This idea has come from Big Rich, instead of two 30,000ton ships I have one 20,000 Scout Forces Flagship and 1 40,000 ton Fleet Flagship.
Below are two concepts for the cruiser, 16x8" vs 8x12". The scout forces currently have 8" and 12" cruisers. I see advantages going for either 8" or 12" but not a 9.2 or 10" as this would introduce a new calibre.
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Super-Cruiser, Greek cruiser laid down 1931
Displacement:
18,590 t light; 19,629 t standard; 21,371 t normal; 22,766 t full load
Dimensions: Length overall / water x beam x draught
708.00 ft / 680.00 ft x 80.00 ft x 25.00 ft (normal load)
215.80 m / 207.26 m x 24.38 m x 7.62 m
Armament:
8 - 12.00" / 305 mm guns (3 mounts), 864.00lbs / 391.90kg shells, 1931 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority aft
4 - 5.00" / 127 mm guns (2x2 guns), 62.50lbs / 28.35kg shells, 1931 Model
Dual purpose guns in turrets (on barbettes)
on side, all forward, all raised mounts - superfiring
8 - 5.00" / 127 mm guns (4x2 guns), 62.50lbs / 28.35kg shells, 1931 Model
Dual purpose guns in turrets (on barbettes)
on side, all aft, 2 raised mounts - superfiring
12 - 1.57" / 40.0 mm guns (6x2 guns), 1.95lbs / 0.88kg shells, 1931 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
24 - 0.49" / 12.5 mm guns (12x2 guns), 0.06lbs / 0.03kg shells, 1931 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 7,687 lbs / 3,487 kg
Shells per gun, main battery: 140
8 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 8.00" / 203 mm 390.00 ft / 118.87 m 10.00 ft / 3.05 m
Ends: Unarmoured
Main Belt covers 88 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 8.00" / 203 mm 4.00" / 102 mm 7.00" / 178 mm
2nd: 1.00" / 25 mm - 2.00" / 51 mm
3rd: 1.00" / 25 mm - -
- Armour deck: 4.20" / 107 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 95,683 shp / 71,379 Kw = 30.50 kts
Range 9,000nm at 15.00 kts (Bunkerage = 3,137 tons)
Complement:
883 - 1,148
Cost:
£8.109 million / $32.437 million
Distribution of weights at normal displacement:
Armament: 961 tons, 4.5 %
Armour: 5,657 tons, 26.5 %
- Belts: 1,352 tons, 6.3 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 1,234 tons, 5.8 %
- Armour Deck: 3,071 tons, 14.4 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 2,861 tons, 13.4 %
Hull, fittings & equipment: 8,911 tons, 41.7 %
Fuel, ammunition & stores: 2,781 tons, 13.0 %
Miscellaneous weights: 200 tons, 0.9 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
31,248 lbs / 14,174 Kg = 36.2 x 12.0 " / 305 mm shells or 2.9 torpedoes
Stability (Unstable if below 1.00): 1.07
Metacentric height 4.0 ft / 1.2 m
Roll period: 16.7 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.91
Seaboat quality (Average = 1.00): 1.21
Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.550
Length to Beam Ratio: 8.50 : 1
'Natural speed' for length: 29.97 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 59
Bow angle (Positive = bow angles forward): 45.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 28.00 ft / 8.53 m
- Forecastle (15 %): 27.00 ft / 8.23 m
- Mid (70 %): 25.00 ft / 7.62 m (16.00 ft / 4.88 m aft of break)
- Quarterdeck (15 %): 16.00 ft / 4.88 m
- Stern: 16.00 ft / 4.88 m
- Average freeboard: 23.22 ft / 7.08 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 79.5 %
- Above water (accommodation/working, high = better): 183.1 %
Waterplane Area: 39,525 Square feet or 3,672 Square metres
Displacement factor (Displacement / loading): 111 %
Structure weight / hull surface area: 154 lbs/sq ft or 750 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.52
- 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
Good seaboat, rides out heavy weather easily
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Super-Cruiser, Greek Cruiser laid down 1931
Displacement:
18,845 t light; 19,629 t standard; 21,371 t normal; 22,766 t full load
Dimensions: Length overall / water x beam x draught
708.00 ft / 680.00 ft x 80.00 ft x 25.00 ft (normal load)
215.80 m / 207.26 m x 24.38 m x 7.62 m
Armament:
16 - 8.00" / 203 mm guns (4x4 guns), 256.00lbs / 116.12kg shells, 1931 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
8 - 5.00" / 127 mm guns (4x2 guns), 62.50lbs / 28.35kg shells, 1931 Model
Dual purpose guns in turrets (on barbettes)
on side, all forward, 2 raised mounts - superfiring
8 - 5.00" / 127 mm guns (4x2 guns), 62.50lbs / 28.35kg shells, 1931 Model
Dual purpose guns in turrets (on barbettes)
on side, all aft, 2 raised mounts - superfiring
12 - 1.57" / 40.0 mm guns (6x2 guns), 1.95lbs / 0.88kg shells, 1931 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
24 - 0.49" / 12.5 mm guns (12x2 guns), 0.06lbs / 0.03kg shells, 1931 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 5,121 lbs / 2,323 kg
Shells per gun, main battery: 120
8 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 10.0" / 254 mm 390.00 ft / 118.87 m 10.00 ft / 3.05 m
Ends: Unarmoured
Main Belt covers 88 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 9.00" / 229 mm 4.50" / 114 mm 9.00" / 229 mm
2nd: 1.00" / 25 mm - 2.00" / 51 mm
3rd: 1.00" / 25 mm - -
- Armour deck: 5.00" / 127 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 95,683 shp / 71,379 Kw = 30.50 kts
Range 9,000nm at 15.00 kts (Bunkerage = 3,137 tons)
Complement:
883 - 1,148
Cost:
£6.972 million / $27.890 million
Distribution of weights at normal displacement:
Armament: 640 tons, 3.0 %
Armour: 6,786 tons, 31.8 %
- Belts: 1,690 tons, 7.9 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 1,440 tons, 6.7 %
- Armour Deck: 3,656 tons, 17.1 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 2,861 tons, 13.4 %
Hull, fittings & equipment: 8,258 tons, 38.6 %
Fuel, ammunition & stores: 2,526 tons, 11.8 %
Miscellaneous weights: 300 tons, 1.4 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
35,354 lbs / 16,036 Kg = 138.1 x 8.0 " / 203 mm shells or 3.5 torpedoes
Stability (Unstable if below 1.00): 1.04
Metacentric height 3.8 ft / 1.2 m
Roll period: 17.1 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.68
Seaboat quality (Average = 1.00): 1.21
Hull form characteristics:
Hull has rise forward of midbreak, raised quarterdeck
and transom stern
Block coefficient: 0.550
Length to Beam Ratio: 8.50 : 1
'Natural speed' for length: 29.97 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 58
Bow angle (Positive = bow angles forward): 45.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 28.00 ft / 8.53 m
- Forecastle (15 %): 27.00 ft / 8.23 m
- Mid (70 %): 24.00 ft / 7.32 m (15.00 ft / 4.57 m aft of break)
- Quarterdeck (15 %): 18.00 ft / 5.49 m (15.00 ft / 4.57 m before break)
- Stern: 18.00 ft / 5.49 m
- Average freeboard: 23.11 ft / 7.04 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 68.5 %
- Above water (accommodation/working, high = better): 178.4 %
Waterplane Area: 39,525 Square feet or 3,672 Square metres
Displacement factor (Displacement / loading): 119 %
Structure weight / hull surface area: 143 lbs/sq ft or 696 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.40
- 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
Good seaboat, rides out heavy weather easily
Cheers,