I can't make up my mind as to which of these designs to go with as a follow-on to the HEL class CA's, whether to go for an 8, 10 or 12 gun design.
I'm leaning towards D, but I would appreciate your thoughts please!
Valkyre C, Denmark CA laid down 1928
Displacement:
10,147 t light; 10,646 t standard; 11,703 t normal; 12,549 t full load
Dimensions: Length overall / water x beam x draught
658.86 ft / 640.00 ft x 62.00 ft x 20.00 ft (normal load)
200.82 m / 195.07 m x 18.90 m x 6.10 m
Armament:
8 - 8.27" / 210 mm guns (4x2 guns), 282.57lbs / 128.17kg shells, 1928 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
12 - 4.72" / 120 mm guns (6x2 guns), 52.72lbs / 23.91kg shells, 1928 Model
Breech loading guns in turrets (on barbettes)
on side, all amidships, 2 raised mounts - superfiring
16 - 2.24" / 57.0 mm guns (8x2 guns), 5.65lbs / 2.56kg shells, 1928 Model
Breech loading guns in deck mounts
on side, evenly spread, 4 raised mounts
24 - 0.79" / 20.0 mm guns (12x2 guns), 0.24lbs / 0.11kg shells, 1928 Model
Breech loading guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 2,989 lbs / 1,356 kg
Shells per gun, main battery: 150
8 - 23.6" / 600 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.92" / 125 mm 393.86 ft / 120.05 m 9.84 ft / 3.00 m
Ends: Unarmoured
Main Belt covers 95 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 4.92" / 125 mm 1.97" / 50 mm 3.94" / 100 mm
2nd: 1.97" / 50 mm 0.98" / 25 mm 1.97" / 50 mm
3rd: 0.59" / 15 mm - -
4th: 0.59" / 15 mm - -
- Armour deck: 1.97" / 50 mm, Conning tower: 3.94" / 100 mm
Machinery:
Oil fired boilers, steam turbines,
Electric motors, 2 shafts, 79,494 shp / 59,303 Kw = 32.00 kts
Range 12,000nm at 12.00 kts
Bunker at max displacement = 1,903 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
13,622 lbs / 6,179 Kg = 48.2 x 8.3 " / 210 mm shells or 1.7 torpedoes
Stability (Unstable if below 1.00): 1.01
Metacentric height 2.5 ft / 0.8 m
Roll period: 16.6 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.79
Seaboat quality (Average = 1.00): 1.00
Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.516
Length to Beam Ratio: 10.32 : 1
'Natural speed' for length: 28.75 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 70
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 5.00 ft / 1.52 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 %): 17.00 ft / 5.18 m
- Stern: 17.00 ft / 5.18 m
- Average freeboard: 18.16 ft / 5.53 m
Ship tends to be wet forward
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
-------------------------------------------------
Valkyre D, Denmark CA laid down 1928
Displacement:
12,390 t light; 12,989 t standard; 14,373 t normal; 15,480 t full load
Dimensions: Length overall / water x beam x draught
686.17 ft / 660.00 ft x 70.00 ft x 21.00 ft (normal load)
209.14 m / 201.17 m x 21.34 m x 6.40 m
Armament:
10 - 8.27" / 210 mm guns (4 mounts), 282.57lbs / 128.17kg shells, 1925 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
12 - 4.72" / 120 mm guns (6x2 guns), 52.72lbs / 23.91kg shells, 1925 Model
Breech loading guns in turrets (on barbettes)
on side, all amidships, 2 raised mounts - superfiring
16 - 2.24" / 57.0 mm guns (8x2 guns), 5.65lbs / 2.56kg shells, 1928 Model
Breech loading guns in deck mounts
on side, evenly spread
24 - 0.79" / 20.0 mm guns (12x2 guns), 0.24lbs / 0.11kg shells, 1928 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 3,555 lbs / 1,612 kg
Shells per gun, main battery: 150
8 - 23.6" / 600 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.92" / 125 mm 412.93 ft / 125.86 m 10.17 ft / 3.10 m
Ends: Unarmoured
Main Belt covers 96 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 4.92" / 125 mm 1.97" / 50 mm 3.94" / 100 mm
2nd: 1.97" / 50 mm 0.98" / 25 mm 1.97" / 50 mm
3rd: 0.59" / 15 mm - -
4th: 0.59" / 15 mm - -
- Armour deck: 1.97" / 50 mm, Conning tower: 3.94" / 100 mm
Machinery:
Oil fired boilers, steam turbines,
Electric motors, 2 shafts, 101,138 shp / 75,449 Kw = 33.00 kts
Range 14,000nm at 12.00 kts
Bunker at max displacement = 2,491 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
17,193 lbs / 7,799 Kg = 60.8 x 8.3 " / 210 mm shells or 1.9 torpedoes
Stability (Unstable if below 1.00): 1.04
Metacentric height 3.2 ft / 1.0 m
Roll period: 16.5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.64
Seaboat quality (Average = 1.00): 1.00
Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.519
Length to Beam Ratio: 9.43 : 1
'Natural speed' for length: 29.39 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 70
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 10.00 ft / 3.05 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 28.00 ft / 8.53 m
- Forecastle (20 %): 20.00 ft / 6.10 m
- Mid (50 %): 19.50 ft / 5.94 m
- Quarterdeck (15 %): 19.00 ft / 5.79 m
- Stern: 19.00 ft / 5.79 m
- Average freeboard: 20.15 ft / 6.14 m
Ship tends to be wet forward
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.15
- 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
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Valkyre B, Denmark CA laid down 1928
Displacement:
11,998 t light; 12,637 t standard; 13,999 t normal; 15,088 t full load
Dimensions: Length overall / water x beam x draught
685.01 ft / 660.00 ft x 70.00 ft x 21.00 ft (normal load)
208.79 m / 201.17 m x 21.34 m x 6.40 m
Armament:
12 - 8.27" / 210 mm guns (4x3 guns), 282.57lbs / 128.17kg shells, 1925 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
12 - 4.72" / 120 mm guns (6x2 guns), 52.72lbs / 23.91kg shells, 1925 Model
Breech loading guns in turrets (on barbettes)
on side, all amidships, 2 raised mounts - superfiring
16 - 2.24" / 57.0 mm guns (8x2 guns), 5.65lbs / 2.56kg shells, 1928 Model
Breech loading guns in deck mounts
on side, evenly spread
24 - 0.79" / 20.0 mm guns (12x2 guns), 0.24lbs / 0.11kg shells, 1928 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 4,120 lbs / 1,869 kg
Shells per gun, main battery: 150
8 - 23.6" / 600 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.92" / 125 mm 398.59 ft / 121.49 m 10.17 ft / 3.10 m
Ends: Unarmoured
Main Belt covers 93 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 4.92" / 125 mm 1.97" / 50 mm 3.94" / 100 mm
2nd: 1.97" / 50 mm 0.98" / 25 mm 1.97" / 50 mm
3rd: 0.59" / 15 mm - -
4th: 0.59" / 15 mm - -
- Armour deck: 1.97" / 50 mm, Conning tower: 3.94" / 100 mm
Machinery:
Oil fired boilers, steam turbines,
Electric motors, 2 shafts, 87,700 shp / 65,424 Kw = 32.00 kts
Range 14,000nm at 12.00 kts
Bunker at max displacement = 2,452 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
16,712 lbs / 7,580 Kg = 59.1 x 8.3 " / 210 mm shells or 2.0 torpedoes
Stability (Unstable if below 1.00): 1.04
Metacentric height 3.1 ft / 1.0 m
Roll period: 16.6 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.71
Seaboat quality (Average = 1.00): 1.00
Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.505
Length to Beam Ratio: 9.43 : 1
'Natural speed' for length: 29.44 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 70
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 10.00 ft / 3.05 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.00 ft / 7.92 m
- Forecastle (20 %): 19.00 ft / 5.79 m
- Mid (50 %): 18.00 ft / 5.49 m
- Quarterdeck (15 %): 17.00 ft / 5.18 m
- Stern: 17.00 ft / 5.18 m
- Average freeboard: 18.59 ft / 5.66 m
Ship tends to be wet forward
Hull strength (Relative):
- Cross-sectional: 0.99
- Longitudinal: 1.08
- 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