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Saturday, January 26th 2008, 5:15pm

New Russian ships for 1936.

Well, um, there aren't any. Sorry.

What there is is the beginning of a major program of refurbishment for several older capital ships, starting with:

Imperator Petr Veliki class, Russian Battleship laid down 1918 (Engine 1936)

This class is getting new 420mm guns in triple turrets to replace the present 381mm quads, new engines, additional deck armor, replacement of casemate 130mm guns with 130mm DP guns in deck mounts, a new light AA battery, bulges, and a reshaped bow.

Displacement:
36,680 t light; 39,303 t standard; 43,621 t normal; 47,076 t full load

Dimensions: Length overall / water x beam x draught
721.78 ft / 721.78 ft x 106.96 ft (Bulges 116.80 ft) x 30.18 ft (normal load)
220.00 m / 220.00 m x 32.60 m (Bulges 35.60 m) x 9.20 m

Armament:
9 - 16.54" / 420 mm guns (3x3 guns), 2,645.55lbs / 1,200.00kg shells, 1936 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority aft, 1 raised mount aft - superfiring
24 - 5.12" / 130 mm guns (8x3 guns), 79.37lbs / 36.00kg shells, 1936 Model
Dual purpose guns in deck mounts with hoists
on side, evenly spread, 2 raised mounts
8 - 1.46" / 37.0 mm guns (2x4 guns), 1.55lbs / 0.70kg shells, 1936 Model
Anti-aircraft guns in deck mounts with hoists
on centreline ends, evenly spread, all raised mounts
56 - 1.46" / 37.0 mm guns (14x4 guns), 1.55lbs / 0.70kg shells, 1936 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread, 6 raised mounts
16 - 0.55" / 14.0 mm guns (8x2 guns), 0.08lbs / 0.04kg shells, 1936 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 25,815 lbs / 11,710 kg
Shells per gun, main battery: 120

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 14.2" / 360 mm 433.07 ft / 132.00 m 13.12 ft / 4.00 m
Ends: Unarmoured
Main Belt covers 92 % of normal length

- Torpedo Bulkhead and Bulges:
1.97" / 50 mm 433.07 ft / 132.00 m 29.53 ft / 9.00 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 15.7" / 400 mm 7.87" / 200 mm 11.8" / 300 mm
2nd: 0.98" / 25 mm 0.20" / 5 mm -
3rd: 0.98" / 25 mm 0.20" / 5 mm -
4th: 0.98" / 25 mm 0.20" / 5 mm -

- Armour deck: 5.51" / 140 mm, Conning tower: 15.75" / 400 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 95,181 shp / 71,005 Kw = 26.00 kts
Range 9,400nm at 18.00 kts
Bunker at max displacement = 7,773 tons

Complement:
1,508 - 1,961

Cost:
£7.947 million / $31.787 million

Distribution of weights at normal displacement:
Armament: 2,757 tons, 6.3 %
Armour: 13,378 tons, 30.7 %
- Belts: 3,567 tons, 8.2 %
- Torpedo bulkhead: 931 tons, 2.1 %
- Armament: 2,702 tons, 6.2 %
- Armour Deck: 5,757 tons, 13.2 %
- Conning Tower: 420 tons, 1.0 %
Machinery: 2,671 tons, 6.1 %
Hull, fittings & equipment: 17,674 tons, 40.5 %
Fuel, ammunition & stores: 6,941 tons, 15.9 %
Miscellaneous weights: 200 tons, 0.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
57,201 lbs / 25,946 Kg = 25.3 x 16.5 " / 420 mm shells or 9.8 torpedoes
Stability (Unstable if below 1.00): 1.13
Metacentric height 7.0 ft / 2.1 m
Roll period: 18.5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.63
Seaboat quality (Average = 1.00): 1.15

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.600
Length to Beam Ratio: 6.18 : 1
'Natural speed' for length: 26.87 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 61
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: 32.15 ft / 9.80 m
- Forecastle (27 %): 22.97 ft / 7.00 m
- Mid (60 %): 22.97 ft / 7.00 m (14.76 ft / 4.50 m aft of break)
- Quarterdeck (15 %): 14.76 ft / 4.50 m
- Stern: 15.75 ft / 4.80 m
- Average freeboard: 20.75 ft / 6.32 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 85.4 %
- Above water (accommodation/working, high = better): 138.6 %
Waterplane Area: 56,462 Square feet or 5,245 Square metres
Displacement factor (Displacement / loading): 106 %
Structure weight / hull surface area: 227 lbs/sq ft or 1,111 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 excellent
Ship has slow, easy roll, a good, steady gun platform

The battleships of the Black Sea Fleet are really showing their age, and two of them left their main and secondary armament in the Far East when they were transferred to the Black Sea Fleet. Here is what's happening to them:

Imperitritsa Maria, Russian Battleship laid down 1911 (Engine 1936)

Imperitritsa Maria is getting new 381mm/45 guns in twin turrets to replace her triple 305mm/52. Other changes include increased deck armor, bulges, a reshaped bow, conversion to oil firing, new turbines, and a new AA battery. The 100mm guns are not all on side. The two superfiring mounts are located just forward and aft of the aft conning tower, thus able to bear on either beam.

Displacement:
23,756 t light; 25,321 t standard; 26,942 t normal; 28,238 t full load

Dimensions: Length overall / water x beam x draught
554.53 ft / 544.62 ft x 98.43 ft (Bulges 108.92 ft) x 27.89 ft (normal load)
169.02 m / 166.00 m x 30.00 m (Bulges 33.20 m) x 8.50 m

Armament:
8 - 15.00" / 381 mm guns (4x2 guns), 1,984.16lbs / 900.00kg shells, 1936 Model
Breech loading guns in turrets (on barbettes)
on centreline, evenly spread
Aft Main mounts separated by engine room
18 - 5.12" / 130 mm guns in single mounts, 79.37lbs / 36.00kg shells, 1911 Model
Breech loading guns in casemate mounts
on side, evenly spread
18 guns in hull casemates - Limited use in heavy seas
18 - 3.94" / 100 mm guns (6x3 guns), 35.27lbs / 16.00kg shells, 1936 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread, 2 raised mounts
32 - 1.46" / 37.0 mm guns (8x4 guns), 1.55lbs / 0.70kg shells, 1936 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread, 4 raised mounts
8 - 0.55" / 14.0 mm guns in single mounts, 0.08lbs / 0.04kg shells, 1936 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 17,987 lbs / 8,159 kg
Shells per gun, main battery: 100

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 12.0" / 305 mm 328.08 ft / 100.00 m 13.12 ft / 4.00 m
Ends: Unarmoured
Upper: 7.99" / 203 mm 328.08 ft / 100.00 m 8.20 ft / 2.50 m
Main Belt covers 93 % of normal length

- Torpedo Bulkhead and Bulges:
1.57" / 40 mm 328.08 ft / 100.00 m 28.22 ft / 8.60 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 13.8" / 350 mm 7.99" / 203 mm 10.0" / 254 mm
2nd: 5.98" / 152 mm - -
3rd: 0.98" / 25 mm 0.20" / 5 mm -
4th: 0.98" / 25 mm 0.20" / 5 mm -

- Armour deck: 5.12" / 130 mm, Conning tower: 12.01" / 305 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 48,784 shp / 36,393 Kw = 23.00 kts
Range 7,000nm at 15.00 kts
Bunker at max displacement = 2,917 tons

Complement:
1,050 - 1,366

Cost:
£2.630 million / $10.521 million

Distribution of weights at normal displacement:
Armament: 1,913 tons, 7.1 %
Armour: 10,157 tons, 37.7 %
- Belts: 3,315 tons, 12.3 %
- Torpedo bulkhead: 539 tons, 2.0 %
- Armament: 2,460 tons, 9.1 %
- Armour Deck: 3,609 tons, 13.4 %
- Conning Tower: 232 tons, 0.9 %
Machinery: 1,369 tons, 5.1 %
Hull, fittings & equipment: 10,248 tons, 38.0 %
Fuel, ammunition & stores: 3,185 tons, 11.8 %
Miscellaneous weights: 70 tons, 0.3 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
34,170 lbs / 15,499 Kg = 20.2 x 15.0 " / 381 mm shells or 6.5 torpedoes
Stability (Unstable if below 1.00): 1.13
Metacentric height 6.1 ft / 1.9 m
Roll period: 18.5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.49
Seaboat quality (Average = 1.00): 1.11

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.570
Length to Beam Ratio: 5.00 : 1
'Natural speed' for length: 23.34 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 63
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.23 ft / 8.30 m
- Forecastle (20 %): 17.39 ft / 5.30 m
- 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: 18.18 ft / 5.54 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 89.1 %
- Above water (accommodation/working, high = better): 120.2 %
Waterplane Area: 38,119 Square feet or 3,541 Square metres
Displacement factor (Displacement / loading): 95 %
Structure weight / hull surface area: 195 lbs/sq ft or 953 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 1.82
- 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


Sevastopol is next.

Sevastopol, Russian Battleship laid down 1910 (Engine 1936)

Of special interest here is that R turret is removed, but the barbette remains, plated over. 888 tons of misc weight was added to reflect this. She is armed with refurbished 381mm/52 guns from the Imperator Petr Veliki class. Other alterations are similar to Imperitritsa Maria's.

Displacement:
23,543 t light; 24,877 t standard; 26,806 t normal; 28,349 t full load

Dimensions: Length overall / water x beam x draught
605.28 ft / 594.65 ft x 80.38 ft (Bulges 90.22 ft) x 26.90 ft (normal load)
184.49 m / 181.25 m x 24.50 m (Bulges 27.50 m) x 8.20 m

Armament:
6 - 15.00" / 381 mm guns (3x2 guns), 1,984.16lbs / 900.00kg shells, 1936 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward
16 - 5.12" / 130 mm guns in single mounts, 79.37lbs / 36.00kg shells, 1910 Model
Breech loading guns in casemate mounts
on side, evenly spread
16 guns in hull casemates - Limited use in heavy seas
18 - 3.94" / 100 mm guns (6x3 guns), 37.48lbs / 17.00kg shells, 1936 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread, 2 raised mounts
32 - 1.46" / 37.0 mm guns (8x4 guns), 1.55lbs / 0.70kg shells, 1936 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread, 4 raised mounts
8 - 0.55" / 14.0 mm guns in single mounts, 0.08lbs / 0.04kg shells, 1936 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 13,900 lbs / 6,305 kg
Shells per gun, main battery: 100

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 11.0" / 279 mm 393.70 ft / 120.00 m 13.12 ft / 4.00 m
Ends: Unarmoured
Upper: 7.99" / 203 mm 393.70 ft / 120.00 m 8.20 ft / 2.50 m
Main Belt covers 102 % of normal length

- Torpedo Bulkhead and Bulges:
1.57" / 40 mm 393.70 ft / 120.00 m 26.25 ft / 8.00 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 12.0" / 305 mm 7.99" / 203 mm 7.99" / 203 mm
2nd: 5.98" / 152 mm - -
3rd: 0.98" / 25 mm 0.20" / 5 mm -
4th: 0.98" / 25 mm 0.20" / 5 mm -

- Armour deck: 4.72" / 120 mm, Conning tower: 10.00" / 254 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 88,746 shp / 66,204 Kw = 27.00 kts
Range 8,500nm at 15.00 kts
Bunker at max displacement = 3,472 tons

Complement:
1,046 - 1,361

Cost:
£2.411 million / $9.645 million

Distribution of weights at normal displacement:
Armament: 1,475 tons, 5.5 %
Armour: 9,308 tons, 34.7 %
- Belts: 3,552 tons, 13.3 %
- Torpedo bulkhead: 602 tons, 2.2 %
- Armament: 1,761 tons, 6.6 %
- Armour Deck: 3,200 tons, 11.9 %
- Conning Tower: 193 tons, 0.7 %
Machinery: 2,490 tons, 9.3 %
Hull, fittings & equipment: 9,282 tons, 34.6 %
Fuel, ammunition & stores: 3,262 tons, 12.2 %
Miscellaneous weights: 988 tons, 3.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
33,149 lbs / 15,036 Kg = 19.6 x 15.0 " / 381 mm shells or 5.1 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 4.8 ft / 1.5 m
Roll period: 17.3 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.61
Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.650
Length to Beam Ratio: 6.59 : 1
'Natural speed' for length: 24.39 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 29.20 ft / 8.90 m
- Forecastle (20 %): 19.36 ft / 5.90 m
- Mid (40 %): 19.36 ft / 5.90 m
- Quarterdeck (15 %): 19.36 ft / 5.90 m
- Stern: 19.36 ft / 5.90 m
- Average freeboard: 20.14 ft / 6.14 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 101.6 %
- Above water (accommodation/working, high = better): 129.1 %
Waterplane Area: 36,616 Square feet or 3,402 Square metres
Displacement factor (Displacement / loading): 99 %
Structure weight / hull surface area: 170 lbs/sq ft or 828 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.53
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

Twin semiautomatic 100mm AA guns simmed as triples


Imperitritsa Maria has new 381mm/45 guns, because mounting 381mm/52s would require too great an alteration of her smokestack arrangement. Here are the stats of the new guns, designed to fire the present 900kg 381mm shell:

Russian 381mm/45 Model 1936


Caliber = 38.1 cm (15.0 inch)
Shell weight = 900 kg (1984 lbs)
Muzzle velocity = 752 m/s (2468 fps)

Relative ballistic performance: 0.95

Muzzle energy = 254.8 megajoules = 93894.7 foot-tons

Relative muzzle energy: 0.87

Barrel length: 45 calibers


Elevation Range Time Velocity Fall Angle

2.5 deg 4600 meters 6.6 sec 666 m/s 2.7 deg
5.0 deg 8600 meters 12.9 sec 602 m/s 5.8 deg
7.5 deg 12000 meters 19.0 sec 553 m/s 9.3 deg
10.0 deg 15000 meters 24.8 sec 518 m/s 12.8 deg
12.5 deg 17700 meters 30.4 sec 491 m/s 16.5 deg
15.0 deg 20100 meters 35.9 sec 472 m/s 20.3 deg
20.0 deg 24300 meters 46.4 sec 450 m/s 27.7 deg
25.0 deg 27700 meters 56.3 sec 443 m/s 34.5 deg
30.0 deg 30400 meters 65.8 sec 446 m/s 40.6 deg
35.0 deg 32500 meters 74.8 sec 454 m/s 46.0 deg
40.0 deg 33900 meters 83.3 sec 465 m/s 50.7 deg
45.0 deg 34500 meters 91.4 sec 477 m/s 55.1 deg
50.0 deg 34200 meters 98.8 sec 490 m/s 59.0 deg


Armor Penetration - Vertical Belt Armor

(Relative armor quality, 1.00)

Maximum penetration: 70.74 cm


Elevation Range Belt Deck

1.2 deg 2300 meters 65 cm
2.5 deg 4600 meters 60 cm
3.1 deg 5600 meters ... 2 cm
4.0 deg 7100 meters 55 cm
5.6 deg 9400 meters ... 4 cm
5.8 deg 9800 meters 50 cm
8.1 deg 12800 meters 45 cm
8.2 deg 12900 meters ... 6 cm
11.0 deg 16200 meters 40 cm
11.1 deg 16300 meters ... 8 cm
14.9 deg 20000 meters 35 cm 10 cm
18.9 deg 23400 meters ... 12 cm
20.5 deg 24600 meters 30 cm
21.7 deg 25500 meters ... 14 cm
24.6 deg 27400 meters ... 16 cm
27.4 deg 29100 meters ... 18 cm
28.7 deg 29800 meters 25 cm
30.4 deg 30600 meters ... 20 cm
33.3 deg 31900 meters ... 22 cm
36.3 deg 32900 meters ... 24 cm
39.4 deg 33700 meters ... 26 cm
40.7 deg 34000 meters 20 cm
42.5 deg 34300 meters ... 28 cm
45.7 deg 34500 meters ... 30 cm
49.2 deg 34300 meters ... 32 cm


Maximum range = 34500 meters at 46.1 deg elevation

This post has been edited 2 times, last edit by "AdmKuznetsov" (Jan 26th 2008, 6:00pm)


HoOmAn

Keeper of the Sacred Block Coefficient

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2

Saturday, January 26th 2008, 11:53pm

Do you have drawings?

3

Sunday, January 27th 2008, 1:11am

working on 'em actually

here's a side view of Sevastopol, at the bottom of the page:

http://admkuznetsov.tripod.com/id12.html

The funnels are oval in cross section, to permit the required volume of smoke to flow.

This post has been edited 2 times, last edit by "AdmKuznetsov" (Jan 28th 2008, 2:05am)