You are not logged in.

1

Saturday, July 22nd 2006, 6:18pm

HMS Hood-Attempted accurate Sim

Got bored today and have spent a while on the Hood Association Website, and have come up with this sim for HMS Hood using the info avaliable there.

HMS Hood, Great Britain Battlecruiser laid down 1916 (Engine 1918)

Displacement:
41,126 t light; 43,458 t standard; 46,473 t normal; 48,884 t full load

Dimensions: Length overall / water x beam x draught
854.91 ft / 850.41 ft x 95.00 ft (Bulges 104.20 ft) x 31.92 ft (normal load)
260.58 m / 259.21 m x 28.96 m (Bulges 31.76 m) x 9.73 m

Armament:
8 - 15.00" / 381 mm guns (4x2 guns), 1,920.00lbs / 870.90kg shells, 1916 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
12 - 5.50" / 140 mm guns in single mounts, 82.01lbs / 37.20kg shells, 1916 Model
Breech loading guns in deck mounts
on side, all amidships, all raised mounts - superfiring
8 - 4.00" / 102 mm guns in single mounts, 31.40lbs / 14.24kg shells, 1916 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 16,595 lbs / 7,528 kg
Shells per gun, main battery: 150
4 - 21.0" / 533.4 mm above water torpedoes, 2 - 21.0" / 533.4 mm submerged torpedo tubes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 12.0" / 305 mm 522.00 ft / 159.11 m 9.50 ft / 2.90 m
Ends: 6.00" / 152 mm 160.00 ft / 48.77 m 9.50 ft / 2.90 m
168.41 ft / 51.33 m Unarmoured ends
Upper: 7.00" / 178 mm 550.00 ft / 167.64 m 12.00 ft / 3.66 m
Main Belt covers 94 % of normal length

- Torpedo Bulkhead and Bulges:
4.50" / 114 mm 500.00 ft / 152.40 m 28.00 ft / 8.53 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 15.0" / 381 mm 11.0" / 279 mm 12.0" / 305 mm
2nd: 3.00" / 76 mm 1.00" / 25 mm -

- Armour deck: 3.50" / 89 mm, Conning tower: 11.00" / 279 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 144,000 shp / 107,424 Kw = 29.39 kts
Range 5,000nm at 18.00 kts
Bunker at max displacement = 5,426 tons

Complement:
1,582 - 2,057

Cost:
£6.081 million / $24.322 million

Distribution of weights at normal displacement:
Armament: 1,844 tons, 4.0 %
Armour: 14,394 tons, 31.0 %
- Belts: 4,823 tons, 10.4 %
- Torpedo bulkhead: 2,331 tons, 5.0 %
- Armament: 3,196 tons, 6.9 %
- Armour Deck: 3,738 tons, 8.0 %
- Conning Tower: 306 tons, 0.7 %
Machinery: 5,195 tons, 11.2 %
Hull, fittings & equipment: 19,293 tons, 41.5 %
Fuel, ammunition & stores: 5,347 tons, 11.5 %
Miscellaneous weights: 400 tons, 0.9 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
62,424 lbs / 28,315 Kg = 37.0 x 15.0 " / 381 mm shells or 10.6 torpedoes
Stability (Unstable if below 1.00): 1.16
Metacentric height 6.1 ft / 1.9 m
Roll period: 17.7 seconds
Steadiness - As gun platform (Average = 50 %): 54 %
- Recoil effect (Restricted arc if above 1.00): 0.54
Seaboat quality (Average = 1.00): 1.08

Hull form characteristics:
Hull has low quarterdeck
Block coefficient: 0.575
Length to Beam Ratio: 8.16 : 1
'Natural speed' for length: 29.16 kts
Power going to wave formation at top speed: 48 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 25.50 ft / 7.77 m
- Forecastle (15 %): 25.50 ft / 7.77 m
- Mid (60 %): 18.00 ft / 5.49 m
- Quarterdeck (25 %): 15.00 ft / 4.57 m (18.00 ft / 5.49 m before break)
- Stern: 15.00 ft / 4.57 m
- Average freeboard: 20.06 ft / 6.12 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 88.2 %
- Above water (accommodation/working, high = better): 139.7 %
Waterplane Area: 57,723 Square feet or 5,363 Square metres
Displacement factor (Displacement / loading): 116 %
Structure weight / hull surface area: 229 lbs/sq ft or 1,117 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.19
- Longitudinal: 1.05
- Overall: 1.08
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

Any thoughts?


2

Saturday, July 22nd 2006, 7:22pm

Definately over treaty specifications.

Nice work.

3

Sunday, July 23rd 2006, 8:43am

Quoted

4 shafts, 144,000 shp / 107,424 Kw = 29.39 kts


Is this what the Hood website states as her acctual speed? Most sources clock her at 31 knots.

Quoted

43,458 t standard


Preaty damn close to Whitleys stats (43, 352). Conways (42 670 Normal) and Warship pictorial seems to be off a fair ways (42,700 standard).

4

Sunday, July 23rd 2006, 10:09am

Quoted



Zitat:4 shafts, 144,000 shp / 107,424 Kw = 29.39 kts



Is this what the Hood website states as her acctual speed? Most sources clock her at 31 knots


Yes, but her stated normal maximum horsepower is 144,000hp and as RA has already proved that springsharp overestimates the horsepower required to acheive the same speed as the original ship.

5

Sunday, July 23rd 2006, 9:24pm

My own sim from some time ago uses similar data but i'm going off weights and using averages for end and upper belt armours. Actually 5"-6"-7" portions. SS underestimates speed for British hulls - obviously doesn't include Froude's work with the RN in cleaning up hull forms. Massively powerful ship with masses of room for growth.

HMS Hood, British Battlecruiser laid down 1916

Displacement:
41,126 t light; 42,957 t standard; 45,242 t normal; 47,070 t full load

Dimensions: Length overall / water x beam x draught
854.98 ft / 850.40 ft x 95.00 ft (Bulges 104.10 ft) x 31.00 ft (normal load)
260.60 m / 259.20 m x 28.96 m (Bulges 31.73 m) x 9.45 m

Armament:
8 - 15.00" / 381 mm guns (4x2 guns), 1,920.00lbs / 870.90kg shells, 1916 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
12 - 5.50" / 140 mm guns in single mounts, 82.00lbs / 37.19kg shells, 1916 Model
Breech loading guns in deck mounts
on side, all forward
4 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1916 Model
Breech loading guns in deck mounts
on side, all aft
Weight of broadside 16,472 lbs / 7,472 kg
Shells per gun, main battery: 100
2 - 21.0" / 533 mm above water torpedoes, 4 - 21.0" / 533 mm submerged torpedo tubes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 12.0" / 305 mm 562.00 ft / 171.30 m 9.50 ft / 2.90 m
Ends: 5.50" / 140 mm 100.00 ft / 30.48 m 9.50 ft / 2.90 m
188.40 ft / 57.42 m Unarmoured ends
Upper: 5.88" / 149 mm 540.00 ft / 164.59 m 17.00 ft / 5.18 m
Main Belt covers 102 % of normal length

- Torpedo Bulkhead and Bulges:
1.50" / 38 mm 562.00 ft / 171.30 m 28.00 ft / 8.53 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 15.0" / 381 mm 9.00" / 229 mm 12.0" / 305 mm

- Armour deck: 4.00" / 102 mm, Conning tower: 11.00" / 279 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 144,000 shp / 107,424 Kw = 29.50 kts
Range 8,500nm at 12.00 kts
Bunker at max displacement = 4,113 tons

Complement:
1,550 - 2,016

Cost:
£6.098 million / $24.390 million

Distribution of weights at normal displacement:
Armament: 1,828 tons, 4.0 %
Armour: 13,519 tons, 29.9 %
- Belts: 5,173 tons, 11.4 %
- Torpedo bulkhead: 873 tons, 1.9 %
- Armament: 2,893 tons, 6.4 %
- Armour Deck: 4,279 tons, 9.5 %
- Conning Tower: 301 tons, 0.7 %
Machinery: 5,365 tons, 11.9 %
Hull, fittings & equipment: 20,413 tons, 45.1 %
Fuel, ammunition & stores: 4,116 tons, 9.1 %
Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
61,443 lbs / 27,870 Kg = 36.4 x 15.0 " / 381 mm shells or 8.8 torpedoes
Stability (Unstable if below 1.00): 1.14
Metacentric height 5.9 ft / 1.8 m
Roll period: 18.0 seconds
Steadiness - As gun platform (Average = 50 %): 59 %
- Recoil effect (Restricted arc if above 1.00): 0.60
Seaboat quality (Average = 1.00): 1.17

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.577
Length to Beam Ratio: 8.17 : 1
'Natural speed' for length: 29.16 kts
Power going to wave formation at top speed: 48 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: -1.00 ft / -0.30 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.00 ft / 7.92 m
- Forecastle (20 %): 24.00 ft / 7.32 m
- Mid (70 %): 24.00 ft / 7.32 m (16.00 ft / 4.88 m aft of break)
- Quarterdeck (15 %): 16.00 ft / 4.88 m
- Stern: 19.00 ft / 5.79 m
- Average freeboard: 21.99 ft / 6.70 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 90.0 %
- Above water (accommodation/working, high = better): 154.8 %
Waterplane Area: 57,828 Square feet or 5,372 Square metres
Displacement factor (Displacement / loading): 116 %
Structure weight / hull surface area: 239 lbs/sq ft or 1,168 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.23
- Longitudinal: 1.19
- Overall: 1.20
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

6

Sunday, July 23rd 2006, 9:53pm

That makes more sense, I knew you'd done a sim of hood, but couldn't find it.

7

Sunday, July 23rd 2006, 11:58pm

No armour on the secondaries?

8

Monday, July 24th 2006, 10:53am

Was there any?

I think the shields were possibly 0.5" or maybe 1", not much more than this anyway. It doesn't greatly affect the sim.

9

Tuesday, July 25th 2006, 1:07pm

HMS Revenge - recoil is a bit of a problem but the sim works out fairly well.

HMS Revenge, Royal Navy Battleship laid down 1913

Displacement:
26,512 t light; 27,862 t standard; 29,525 t normal; 30,855 t full load

Dimensions: Length overall / water x beam x draught
620.50 ft / 620.50 ft x 88.50 ft x 30.90 ft (normal load)
189.13 m / 189.13 m x 26.97 m x 9.42 m

Armament:
8 - 15.00" / 381 mm guns (4x2 guns), 1,920.00lbs / 870.90kg shells, 1913 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
14 - 6.00" / 152 mm guns in single mounts, 105.00lbs / 47.63kg shells, 1913 Model
Breech loading guns in casemate mounts
on side, all forward
14 guns in hull casemates - Limited use in heavy seas
2 - 3.00" / 76.2 mm guns in single mounts, 12.00lbs / 5.44kg shells, 1913 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 16,854 lbs / 7,645 kg
Shells per gun, main battery: 80
4 - 21.0" / 533.4 mm submerged torpedo tubes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.0" / 330 mm 380.00 ft / 115.82 m 12.75 ft / 3.89 m
Ends: 5.00" / 127 mm 160.00 ft / 48.77 m 9.50 ft / 2.90 m
80.50 ft / 24.54 m Unarmoured ends
Upper: 6.00" / 152 mm 380.00 ft / 115.82 m 8.00 ft / 2.44 m
Main Belt covers 94 % of normal length

- Torpedo Bulkhead:
2.00" / 51 mm 380.00 ft / 115.82 m 27.00 ft / 8.23 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 13.0" / 330 mm 9.00" / 229 mm 10.0" / 254 mm
2nd: 6.00" / 152 mm - -

- Armour deck: 3.00" / 76 mm, Conning tower: 11.00" / 279 mm

Machinery:
Oil fired boilers, steam turbines,
Direct drive, 4 shafts, 40,000 shp / 29,840 Kw = 21.96 kts
Range 4,500nm at 15.00 kts
Bunker at max displacement = 2,993 tons

Complement:
1,126 - 1,464

Cost:
£2.974 million / $11.897 million

Distribution of weights at normal displacement:
Armament: 1,880 tons, 6.4 %
Armour: 10,021 tons, 33.9 %
- Belts: 3,847 tons, 13.0 %
- Torpedo bulkhead: 759 tons, 2.6 %
- Armament: 2,940 tons, 10.0 %
- Armour Deck: 2,248 tons, 7.6 %
- Conning Tower: 226 tons, 0.8 %
Machinery: 1,567 tons, 5.3 %
Hull, fittings & equipment: 13,044 tons, 44.2 %
Fuel, ammunition & stores: 3,014 tons, 10.2 %
Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
45,354 lbs / 20,572 Kg = 26.9 x 15.0 " / 381 mm shells or 6.8 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 5.6 ft / 1.7 m
Roll period: 15.8 seconds
Steadiness - As gun platform (Average = 50 %): 32 %
- Recoil effect (Restricted arc if above 1.00): 0.94
Seaboat quality (Average = 1.00): 1.03

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.609
Length to Beam Ratio: 7.01 : 1
'Natural speed' for length: 24.91 kts
Power going to wave formation at top speed: 44 %
Trim (Max stability = 0, Max steadiness = 100): 20
Bow angle (Positive = bow angles forward): -10.00 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 (21 %): 28.00 ft / 8.53 m
- Mid (67 %): 24.00 ft / 7.32 m (16.00 ft / 4.88 m aft of break)
- Quarterdeck (16 %): 16.00 ft / 4.88 m
- Stern: 16.00 ft / 4.88 m
- Average freeboard: 23.09 ft / 7.04 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 86.8 %
- Above water (accommodation/working, high = better): 159.1 %
Waterplane Area: 40,502 Square feet or 3,763 Square metres
Displacement factor (Displacement / loading): 105 %
Structure weight / hull surface area: 216 lbs/sq ft or 1,055 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.04
- Longitudinal: 2.10
- Overall: 1.12
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

HMS Indefatigable, British Battlecruiser laid down 1908 (Engine 1905)

Displacement:
17,482 t light; 18,200 t standard; 18,758 t normal; 19,205 t full load

Dimensions: Length overall / water x beam x draught
555.00 ft / 555.00 ft x 80.00 ft x 26.50 ft (normal load)
169.16 m / 169.16 m x 24.38 m x 8.08 m

Armament:
4 - 12.00" / 305 mm guns (2x2 guns), 850.00lbs / 385.55kg shells, 1904 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
4 - 12.00" / 305 mm guns (2x2 guns), 850.00lbs / 385.55kg shells, 1904 Model
Breech loading guns in turrets (on barbettes)
on side, all forward
16 - 4.00" / 102 mm guns in single mounts, 31.00lbs / 14.06kg shells, 1904 Model
Breech loading guns in deck mounts
on side, all amidships
Weight of broadside 7,296 lbs / 3,309 kg
Shells per gun, main battery: 80
3 - 17.7" / 450 mm submerged torpedo tubes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 6.00" / 152 mm 400.00 ft / 121.92 m 11.00 ft / 3.35 m
Ends: Unarmoured
Main Belt covers 111 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 7.00" / 178 mm 6.00" / 152 mm 7.00" / 178 mm
2nd: 7.00" / 178 mm 6.00" / 152 mm 7.00" / 178 mm

- Armour deck: 2.00" / 51 mm, Conning tower: 10.00" / 254 mm

Machinery:
Coal and oil fired boilers, steam turbines,
Direct drive, 4 shafts, 43,016 shp / 32,090 Kw = 23.93 kts
Range 2,300nm at 10.00 kts
Bunker at max displacement = 1,005 tons (75% coal)

Complement:
800 - 1,041

Cost:
£1.881 million / $7.524 million

Distribution of weights at normal displacement:
Armament: 928 tons, 4.9 %
Armour: 3,854 tons, 20.5 %
- Belts: 1,117 tons, 6.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 1,429 tons, 7.6 %
- Armour Deck: 1,155 tons, 6.2 %
- Conning Tower: 152 tons, 0.8 %
Machinery: 3,497 tons, 18.6 %
Hull, fittings & equipment: 9,104 tons, 48.5 %
Fuel, ammunition & stores: 1,276 tons, 6.8 %
Miscellaneous weights: 100 tons, 0.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
22,253 lbs / 10,094 Kg = 25.8 x 12.0 " / 305 mm shells or 2.1 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 4.3 ft / 1.3 m
Roll period: 16.3 seconds
Steadiness - As gun platform (Average = 50 %): 76 %
- Recoil effect (Restricted arc if above 1.00): 0.99
Seaboat quality (Average = 1.00): 1.86

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.558
Length to Beam Ratio: 6.94 : 1
'Natural speed' for length: 23.56 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 41
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: 32.00 ft / 9.75 m
- Forecastle (30 %): 29.00 ft / 8.84 m
- Mid (70 %): 29.00 ft / 8.84 m (21.00 ft / 6.40 m aft of break)
- Quarterdeck (15 %): 21.00 ft / 6.40 m
- Stern: 22.00 ft / 6.71 m
- Average freeboard: 27.04 ft / 8.24 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 100.2 %
- Above water (accommodation/working, high = better): 199.3 %
Waterplane Area: 31,220 Square feet or 2,900 Square metres
Displacement factor (Displacement / loading): 102 %
Structure weight / hull surface area: 183 lbs/sq ft or 894 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.03
- Longitudinal: 3.13
- Overall: 1.16
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
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

HMS Incomparable, British Battlecruiser laid down 1916 (Engine 1925)

Displacement:
43,331 t light; 45,469 t standard; 49,513 t normal; 52,748 t full load

Dimensions: Length overall / water x beam x draught
1,005.47 ft / 1,000.00 ft x 95.00 ft (Bulges 104.10 ft) x 31.00 ft (normal load)
306.47 m / 304.80 m x 28.96 m (Bulges 31.73 m) x 9.45 m

Armament:
6 - 18.00" / 457 mm guns (3x2 guns), 3,320.00lbs / 1,505.93kg shells, 1916 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
15 - 4.00" / 102 mm guns (5x3 guns), 31.00lbs / 14.06kg shells, 1916 Model
Breech loading guns in deck mounts
on side, all forward, 4 raised mounts - superfiring
4 - 4.00" / 102 mm guns in single mounts, 31.00lbs / 14.06kg shells, 1916 Model
Anti-aircraft guns in deck mounts
on side, all forward
Weight of broadside 20,509 lbs / 9,303 kg
Shells per gun, main battery: 100

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 16.0" / 406 mm 610.00 ft / 185.93 m 12.70 ft / 3.87 m
Ends: Unarmoured
Main Belt covers 94 % of normal length

- Torpedo Bulkhead and Bulges:
1.50" / 38 mm 610.00 ft / 185.93 m 28.00 ft / 8.53 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 14.0" / 356 mm 9.00" / 229 mm 12.0" / 305 mm

- Armour deck: 3.00" / 76 mm, Conning tower: 10.00" / 254 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 180,000 shp / 134,280 Kw = 31.43 kts
Range 25,000nm at 10.00 kts
Bunker at max displacement = 7,279 tons

Complement:
1,659 - 2,157

Cost:
£6.931 million / $27.725 million

Distribution of weights at normal displacement:
Armament: 2,263 tons, 4.6 %
Armour: 13,008 tons, 26.3 %
- Belts: 5,191 tons, 10.5 %
- Torpedo bulkhead: 948 tons, 1.9 %
- Armament: 2,943 tons, 5.9 %
- Armour Deck: 3,635 tons, 7.3 %
- Conning Tower: 290 tons, 0.6 %
Machinery: 5,844 tons, 11.8 %
Hull, fittings & equipment: 22,216 tons, 44.9 %
Fuel, ammunition & stores: 6,182 tons, 12.5 %
Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
70,479 lbs / 31,969 Kg = 24.2 x 18.0 " / 457 mm shells or 9.2 torpedoes
Stability (Unstable if below 1.00): 1.16
Metacentric height 6.1 ft / 1.9 m
Roll period: 17.7 seconds
Steadiness - As gun platform (Average = 50 %): 67 %
- Recoil effect (Restricted arc if above 1.00): 0.84
Seaboat quality (Average = 1.00): 1.34

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.537
Length to Beam Ratio: 9.61 : 1
'Natural speed' for length: 31.62 kts
Power going to wave formation at top speed: 43 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: -1.00 ft / -0.30 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 31.00 ft / 9.45 m
- Forecastle (20 %): 27.00 ft / 8.23 m
- Mid (70 %): 27.00 ft / 8.23 m (19.00 ft / 5.79 m aft of break)
- Quarterdeck (15 %): 19.00 ft / 5.79 m
- Stern: 22.00 ft / 6.71 m
- Average freeboard: 25.15 ft / 7.66 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 93.0 %
- Above water (accommodation/working, high = better): 189.2 %
Waterplane Area: 65,498 Square feet or 6,085 Square metres
Displacement factor (Displacement / loading): 116 %
Structure weight / hull surface area: 222 lbs/sq ft or 1,083 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.05
- Longitudinal: 0.98
- 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

Just impossible to fit the 20" guns, but she was more likely to be fitted with 18"/45 anyway. Speed is off by 2-3knts.