You are not logged in.

1

Monday, May 31st 2004, 1:11pm

edge design

can anybody improve this? max tonnage 31500 standard - that's cheated already ...

Santissima Trinidad, Iberia BB laid down 1927

Displacement:
29,625 t light; 31,501 t standard; 34,345 t normal; 36,483 t full load
Loading submergence 1,262 tons/feet

Dimensions:
672.57 ft x 88.58 ft x 31.53 ft (normal load)
205.00 m x 27.00 m x 9.61 m

Armament:
8 - 14.96" / 380 mm guns (3 Main turrets, 1 superfiring turret)
12 - 5.12" / 130 mm guns (6 2nd turrets x 2 guns)
12 - 2.24" / 57 mm AA guns
Weight of broadside 14,266 lbs / 6,471 kg

Armour:
Belt 14.17" / 360 mm, ends unarmoured
Belts cover 96 % of normal area
Main turrets 14.57" / 370 mm, 2nd turrets 1.18" / 30 mm
AA gun shields 1.18" / 30 mm
Armour deck 4.33" / 110 mm, Conning tower 13.78" / 350 mm
Torpedo bulkhead 1.18" / 30 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 110,476 shp / 82,415 Kw = 28.00 kts
Range 10,000nm at 15.00 kts

Complement:
1,261 - 1,639

Cost:
£10.993 million / $43.972 million

Distribution of weights at normal displacement:
Armament: 1,783 tons, 5.2 %
Armour: 11,423 tons, 33.3 %
Belts: 2,823 tons, 8.2 %, Armament: 4,143 tons, 12.1 %, Armour Deck: 3,540 tons, 10.3 %
Conning Tower: 315 tons, 0.9 %, Torpedo bulkhead: 602 tons, 1.8 %
Machinery: 3,487 tons, 10.2 %
Hull, fittings & equipment: 12,832 tons, 37.4 %
Fuel, ammunition & stores: 4,720 tons, 13.7 %
Miscellaneous weights: 100 tons, 0.3 %

Metacentric height 4.1

Remarks:
Hull space for machinery, storage & compartmentation is adequate
Room for accommodation & workspaces is excellent

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.00
Shellfire needed to sink: 32,727 lbs / 14,845 Kg = 19.5 x 15.0 " / 380 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 3.6
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 49 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.92
Relative quality as seaboat: 1.01

Hull form characteristics:
Block coefficient: 0.640
Sharpness coefficient: 0.41
Hull speed coefficient 'M': 6.33
'Natural speed' for length: 25.93 kts
Power going to wave formation at top speed: 55 %
Trim: 47
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 95.4 %
Relative accommodation and working space: 154.4 %
(Average = 100%)
Displacement factor: 105 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.96
(Structure weight / hull surface area: 192 lbs / square foot or 939 Kg / square metre)
Relative longitudinal hull strength: 1.51
(for 23.13 ft / 7.05 m average freeboard, freeboard adjustment 3.75 ft)
Relative composite hull strength: 1.00


2

Monday, May 31st 2004, 1:20pm

My attempt

At your request...
As you already have noticed, it is 166 tons over that limit.
Santissima Trinidad, Iberia Battleship laid down 1927

Displacement:
29,638 t light; 31,666 t standard; 34,949 t normal; 37,436 t full load
Loading submergence 1,302 tons/feet

Dimensions:
715.00 ft x 94.00 ft x 32.50 ft (normal load)
217.93 m x 28.65 m x 9.91 m

Armament:
9 - 14.96" / 380 mm guns (3 Main turrets x 3 guns, 1 superfiring turret)
12 - 5.12" / 130 mm guns (6 2nd turrets x 2 guns)
12 - 2.24" / 57 mm AA guns
Weight of broadside 15,940 lbs / 7,230 kg

Armour:
Belt 13.78" / 350 mm, ends unarmoured
Belts cover 97 % of normal area
Main turrets 13.78" / 350 mm, 2nd turrets 1.18" / 30 mm
AA gun shields 1.18" / 30 mm
Armour deck 4.33" / 110 mm, Conning tower 13.78" / 350 mm
Torpedo bulkhead 1.18" / 30 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 105,829 shp / 78,949 Kw = 28.00 kts
Range 11,500nm at 15.00 kts

Complement:
1,278 - 1,661

Cost:
£11.559 million / $46.237 million

Distribution of weights at normal displacement:
Armament: 1,993 tons, 5.7 %
Armour: 10,959 tons, 31.4 %
Belts: 3,037 tons, 8.7 %, Armament: 3,292 tons, 9.4 %, Armour Deck: 3,651 tons, 10.4 %
Conning Tower: 319 tons, 0.9 %, Torpedo bulkhead: 660 tons, 1.9 %
Machinery: 3,341 tons, 9.6 %
Hull, fittings & equipment: 13,246 tons, 37.9 %
Fuel, ammunition & stores: 5,311 tons, 15.2 %
Miscellaneous weights: 100 tons, 0.3 %

Metacentric height 5.1

Remarks:
Hull space for machinery, storage & compartmentation is adequate
Room for accommodation & workspaces is excellent

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.06
Shellfire needed to sink: 31,806 lbs / 14,427 Kg = 19.0 x 15.0 " / 380 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 4.1
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 50 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.66
Relative quality as seaboat: 1.00

Hull form characteristics:
Block coefficient: 0.560
Sharpness coefficient: 0.38
Hull speed coefficient 'M': 6.69
'Natural speed' for length: 26.74 kts
Power going to wave formation at top speed: 51 %
Trim: 50
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 96.3 %
Relative accommodation and working space: 128.7 %
(Average = 100%)
Displacement factor: 104 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.98
(Structure weight / hull surface area: 198 lbs / square foot or 967 Kg / square metre)
Relative longitudinal hull strength: 1.24
(for 18.95 ft / 5.78 m average freeboard, freeboard adjustment -0.50 ft)
Relative composite hull strength: 1.00

Walter

3

Monday, May 31st 2004, 1:27pm

Slightly different

How about this one. This one is actually under the 31,500 tons (thanks to the range) and using as many guns as your design:

Santissima Trinidad, Iberia Battleship laid down 1927

Displacement:
29,212 t light; 31,100 t standard; 34,949 t normal; 37,889 t full load
Loading submergence 1,302 tons/feet

Dimensions:
715.00 ft x 94.00 ft x 32.50 ft (normal load)
217.93 m x 28.65 m x 9.91 m

Armament:
8 - 14.96" / 380 mm guns (4 Main turrets x 2 guns, 2 superfiring turrets)
12 - 5.12" / 130 mm guns (6 2nd turrets x 2 guns)
12 - 2.24" / 57 mm AA guns
Weight of broadside 14,266 lbs / 6,471 kg

Armour:
Belt 13.78" / 350 mm, ends unarmoured
Belts cover 92 % of normal area
Main turrets 13.78" / 350 mm, 2nd turrets 1.18" / 30 mm
AA gun shields 1.18" / 30 mm
Armour deck 4.33" / 110 mm, Conning tower 13.78" / 350 mm
Torpedo bulkhead 1.18" / 30 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 105,829 shp / 78,949 Kw = 28.00 kts
Range 13,500nm at 15.00 kts

Complement:
1,278 - 1,661

Cost:
£10.866 million / $43.462 million

Distribution of weights at normal displacement:
Armament: 1,783 tons, 5.1 %
Armour: 11,196 tons, 32.0 %
Belts: 2,895 tons, 8.3 %, Armament: 3,670 tons, 10.5 %, Armour Deck: 3,651 tons, 10.4 %
Conning Tower: 319 tons, 0.9 %, Torpedo bulkhead: 660 tons, 1.9 %
Machinery: 3,341 tons, 9.6 %
Hull, fittings & equipment: 12,792 tons, 36.6 %
Fuel, ammunition & stores: 5,737 tons, 16.4 %
Miscellaneous weights: 100 tons, 0.3 %

Metacentric height 4.8

Remarks:
Hull space for machinery, storage & compartmentation is adequate
Room for accommodation & workspaces is excellent

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.03
Shellfire needed to sink: 33,400 lbs / 15,150 Kg = 19.9 x 15.0 " / 380 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 4.5
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 50 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.62
Relative quality as seaboat: 1.00

Hull form characteristics:
Block coefficient: 0.560
Sharpness coefficient: 0.38
Hull speed coefficient 'M': 6.69
'Natural speed' for length: 26.74 kts
Power going to wave formation at top speed: 51 %
Trim: 50
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 90.6 %
Relative accommodation and working space: 130.4 %
(Average = 100%)
Displacement factor: 108 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.98
(Structure weight / hull surface area: 191 lbs / square foot or 932 Kg / square metre)
Relative longitudinal hull strength: 1.19
(for 19.20 ft / 5.85 m average freeboard, freeboard adjustment -0.25 ft)
Relative composite hull strength: 1.00

Walter

HoOmAn

Keeper of the Sacred Block Coefficient

  • Send private message

4

Monday, May 31st 2004, 4:51pm

Hmmm....

With a draught of nearly 10m wouldn´t you get proplems with some harbors?

Just curious...

5

Monday, May 31st 2004, 5:04pm

It depends on which harbours, the US was limited to ~32ft deep as a practical limit. There wasn't really a limit for the UK. For Italy, the Vittorio's had a draught of 34ft+.

It just depends on which country you are.

6

Monday, May 31st 2004, 5:12pm

I don't see Cadiz, Cartagena, Barreiro, Macao, Panama and Santiago having any kind of depth issue. Maybe I am wrong, I admit to not having researched it.

7

Tuesday, June 1st 2004, 5:32am

What about harbours of conquored nations?

8

Tuesday, June 1st 2004, 11:52am

you mean like Maracaibo Bay? *ducks and runs* or the Solent?

9

Tuesday, June 1st 2004, 12:15pm

I don't think you'll have any problems with depth in the Solent if you can sail QM2 up there.

10

Tuesday, June 1st 2004, 3:46pm

Quoted

I don't think you'll have any problems with depth in the Solent if you can sail QM2 up there.

Well, perhaps these days that is possible, but would it also have been possible 80 years ago?

Walter

11

Tuesday, June 1st 2004, 8:12pm

"you mean like Maracaibo Bay? *ducks and runs* or the Solent?"

Acctully more like the straights leading to Lago de Maracaibo, If you get past there you deserve to get access to the bay!