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1

Sunday, October 3rd 2004, 12:58pm

First try with Springsharp 2

It's an Admiral Nakhimov class light cruiser, four of which are still under construction. How does she look?

Admiral Nakhimov class, Russian Light Cruisers laid down 1924

Displacement:
7,391 t light; 7,814 t standard; 9,280 t normal; 10,416 t full load

Dimensions: Length overall / water x beam x draught
601.31 ft / 597.11 ft x 55.12 ft x 21.00 ft (normal load)
183.28 m / 182.00 m x 16.80 m x 6.40 m

Armament:
12 - 5.91" / 150 mm guns in triple mounts, 125.66lbs / 57.00kg shells, 1924 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
12 - 3.94" / 100 mm guns in dual mounts, 37.48lbs / 17.00kg shells, 1924 Model
Dual purpose guns in turrets (on barbettes)
on side, evenly spread
24 - 1.46" / 37.0 mm guns in triple mounts, 1.54lbs / 0.70kg shells, 1924 Model
Dual purpose guns in deck mounts with hoists
on side, evenly spread
Weight of broadside 1,995 lbs / 905 kg
Shells per gun, main battery: 200
12 - 20.9" / 530 mm above water torpedoesArmament:
12 - 5.91" / 150 mm guns in triple mounts, 125.66lbs / 57.00kg shells, 1924 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
12 - 3.94" / 100 mm guns in dual mounts, 37.48lbs / 17.00kg shells, 1924 Model
Dual purpose guns in turrets (on barbettes)
on side, evenly spread
24 - 1.46" / 37.0 mm guns in triple mounts, 1.54lbs / 0.70kg shells, 1924 Model
Dual purpose guns in deck mounts with hoists
on side, evenly spread
Weight of broadside 1,995 lbs / 905 kg
Shells per gun, main battery: 200
12 - 20.9" / 530 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2.95" / 75 mm 437.17 ft / 133.25 m 9.84 ft / 3.00 m
Ends: Unarmoured
Main Belt covers 113 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.95" / 75 mm 0.98" / 25 mm 0.98" / 25 mm
2nd: 0.98" / 25 mm 0.98" / 25 mm 0.98" / 25 mm
3rd: 0.98" / 25 mm - 0.98" / 25 mm

- Armour deck: 0.98" / 25 mm, Conning tower: 2.95" / 75 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 78,485 shp / 58,550 Kw = 32.00 kts
Range 11,300nm at 15.00 kts (Bunkerage = 2,639 tons)

Aviation:
2 Seaplanes, 1 Catapult

Complement:
472 - 614

Cost:
£2.450 million / $9.801 million

Distribution of weights at normal displacement:
Armament: 205 tons, 2.2 %
Armour: 1,092 tons, 11.8 %
- Belts: 516 tons, 5.6 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 176 tons, 1.9 %
- Armour Deck: 372 tons, 4.0 %
- Conning Tower: 28 tons, 0.3 %
Machinery: 2,585 tons, 27.9 %
Hull, fittings & equipment: 3,459 tons, 37.3 %
Fuel, ammunition & stores: 1,889 tons, 20.4 %
Miscellaneous weights: 50 tons, 0.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
8,542 lbs / 3,875 Kg = 83.0 x 5.9 " / 150 mm shells or 1.2 torpedoes
Stability (Unstable if below 1.00): 1.25
Metacentric height 3.1 ft / 0.9 m
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.51
Seaboat quality (Average = 1.00): 1.20

Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.470
Sharpness coefficient: 0.31
'Natural speed' for length: 24.44 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 58
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern angle (Positive = stern overhangs aft): 0.00 degrees
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 23.79 ft / 7.25 m
- Forecastle (20 %): 23.79 ft / 7.25 m (17.39 ft / 5.30 m aft of break)
- Mid (50 %): 17.39 ft / 5.30 m
- Quarterdeck (15 %): 17.39 ft / 5.30 m
- Stern: 17.39 ft / 5.30 m
- Average freeboard: 18.67 ft / 5.69 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 112.6 %
- Above water (accommodation/working, high = better): 107.7 %
Waterplane Area: 20,413 Square feet or 1,896 Square metres
Displacement factor (Displacement / loading): 117 %
Structure weight / hull surface area: 97 lbs/sq ft or 474 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.32
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

2

Sunday, October 3rd 2004, 1:28pm

I would say not bad, but the armament data is a bit mixed up.

HoOmAn

Keeper of the Sacred Block Coefficient

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3

Sunday, October 3rd 2004, 2:04pm

You´re still using SSv2.0 which is not bug free. Try to get SSv2.01. It´s much better.

Is it necessary to have a l:b ratio in excess of 10:1?

4

Sunday, October 3rd 2004, 3:18pm

Okay, got the new Springsharp

And Russian 8,000 ton cruisers have exceeded a 10:1 L:B ratio since the historical Admiral Lazarev class of 1913.

http://hera.mni.fh-giessen.de/~hg6339/data/index.html

She's also within the Gentleman's Agreement.

Admiral Nakhimov class, Russian Light Cruisers laid down 1924

Displacement:
7,436 t light; 7,860 t standard; 9,331 t normal; 10,508 t full load

Dimensions: Length overall / water x beam x draught
604.53 ft / 600.39 ft x 55.12 ft x 21.00 ft (normal load)
184.26 m / 183.00 m x 16.80 m x 6.40 m

Armament:
12 - 5.91" / 150 mm guns (4x3), 125.66lbs / 57.00kg shells, 1924 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
12 - 3.94" / 100 mm guns (6x2), 37.48lbs / 17.00kg shells, 1924 Model
Dual purpose guns in turrets (on barbettes)
on side, evenly spread
24 - 1.46" / 37.0 mm guns (8x3), 1.54lbs / 0.70kg shells, 1924 Model
Dual purpose guns in deck mounts
on side, evenly spread
Weight of broadside 1,995 lbs / 905 kg
Shells per gun, main battery: 200
12 - 20.9" / 530 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2.95" / 75 mm 424.38 ft / 129.35 m 9.51 ft / 2.90 m
Ends: Unarmoured
Main Belt covers 109 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.95" / 75 mm 0.98" / 25 mm 0.98" / 25 mm
2nd: 0.98" / 25 mm 0.98" / 25 mm 0.98" / 25 mm
3rd: 0.98" / 25 mm - 0.98" / 25 mm

- Armour deck: 0.98" / 25 mm, Conning tower: 2.95" / 75 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 78,435 shp / 58,513 Kw = 32.00 kts
Range 11,300nm at 15.00 kts (Bunkerage = 2,648 tons)

Aviation:
2 Seaplanes, 1 Catapult

Complement:
474 - 617

Cost:
£2.454 million / $9.817 million

Distribution of weights at normal displacement:
Armament: 205 tons, 2.2 %
Armour: 1,081 tons, 11.6 %
- Belts: 486 tons, 5.2 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 176 tons, 1.9 %
- Armour Deck: 391 tons, 4.2 %
- Conning Tower: 28 tons, 0.3 %
Machinery: 2,584 tons, 27.7 %
Hull, fittings & equipment: 3,516 tons, 37.7 %
Fuel, ammunition & stores: 1,895 tons, 20.3 %
Miscellaneous weights: 50 tons, 0.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
9,435 lbs / 4,280 Kg = 91.6 x 5.9 " / 150 mm shells or 1.3 torpedoes
Stability (Unstable if below 1.00): 1.25
Metacentric height 3.1 ft / 0.9 m
Roll period: 13.2 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.51
Seaboat quality (Average = 1.00): 1.20

Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.470
Length to Beam Ratio: 10.89 : 1
'Natural speed' for length: 24.50 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 58
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: 23.46 ft / 7.15 m
- Forecastle (20 %): 23.46 ft / 7.15 m (17.39 ft / 5.30 m aft of break)
- Mid (50 %): 17.39 ft / 5.30 m
- Quarterdeck (15 %): 17.39 ft / 5.30 m
- Stern: 17.39 ft / 5.30 m
- Average freeboard: 18.60 ft / 5.67 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 108.7 %
- Above water (accommodation/working, high = better): 113.0 %
Waterplane Area: 21,468 Square feet or 1,994 Square metres
Displacement factor (Displacement / loading): 118 %
Structure weight / hull surface area: 97 lbs/sq ft or 474 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.32
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

5

Sunday, October 3rd 2004, 3:35pm

That length:beam ratio is very, very high and you are using triple 6" turrets...

Why use 100mm guns in turrets ?

HoOmAn

Keeper of the Sacred Block Coefficient

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6

Sunday, October 3rd 2004, 6:15pm

Quoted

Originally posted by AdmKuznetsov
And Russian 8,000 ton cruisers have exceeded a 10:1 L:B ratio since the historical Admiral Lazarev class of 1913.

http://hera.mni.fh-giessen.de/~hg6339/data/index.html

She's also within the Gentleman's Agreement.


Indeed, I just thought you might get a better result on a more beamier hull - especially because you´re using triples for your main guns.

7

Sunday, October 10th 2004, 7:35pm

Admiral Nakhimov class corrected

Admiral Nakhimov class, Russian Light Cruisers laid down 1924

Displacement:
7,562 t light; 7,986 t standard; 9,331 t normal; 10,407 t full load

Dimensions: Length overall / water x beam x draught
604.15 ft / 600.39 ft x 55.12 ft x 21.00 ft (normal load)
184.15 m / 183.00 m x 16.80 m x 6.40 m

Armament:
12 - 5.91" / 150 mm guns (4x3 guns), 125.66lbs / 57.00kg shells, 1924 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
12 - 3.94" / 100 mm guns (6x2 guns), 37.48lbs / 17.00kg shells, 1924 Model
Dual purpose guns in deck mounts with hoists
on side, evenly spread
24 - 1.46" / 37.0 mm guns (8x3 guns), 1.54lbs / 0.70kg shells, 1924 Model
Dual purpose guns in deck mounts
on side, evenly spread
Weight of broadside 1,995 lbs / 905 kg
Shells per gun, main battery: 200
12 - 20.9" / 530 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2.95" / 75 mm 424.38 ft / 129.35 m 9.51 ft / 2.90 m
Ends: Unarmoured
Main Belt covers 109 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.95" / 75 mm 0.98" / 25 mm 0.79" / 20 mm
2nd: 0.98" / 25 mm 0.98" / 25 mm -
3rd: 0.98" / 25 mm - -

- Armour deck: 0.98" / 25 mm, Conning tower: 2.95" / 75 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 78,435 shp / 58,513 Kw = 32.00 kts
Range 10,300nm at 15.00 kts (Bunkerage = 2,421 tons)

Aviation:
2 Seaplanes, 1 Catapult

Complement:
474 - 617

Cost:
£2.468 million / $9.872 million

Distribution of weights at normal displacement:
Armament: 205 tons, 2.2 %
Armour: 1,058 tons, 11.3 %
- Belts: 486 tons, 5.2 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 152 tons, 1.6 %
- Armour Deck: 391 tons, 4.2 %
- Conning Tower: 28 tons, 0.3 %
Machinery: 2,584 tons, 27.7 %
Hull, fittings & equipment: 3,666 tons, 39.3 %
Fuel, ammunition & stores: 1,769 tons, 19.0 %
Miscellaneous weights: 50 tons, 0.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
9,331 lbs / 4,233 Kg = 90.6 x 5.9 " / 150 mm shells or 1.3 torpedoes
Stability (Unstable if below 1.00): 1.19
Metacentric height 2.8 ft / 0.9 m
Roll period: 13.8 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.68
Seaboat quality (Average = 1.00): 1.20

Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.470
Length to Beam Ratio: 10.89 : 1
'Natural speed' for length: 24.50 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 58
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: 21.33 ft / 6.50 m
- Forecastle (30 %): 21.33 ft / 6.50 m (21.16 ft / 6.45 m aft of break)
- Mid (50 %): 17.22 ft / 5.25 m
- Quarterdeck (15 %): 17.22 ft / 5.25 m
- Stern: 17.22 ft / 5.25 m
- Average freeboard: 18.85 ft / 5.75 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 108.7 %
- Above water (accommodation/working, high = better): 116.6 %
Waterplane Area: 21,468 Square feet or 1,994 Square metres
Displacement factor (Displacement / loading): 118 %
Structure weight / hull surface area: 101 lbs/sq ft or 491 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.37
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily