94.1 %
- Above water (accommodation/working, high = better): 175.5 %
Waterplane Area: 47,038 Square feet or 4,370 Square metres
Displacement factor (Displacement / loading): 100 %
Structure weight / hull surface area: 184 lbs/sq ft or 898 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 1.80
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
250T FC
100T Aux FC
25T W/T
250T Admiral and Staff Accomidations
Other Misc Weight for AAA Expansion Latter
Bravo!! Now if you just deepen her draft a little, maybe to 30' your block coefficient (BC) will come down below .7 and it should increase your stability a little and let you cut some more weight.
"- Stem: 26.94 ft / 8.21 m
- Forecastle (24 %): 26.00 ft / 7.92 m (24.00 ft / 7.32 m aft of break)
- Mid (50 %): 24.00 ft / 7.32 m
- Quarterdeck (26 %): 24.00 ft / 7.32 m
- Stern: 24.00 ft / 7.32 m
"
7.32m... too much freeboard for that BB
Decrease freeboard to increase stability
Jef ;)
Quote from: Sachmle on July 03, 2008, 08:18:49 AM
Quote from: Jefgte on July 03, 2008, 08:17:36 AM
"- Stem: 26.94 ft / 8.21 m
- Forecastle (24 %): 26.00 ft / 7.92 m (24.00 ft / 7.32 m aft of break)
- Mid (50 %): 24.00 ft / 7.32 m
- Quarterdeck (26 %): 24.00 ft / 7.32 m
- Stern: 24.00 ft / 7.32 m
"
7.32m... too much freeboard for that BB
Decrease freeboard to increase stability
Jef ;)
I don't know about that, I've seen alot of ships w/ freeboard as high as the draft is deep.
High freeboard is for fast speed (BC Alaska) but not for 24.5kts with lenght to beam ratio 6 : 1
Jef ;)
BB-1913, Empire of Italia Battle SHip laid down 1913 (Engine 1912)
Displacement:
28,570 t light; 30,457 t standard; 32,179 t normal; 33,557 t full load
Dimensions: Length overall / water x beam x draught
593.00 ft / 590.00 ft x 98.50 ft x 30.00 ft (normal load)
180.75 m / 179.83 m x 30.02 m x 9.14 m
Armament:
10 - 14.00" / 356 mm guns (4 mounts), 1,372.00lbs / 622.33kg shells, 1913 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
16 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1913 Model
Breech loading guns in casemate mounts
on centreline ends, evenly spread, 6 raised mounts - superfiring
10 guns in hull casemates - Limited use in heavy seas
10 - 0.75" / 19.1 mm guns in single mounts, 0.21lbs / 0.10kg shells, 1913 Model
Breech loading guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 14,722 lbs / 6,678 kg
Shells per gun, main battery: 150
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 14.0" / 356 mm 398.00 ft / 121.31 m 14.00 ft / 4.27 m
Ends: 8.00" / 203 mm 185.00 ft / 56.39 m 11.00 ft / 3.35 m
7.00 ft / 2.13 m Unarmoured ends
Upper: 8.00" / 203 mm 398.00 ft / 121.31 m 8.00 ft / 2.44 m
Main Belt covers 104 % of normal length
- Torpedo Bulkhead:
1.75" / 44 mm 368.00 ft / 112.17 m 27.28 ft / 8.31 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 13.0" / 330 mm 6.00" / 152 mm 8.00" / 203 mm
2nd: 6.00" / 152 mm - 2.00" / 51 mm
3rd: 1.00" / 25 mm - -
- Armour deck: 3.50" / 89 mm, Conning tower: 13.00" / 330 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 3 shafts, 78,986 shp / 58,923 Kw = 25.43 kts
Range 7,000nm at 12.00 kts
Bunker at max displacement = 3,100 tons
Complement:
1,200 - 1,561
Cost:
£3.258 million / $13.033 million
Distribution of weights at normal displacement:
Armament: 1,840 tons, 5.7 %
Armour: 11,649 tons, 36.2 %
- Belts: 5,140 tons, 16.0 %
- Torpedo bulkhead: 650 tons, 2.0 %
- Armament: 2,703 tons, 8.4 %
- Armour Deck: 2,872 tons, 8.9 %
- Conning Tower: 283 tons, 0.9 %
Machinery: 3,149 tons, 9.8 %
Hull, fittings & equipment: 11,307 tons, 35.1 %
Fuel, ammunition & stores: 3,609 tons, 11.2 %
Miscellaneous weights: 625 tons, 1.9 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
39,739 lbs / 18,025 Kg = 29.0 x 14.0 " / 356 mm shells or 5.8 torpedoes
Stability (Unstable if below 1.00): 1.12
Metacentric height 6.1 ft / 1.9 m
Roll period: 16.8 seconds
Steadiness - As gun platform (Average = 50 %): 47 %
- Recoil effect (Restricted arc if above 1.00): 0.63
Seaboat quality (Average = 1.00): 1.02
Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.646
Length to Beam Ratio: 5.99 : 1
'Natural speed' for length: 24.29 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 44
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 3.00 ft / 0.91 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 24.00 ft / 7.32 m
- Forecastle (26 %): 23.00 ft / 7.01 m (22.00 ft / 6.71 m aft of break)
- Mid (50 %): 22.00 ft / 6.71 m
- Quarterdeck (24 %): 22.00 ft / 6.71 m
- Stern: 22.00 ft / 6.71 m
- Average freeboard: 22.36 ft / 6.82 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 98.5 %
- Above water (accommodation/working, high = better): 154.9 %
Waterplane Area: 44,356 Square feet or 4,121 Square metres
Displacement factor (Displacement / loading): 97 %
Structure weight / hull surface area: 183 lbs/sq ft or 894 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.92
- Longitudinal: 1.72
- Overall: 0.98
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
250t FC
100t Aux FC
25t W/T
250t Admiral & Staff accomidations
Hmmmmmm...
"- Overall: 0.98"
------------------------
Decrease some thing to have Overall: 1.00
protection
speed
Miscelaneous weight for Admiral
...
-----------------------
"...Seaboat quality (Average = 1.00): 1.02"
Work on the forms of the hull to have:
"Good seaboat...
;)
*kicks program* the overall was 1.0 when I went to the make report function.... *sighs* I should have stayed in bed....
I dont get this you tell me to reduce the free board but when I do that my ship becomes tight and cramped and wet forward. The only way I have found to make the ships sea boat quality improve is to raise the free board... hmmm.... maybe up or down even more will work...... ???
I've been looking up real world examples to get an idea of what works. For instance, SS2 comes with an example of HMS Queen Elizabeth, which looked like a pretty good place to start, at least for freeboard.
Reducing by one deck at or aft of the midline was a common technique of the Dreadnought era and later, for instance.
There is a problem with my Bloody Battle Ships.... they keep sinking.... how in the heck do you get a ship to have good sea keeping abilities without overloading the Free Board if you use the suggested numbers the stupid things sink in stiff breezes.
There she is done I think ??? :o
BB-1913, Empire of Italia Battle SHip laid down 1913 (Engine 1912)
Displacement:
29,323 t light; 31,015 t standard; 32,759 t normal; 34,155 t full load
Dimensions: Length overall / water x beam x draught
590.00 ft / 590.00 ft x 98.00 ft x 30.00 ft (normal load)
179.83 m / 179.83 m x 29.87 m x 9.14 m
Armament:
10 - 14.00" / 356 mm guns (4 mounts), 1,372.00lbs / 622.33kg shells, 1913 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
16 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1913 Model
Breech loading guns in casemate mounts
on centreline ends, evenly spread, 6 raised mounts - superfiring
10 guns in hull casemates - Limited use in heavy seas
10 - 0.75" / 19.1 mm guns in single mounts, 0.21lbs / 0.10kg shells, 1913 Model
Breech loading guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 14,722 lbs / 6,678 kg
Shells per gun, main battery: 125
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 14.0" / 356 mm 398.00 ft / 121.31 m 14.00 ft / 4.27 m
Ends: 8.00" / 203 mm 185.00 ft / 56.39 m 11.00 ft / 3.35 m
7.00 ft / 2.13 m Unarmoured ends
Upper: 8.00" / 203 mm 398.00 ft / 121.31 m 8.00 ft / 2.44 m
Main Belt covers 104 % of normal length
- Torpedo Bulkhead:
1.75" / 44 mm 368.00 ft / 112.17 m 27.28 ft / 8.31 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 14.0" / 356 mm 6.00" / 152 mm 8.00" / 203 mm
2nd: 6.00" / 152 mm - 2.00" / 51 mm
3rd: 1.00" / 25 mm - -
- Armour deck: 3.50" / 89 mm, Conning tower: 13.00" / 330 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 3 shafts, 75,721 shp / 56,488 Kw = 25.06 kts
Range 7,000nm at 12.00 kts
Bunker at max displacement = 3,140 tons
Complement:
1,216 - 1,582
Cost:
£3.267 million / $13.068 million
Distribution of weights at normal displacement:
Armament: 1,840 tons, 5.6 %
Armour: 11,865 tons, 36.2 %
- Belts: 5,142 tons, 15.7 %
- Torpedo bulkhead: 650 tons, 2.0 %
- Armament: 2,889 tons, 8.8 %
- Armour Deck: 2,897 tons, 8.8 %
- Conning Tower: 287 tons, 0.9 %
Machinery: 3,019 tons, 9.2 %
Hull, fittings & equipment: 11,974 tons, 36.6 %
Fuel, ammunition & stores: 3,436 tons, 10.5 %
Miscellaneous weights: 625 tons, 1.9 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
44,359 lbs / 20,121 Kg = 32.3 x 14.0 " / 356 mm shells or 6.4 torpedoes
Stability (Unstable if below 1.00): 1.06
Metacentric height 5.4 ft / 1.7 m
Roll period: 17.6 seconds
Steadiness - As gun platform (Average = 50 %): 59 %
- Recoil effect (Restricted arc if above 1.00): 0.82
Seaboat quality (Average = 1.00): 1.23
A bit of the ships hull is un armored.
Ends: 8.00" / 203 mm 185.00 ft / 56.39 m 11.00 ft / 3.35 m
7.00 ft / 2.13 m Unarmoured ends
Increase the ends to 192 feet in length.
Also do you want a 25 knot ship and range at 7,000 nm is fairly high.
Michael
I miss the end of the report, freeboard, etc.
The 8" barbettes are IMO paper thin.
Fixed the Barbettes glaring problme there and the under armored ends....
I suspect she is probably a little over built right now....
BB-1913, Empire of Italia Battle SHip laid down 1913 (Engine 1912)
Displacement:
29,323 t light; 31,015 t standard; 32,759 t normal; 34,155 t full load
Dimensions: Length overall / water x beam x draught
590.00 ft / 590.00 ft x 98.00 ft x 30.00 ft (normal load)
179.83 m / 179.83 m x 29.87 m x 9.14 m
Armament:
10 - 14.00" / 356 mm guns (4 mounts), 1,372.00lbs / 622.33kg shells, 1913 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
16 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1913 Model
Breech loading guns in casemate mounts
on centreline ends, evenly spread, 6 raised mounts - superfiring
10 guns in hull casemates - Limited use in heavy seas
10 - 0.75" / 19.1 mm guns in single mounts, 0.21lbs / 0.10kg shells, 1913 Model
Breech loading guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 14,722 lbs / 6,678 kg
Shells per gun, main battery: 125
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.0" / 330 mm 398.00 ft / 121.31 m 14.00 ft / 4.27 m
Ends: 8.00" / 203 mm 192.00 ft / 58.52 m 11.00 ft / 3.35 m
Upper: 8.00" / 203 mm 398.00 ft / 121.31 m 8.00 ft / 2.44 m
Main Belt covers 104 % of normal length
- Torpedo Bulkhead:
1.75" / 44 mm 368.00 ft / 112.17 m 27.28 ft / 8.31 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 13.0" / 330 mm 6.00" / 152 mm 13.0" / 330 mm
2nd: 6.00" / 152 mm - 2.00" / 51 mm
3rd: 1.00" / 25 mm - -
- Armour deck: 3.50" / 89 mm, Conning tower: 13.00" / 330 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 3 shafts, 51,436 shp / 38,371 Kw = 22.74 kts
Range 7,000nm at 12.00 kts
Bunker at max displacement = 3,140 tons
Complement:
1,216 - 1,582
Cost:
£3.119 million / $12.477 million
Distribution of weights at normal displacement:
Armament: 1,840 tons, 5.6 %
Armour: 12,615 tons, 38.5 %
- Belts: 4,920 tons, 15.0 %
- Torpedo bulkhead: 650 tons, 2.0 %
- Armament: 3,860 tons, 11.8 %
- Armour Deck: 2,897 tons, 8.8 %
- Conning Tower: 287 tons, 0.9 %
Machinery: 2,051 tons, 6.3 %
Hull, fittings & equipment: 12,193 tons, 37.2 %
Fuel, ammunition & stores: 3,436 tons, 10.5 %
Miscellaneous weights: 625 tons, 1.9 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
50,510 lbs / 22,911 Kg = 36.8 x 14.0 " / 356 mm shells or 7.8 torpedoes
Stability (Unstable if below 1.00): 1.05
Metacentric height 5.3 ft / 1.6 m
Roll period: 17.8 seconds
Steadiness - As gun platform (Average = 50 %): 63 %
- Recoil effect (Restricted arc if above 1.00): 0.86
Seaboat quality (Average = 1.00): 1.50
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.661
Length to Beam Ratio: 6.02 : 1
'Natural speed' for length: 24.29 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 42
Bow angle (Positive = bow angles forward): -10.00 degrees
Stern overhang: -5.00 ft / -1.52 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 28.00 ft / 8.53 m
- Forecastle (21 %): 28.00 ft / 8.53 m
- Mid (70 %): 24.00 ft / 7.32 m (20.00 ft / 6.10 m aft of break)
- Quarterdeck (20 %): 22.00 ft / 6.71 m
- Stern: 22.00 ft / 6.71 m
- Average freeboard: 25.11 ft / 7.65 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 82.6 %
- Above water (accommodation/working, high = better): 176.1 %
Waterplane Area: 44,741 Square feet or 4,157 Square metres
Displacement factor (Displacement / loading): 102 %
Structure weight / hull surface area: 191 lbs/sq ft or 935 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.92
- Longitudinal: 1.99
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
250t FC
100t Aux FC
25t W/T
250t Admiral & Staff accomidations
Good BB, Well balanced.
If you want a round displacement,
29300t for ex, adjust the draught in mm
I mean 29323t for 9.14m
29300t for 9.13264m.
(You can reduce the number of shells from125 to 120 or less)
Round displacement is more easy to calculate the building plan, year after year.
Jef ;)
You have 5000t extra light displacement over Tennessee, going into armor and machinery. Possible savings are cutting armored deck by 0.50" (or not), upper and end belts to 4-6". 1.50 seaboat quality is overkill, 1.20 should be fine.
I also prefer having 1-2" thicker turret face than barbette, and it does not cost a lot.
The 250t of the battleship FC includes all the redundancy you need.
Ok will look at small tweakings of the ship.
The 100t Aux Fire Control was an attempt to have a back up in case of damage to Primary and to have a fire control station available for the 2nd Battery of 5" Guns to engage other targets then those being targeted by the Main Battery. Basically a ship better able to engage an Enemy BB and a Few TB or DD trying to make a Torpedo Run.
I see different people using different Tonnage figures for W/T or Marconi - is thier a set figure I missed somewhere.
http://www.navalism.org/index.php?topic=327.0 (http://www.navalism.org/index.php?topic=327.0) There ya go.
I think this is likely to be the final copy I took some of the advice and being able to play in metric millimeters appears to be quite effective. You would think that after 100 Years with it as our official system of measurement we could use it more often.
BB-1913, Empire of Italia Battle SHip laid down 1913 (Engine 1912)
Displacement:
28,943 t light; 30,627 t standard; 32,359 t normal; 33,746 t full load
Dimensions: Length overall / water x beam x draught
590.00 ft / 590.00 ft x 98.00 ft x 29.63 ft (normal load)
179.83 m / 179.83 m x 29.87 m x 9.03 m
Armament:
10 - 14.00" / 356 mm guns (4 mounts), 1,372.00lbs / 622.33kg shells, 1913 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
16 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1913 Model
Quick firing guns in casemate mounts
on centreline ends, evenly spread, 6 raised mounts - superfiring
10 guns in hull casemates - Limited use in heavy seas
10 - 0.75" / 19.1 mm guns in single mounts, 0.21lbs / 0.10kg shells, 1913 Model
Quick firing guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 14,722 lbs / 6,678 kg
Shells per gun, main battery: 125
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.0" / 330 mm 365.00 ft / 111.25 m 14.00 ft / 4.27 m
Ends: 5.00" / 127 mm 200.00 ft / 60.96 m 11.00 ft / 3.35 m
25.00 ft / 7.62 m Unarmoured ends
Upper: 8.00" / 203 mm 365.00 ft / 111.25 m 8.00 ft / 2.44 m
Main Belt covers 95 % of normal length
- Torpedo Bulkhead:
1.75" / 44 mm 365.00 ft / 111.25 m 27.28 ft / 8.31 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 14.5" / 368 mm 6.00" / 152 mm 13.0" / 330 mm
2nd: 6.00" / 152 mm - 2.00" / 51 mm
3rd: 1.00" / 25 mm - -
- Armour deck: 3.00" / 76 mm, Conning tower: 13.00" / 330 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 3 shafts, 61,563 shp / 45,926 Kw = 23.84 kts
Range 7,000nm at 12.00 kts
Bunker at max displacement = 3,119 tons
Complement:
1,206 - 1,568
Cost:
£3.166 million / $12.665 million
Distribution of weights at normal displacement:
Armament: 1,840 tons, 5.7 %
Armour: 11,755 tons, 36.3 %
- Belts: 4,429 tons, 13.7 %
- Torpedo bulkhead: 645 tons, 2.0 %
- Armament: 3,914 tons, 12.1 %
- Armour Deck: 2,483 tons, 7.7 %
- Conning Tower: 284 tons, 0.9 %
Machinery: 2,455 tons, 7.6 %
Hull, fittings & equipment: 12,268 tons, 37.9 %
Fuel, ammunition & stores: 3,416 tons, 10.6 %
Miscellaneous weights: 625 tons, 1.9 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
47,414 lbs / 21,506 Kg = 34.6 x 14.0 " / 356 mm shells or 7.1 torpedoes
Stability (Unstable if below 1.00): 1.08
Metacentric height 5.6 ft / 1.7 m
Roll period: 17.4 seconds
Steadiness - As gun platform (Average = 50 %): 53 %
- Recoil effect (Restricted arc if above 1.00): 0.79
Seaboat quality (Average = 1.00): 1.36
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.661
Length to Beam Ratio: 6.02 : 1
'Natural speed' for length: 24.29 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 39
Bow angle (Positive = bow angles forward): -10.00 degrees
Stern overhang: -5.00 ft / -1.52 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 28.00 ft / 8.53 m
- Forecastle (21 %): 28.00 ft / 8.53 m
- Mid (70 %): 24.00 ft / 7.32 m (20.00 ft / 6.10 m aft of break)
- Quarterdeck (20 %): 22.00 ft / 6.71 m
- Stern: 22.00 ft / 6.71 m
- Average freeboard: 25.11 ft / 7.65 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 88.6 %
- Above water (accommodation/working, high = better): 177.5 %
Waterplane Area: 44,741 Square feet or 4,157 Square metres
Displacement factor (Displacement / loading): 101 %
Structure weight / hull surface area: 193 lbs/sq ft or 943 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 1.98
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily
250t FC
100t Aux FC
25t W/T
250t Admiral & Staff accomidations