Heavy Cruisers

AnchorSteam · August 10, 2020, 08:01:45 PM

coming soon.....

AnchorSteam · August 12, 2020, 09:28:08 PM

TWO of these, from Kirk

So this is a great comparison of the "price" paid for speed.
Virtually the same tonnage as Foxy's 6250 ton 8x 180mm, 25knot ship.

Close in date, 1909 vs. 1910 isn't a huge difference..with 1910 engines about 200 tons more 'stuff' could be fitted.
Coincidentally, with 1910 engines, the belt could be 150 and so the slopes of the protective deck could be 180mm..

20m longer, and 2 knots faster.
Also 8x 180mm,

but instead of a narrow 181mm main belt and a 102mm upper belt, with an overly thick 51mm protective deck...

just a protective deck - albeit 150mm on the slopes and 30mm on the crown.

In a slugging match between the two, this one looses. But she's faster, longer ranged, and better seakeeping.

That's the fun of ship design - making design trade offs :)

PC-6, Parthia Protected Cruiser Series V laid down 1909

Displacement:
5,992 t light; 6,263 t standard; 7,023 t normal; 7,630 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(492.13 ft / 475.72 ft) x 52.49 ft x (19.69 / 20.96 ft)
(150.00 m / 145.00 m) x 16.00 m x (6.00 / 6.39 m)

Armament:
8 - 7.09" / 180 mm 45.0 cal guns - 179.46lbs / 81.40kg shells, 140 per gun
Breech loading guns in deck and hoist mounts, 1909 Model
4 x Single mounts on centreline ends, evenly spread
2 raised mounts - superfiring
4 x Single mounts on side ends, evenly spread
8 - 3.54" / 90.0 mm 45.0 cal guns - 22.05lbs / 10.00kg shells, 200 per gun
Quick firing guns in deck mounts, 1909 Model
8 x Single mounts on sides, evenly spread
8 raised mounts
Weight of broadside 1,612 lbs / 731 kg

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.72" / 120 mm 342.52 ft / 104.40 m 12.30 ft / 3.75 m
Ends: Unarmoured
Main Belt covers 111 % of normal length

Note : The belt represents the thicker slopes of the protective deck, for 150mm total.

- Hull void:
0.00" / 0 mm 0.00 ft / 0.00 m 0.00 ft / 0.00 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.56" / 65 mm 2.56" / 65 mm 2.56" / 65 mm
2nd: 0.31" / 8 mm - -

- Protected deck - single deck:
For and Aft decks: 1.18" / 30 mm
Forecastle: 0.98" / 25 mm Quarter deck: 0.98" / 25 mm

- Conning towers: Forward 3.54" / 90 mm, Aft 0.00" / 0 mm

Machinery:
Coal and oil fired boilers, steam turbines,
Direct drive, 2 shafts, 37,868 shp / 28,250 Kw = 27.00 kts
Range 7,600nm at 10.00 kts
Bunker at max displacement = 1,366 tons (90% coal)

Complement:
383 - 498

Cost:
£0.616 million / $2.464 million

Distribution of weights at normal displacement:
Armament: 410 tons, 5.8 %
- Guns: 410 tons, 5.8 %
Armour: 1,386 tons, 19.7 %
- Belts: 810 tons, 11.5 %
- Armament: 189 tons, 2.7 %
- Armour Deck: 358 tons, 5.1 %
- Conning Tower: 28 tons, 0.4 %
Machinery: 1,875 tons, 26.7 %
Hull, fittings & equipment: 1,993 tons, 28.4 %
Fuel, ammunition & stores: 1,031 tons, 14.7 %
Miscellaneous weights: 328 tons, 4.7 %
- Hull void weights: 48 tons
- Hull above water: 160 tons
- On freeboard deck: 54 tons
- Above deck: 66 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
6,159 lbs / 2,794 Kg = 34.6 x 7.1 " / 180 mm shells or 1.1 torpedoes
Stability (Unstable if below 1.00): 1.15
Metacentric height 2.5 ft / 0.8 m
Roll period: 14.0 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.63
Seaboat quality (Average = 1.00): 1.20

Hull form characteristics:
Hull has rise forward of midbreak,
a ram bow and a cruiser stern
Block coefficient (normal/deep): 0.500 / 0.510
Length to Beam Ratio: 9.06 : 1
'Natural speed' for length: 21.81 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 9.84 ft / 3.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 15.00 %, 21.33 ft / 6.50 m, 20.51 ft / 6.25 m
- Forward deck: 40.00 %, 20.51 ft / 6.25 m, 20.51 ft / 6.25 m
- Aft deck: 32.00 %, 12.30 ft / 3.75 m, 12.30 ft / 3.75 m
- Quarter deck: 13.00 %, 12.30 ft / 3.75 m, 12.30 ft / 3.75 m
- Average freeboard: 16.86 ft / 5.14 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 108.3 %
- Above water (accommodation/working, high = better): 139.5 %
Waterplane Area: 16,638 Square feet or 1,546 Square metres
Displacement factor (Displacement / loading): 103 %
Structure weight / hull surface area: 82 lbs/sq ft or 400 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.85
- Longitudinal: 1.41
- Overall: 0.90
Caution: Hull subject to strain in open-sea
Adequate machinery, storage, compartmentation space
Excellent accommodation and workspace room
Good seaboat, rides out heavy weather easily

Intended as a Protected Cruiser for the fleet
The vessel is fitted with a protective deck, 90mm on the slopes and 25mm on the flat

41t - 1905 Fire Control
25t - Long Range Radio
30t - 0.5% increased ventilation
24t - Torpedoes 4 xT2 (8)
160t - minedeck on 2nd deck aft, 2 mine rails w/80 mines ea. drop through ports in stern
22t - construction reserve remaining

+6.25 Forecastle deck
+3.75 Weather Deck
+1.25 2nd deck, top of main belt, protective deck
-1.25 Bottom of main belt, 1st deck
-4.75 Engineering Deck
-5.26 : Bilges, double bottom
-6.0 : Keel

AnchorSteam · August 12, 2020, 09:31:59 PM

ONE of these, from Desertfox (what a difference 4 years makes!)
Pizza the Hutt class, Ethiopian Armored Cruiser laid down 1910

new name; The Exorcist

Displacement:
9,226 t light; 9,690 t standard; 10,350 t normal; 10,878 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(460.00 ft / 460.00 ft) x 70.00 ft x (22.50 / 23.36 ft)
(140.21 m / 140.21 m) x 21.34 m x (6.86 / 7.12 m)

Armament:
4 - 10.04" / 255 mm 45.0 cal guns - 510.24lbs / 231.44kg shells, 150 per gun
Breech loading guns in turret on barbette mounts, 1910 Model
2 x Twin mounts on centreline ends, evenly spread
4 - 7.09" / 180 mm 45.0 cal guns - 179.46lbs / 81.40kg shells, 150 per gun
Breech loading guns in turret on barbette mounts, 1910 Model
2 x Twin mounts on sides amidships
14 - 3.54" / 90.0 mm 45.0 cal guns - 22.43lbs / 10.18kg shells, 150 per gun
Quick firing guns in casemate mounts, 1910 Model
14 x Single mounts on sides, evenly spread
10 hull mounts in casemates- Limited use in all but light seas
Weight of broadside 3,073 lbs / 1,394 kg

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 10.0" / 254 mm 240.00 ft / 73.15 m 8.00 ft / 2.44 m
Ends: 4.00" / 102 mm 220.00 ft / 67.06 m 8.00 ft / 2.44 m
Upper: 4.00" / 102 mm 240.00 ft / 73.15 m 8.00 ft / 2.44 m
Main Belt covers 80 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 10.0" / 254 mm 7.00" / 178 mm 10.0" / 254 mm
2nd: 7.00" / 178 mm 3.00" / 76 mm 7.00" / 178 mm
3rd: 3.00" / 76 mm - -

- Protected deck - multiple decks:
For and Aft decks: 2.50" / 64 mm
Forecastle: 1.50" / 38 mm Quarter deck: 1.50" / 38 mm

- Conning towers: Forward 10.00" / 254 mm, Aft 4.00" / 102 mm

Machinery:
Coal and oil fired boilers, steam turbines,
Direct drive, 3 shafts, 37,372 shp / 27,879 Kw = 25.00 kts
Range 5,500nm at 10.00 kts
Bunker at max displacement = 1,189 tons (90% coal)

Complement:
512 - 666

Cost:
£0.832 million / $3.328 million

Distribution of weights at normal displacement:
Armament: 599 tons, 5.8 %
- Guns: 599 tons, 5.8 %
Armour: 3,267 tons, 31.6 %
- Belts: 1,482 tons, 14.3 %
- Armament: 748 tons, 7.2 %
- Armour Deck: 894 tons, 8.6 %
- Conning Towers: 143 tons, 1.4 %
Machinery: 1,682 tons, 16.3 %
Hull, fittings & equipment: 3,424 tons, 33.1 %
Fuel, ammunition & stores: 1,124 tons, 10.9 %
Miscellaneous weights: 255 tons, 2.5 %
- Hull below water: 30 tons
- On freeboard deck: 140 tons
- Above deck: 85 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
12,910 lbs / 5,856 Kg = 25.5 x 10.0 " / 255 mm shells or 2.2 torpedoes
Stability (Unstable if below 1.00): 1.08
Metacentric height 3.4 ft / 1.0 m
Roll period: 16.0 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.39
Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.500 / 0.506
Length to Beam Ratio: 6.57 : 1
'Natural speed' for length: 21.45 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 70
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 30.00 %, 18.00 ft / 5.49 m, 15.00 ft / 4.57 m
- Forward deck: 30.00 %, 15.00 ft / 4.57 m, 15.00 ft / 4.57 m
- Aft deck: 25.00 %, 15.00 ft / 4.57 m, 15.00 ft / 4.57 m
- Quarter deck: 15.00 %, 15.00 ft / 4.57 m, 15.00 ft / 4.57 m
- Average freeboard: 15.36 ft / 4.68 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 78.4 %
- Above water (accommodation/working, high = better): 119.7 %
Waterplane Area: 21,454 Square feet or 1,993 Square metres
Displacement factor (Displacement / loading): 109 %
Structure weight / hull surface area: 120 lbs/sq ft or 584 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.69
- Overall: 1.00
Excellent machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform

25t for Long-ranged wireless
60t for 1905 Fire Control
140t for spare
30t for 6 x 18" torpedo tubes plus reloads

AnchorSteam · August 13, 2020, 03:52:25 PM

TWO of these to fill out the 1901-1903 slots

The USN ends up with bigger ships because of it's decision in the 1900 design year to go with AXY designs, and it's better armor (especially end and upper). The stacked turrets are heavy, too, which inflates things even more. This one isn't as big, being based on the 1900 USS Salt Lake City design instead of the USS Pittsburgh design.

USS Bismarck, United States Armored Cruiser laid down 1902

Displacement:
15,783 t light; 16,446 t standard; 17,625 t normal; 18,569 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(555.00 ft / 555.00 ft) x 75.00 ft x (26.00 / 27.12 ft)
(169.16 m / 169.16 m) x 22.86 m x (7.92 / 8.26 m)

Armament:
6 - 10.00" / 254 mm 45.0 cal guns - 510.00lbs / 231.33kg shells, 100 per gun
Breech loading guns in turret on barbette mounts, 1902 Model
3 x Twin mounts on centreline ends, majority aft
12 - 6.00" / 152 mm 50.0 cal guns - 105.01lbs / 47.63kg shells, 150 per gun
Breech loading guns in casemate mounts, 1902 Model
12 x Single mounts on sides, evenly spread
4 raised mounts
12 - 3.00" / 76.2 mm 50.0 cal guns - 13.01lbs / 5.90kg shells, 400 per gun
Quick firing guns in deck mounts, 1902 Model
6 x Single mounts on sides, evenly spread
6 raised mounts
6 x Single mounts on centreline, evenly spread
6 double raised mounts
Weight of broadside 4,476 lbs / 2,030 kg

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 6.00" / 152 mm 488.40 ft / 148.86 m 13.00 ft / 3.96 m
Ends: 4.00" / 102 mm 66.58 ft / 20.29 m 8.00 ft / 2.44 m
Upper: 4.00" / 102 mm 300.00 ft / 91.44 m 8.00 ft / 2.44 m
Main Belt covers 135 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 6.00" / 152 mm 4.00" / 102 mm 6.00" / 152 mm
3rd: 4.00" / 102 mm - 4.00" / 102 mm

- Armoured deck - single deck:
For and Aft decks: 2.00" / 51 mm
Forecastle: 2.00" / 51 mm Quarter deck: 2.00" / 51 mm

- Conning towers: Forward 9.00" / 229 mm, Aft 6.00" / 152 mm

Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 4 shafts, 41,707 ihp / 31,113 Kw = 24.00 kts
Range 6,000nm at 10.00 kts
Bunker at max displacement = 2,123 tons (100% coal)

Complement:
764 - 994

Cost:
£1.802 million / $7.206 million

Distribution of weights at normal displacement:
Armament: 935 tons, 5.3 %
- Guns: 935 tons, 5.3 %
Armour: 3,885 tons, 22.0 %
- Belts: 2,032 tons, 11.5 %
- Armament: 528 tons, 3.0 %
- Armour Deck: 1,106 tons, 6.3 %
- Conning Towers: 219 tons, 1.2 %
Machinery: 6,319 tons, 35.9 %
Hull, fittings & equipment: 4,603 tons, 26.1 %
Fuel, ammunition & stores: 1,842 tons, 10.5 %
Miscellaneous weights: 41 tons, 0.2 %
- Hull above water: 16 tons
- Above deck: 25 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
9,773 lbs / 4,433 Kg = 19.5 x 10.0 " / 254 mm shells or 1.3 torpedoes
Stability (Unstable if below 1.00): 1.39
Metacentric height 5.8 ft / 1.8 m
Roll period: 13.1 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.29
Seaboat quality (Average = 1.00): 1.21

Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.570 / 0.576
Length to Beam Ratio: 7.40 : 1
'Natural speed' for length: 23.56 kts
Power going to wave formation at top speed: 49 %
Trim (Max stability = 0, Max steadiness = 100): 58
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 8.00 %, 19.00 ft / 5.79 m, 15.00 ft / 4.57 m
- Forward deck: 20.00 %, 15.00 ft / 4.57 m, 15.00 ft / 4.57 m
- Aft deck: 68.00 %, 15.00 ft / 4.57 m, 15.00 ft / 4.57 m
- Quarter deck: 4.00 %, 15.00 ft / 4.57 m, 15.00 ft / 4.57 m
- Average freeboard: 15.13 ft / 4.61 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 135.3 %
- Above water (accommodation/working, high = better): 110.7 %
Waterplane Area: 29,600 Square feet or 2,750 Square metres
Displacement factor (Displacement / loading): 88 %
Structure weight / hull surface area: 121 lbs/sq ft or 590 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.99
- Longitudinal: 1.18
- Overall: 1.01
Cramped machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

Above-water miscellaneous weight accounts for 4 above waterline broadside 18" 5m wet heater torpedo tubes and 12 reload torpedoes.

Above-decks miscellaneous weight allows for a long-range wireless installation.
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Heavy Cruisers

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