WesWorld

As you may have noticed, the Russian Federation has laid down a number of new ships for 1922. They are:

4 heavy cruiser-sized icebreakers, the Arctica class.
4 light cruisers, the General-Admiral Apraxin class.
10 fast minelayers, the Oka class.

As the conversion of the Collier Canopus to Russia's first aircraft carrier finishes at Sevastopol, the conversion of the predreadnought battleship Tsessarevich to the floating crane Trud begins at Vladivostok.

I will post the stats on these ships individually.

Meanwhile, the construction of the Sviatoslav class heavy cruisers, delayed by the replacement of their originally intended 23.4cm guns with 21cm guns, continues slowly.

These are the ships that will challenge the ice of the Northern Sea Route!

Arctica class Icebreakers, laid down 1922

Length, 170.0 m x Beam, 33.0 m x Depth, 5.5 m
15243 tonnes normal displacement (11075 tonnes standard)

Main battery: 4 x 13.0-cm (2 x 2)
AA battery: 8 x 3.7-cm
Light battery: 4 x 1.3-cm

Weight of broadside: 128 kg

Main belt, 5.0 cm; bow and stern, 10.0 cm
Torpedo bulkhead, 10.0 cm

Battery armor:
Main, 2.5 cm
AA, 2.5 cm shields

Aircraft - 3 Sea/Skiplanes, 1 Catapult

Cargo - 1000 tons

Maximum speed for 21312 shaft kw = 22.00 knots
Approximate cruising radius, 22200 nm / 15 knots

Typical complement: 343-446


Estimated cost, $5.905 million (£1.476 million)

Remarks:

Relative extent of belt armor, 50 percent of 'typical' coverage.

Good seaboat; rides out heavy weather easily.

Magazines and engineering spaces are roomy, with superior
watertight subdivision.

Ship is roomy, with superior accommodation and working space.


Distribution of weights:
Percent
normal
displacement:

Armament ......................... 35 tonnes = 0 pct
Armor, total ..................... 1362 tonnes = 9 pct

Belt 377 tonnes = 2 pct
Torpedo bulkhead 953 tonnes = 6 pct
Armament 31 tonnes = 0 pct

Machinery ........................ 969 tonnes = 6 pct
Hull and fittings; equipment ..... 7306 tonnes = 48 pct
Fuel, ammunition, stores ......... 4496 tonnes = 29 pct
Miscellaneous weights ............ 1075 tonnes = 7 pct
-----
15243 tonnes = 100 pct

Estimated metacentric height, 5.1 m

Displacement summary:

Light ship: 10747 tonnes
Standard displacement: 11075 tonnes
Normal service: 15243 tonnes
Full load: 18517 tonnes

Loading submergence 3507 tonnes/metre

+++++++++++++++++++++++++


Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.99

Shellfire needed to sink: 27097 kg = 888.3 x 13.0-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)

Torpedoes needed to sink: 18.4
(Approximates number of 'typical'
torpedo hits needed to sink ship)

Relative steadiness as gun platform, 47 percent
(50 percent is 'average')

Relative rocking effect from firing to beam, 0.00

Relative quality as a seaboat: 1.21

+++++++++++++++++++++++++


Hull form characteristics:

Block coefficient: 0.49
Sharpness coefficient: 0.41
Hull speed coefficient 'M' = 6.88
'Natural speed' for length = 23.6 knots
Power going to wave formation
at top speed: 44 percent


Estimated hull characteristics and strength:

Relative underwater volume absorbed by
magazines and engineering spaces: 39 percent

Relative accommodation and working space: 171 percent


Displacement factor: 327 percent
(Displacement relative to loading factors)


Relative cross-sectional hull strength: 1.50
(Structure weight per square
metre of hull surface: 783 kg)

Relative longitudinal hull strength: 1.50
(for 5.02 m average freeboard)

Relative composite hull strength: 1.50

+++++++++++++++++++++++++


[Machine-readable parameters: Spring Style v. 1.2.1]

557.60 x 108.24 x 18.04; 16.47 -- Dimensions
0.49 -- Block coefficient
1922 -- Year laid down
22.00 / 22200 / 15.00; Oil-fired turbine or equivalent -- Speed / radius / cruise
1075 tons -- Miscellaneous weights
++++++++++
4 x 5.12; 2; 0 -- Main battery; turrets; superfiring
:
0 -- No secondary battery
8 x 1.46 -- Tertiary (QF/AA) battery
Gun-shields
:
4 x 0.51 -- Fourth (light) battery
0 -- No torpedo armament
++++++++++
1.97 / 3.94 / 0.00 / 3.94; 50 -- Belt armor; relative extent
0.00 / 0.00 -- Deck / CT
0.98 / 0.00 / 0.98 / 0.00 -- Battery armor


(Note: For portability, values are stored in Anglo-American units)


+++++++++++++++++++++++++++++++++++++++++++++++++++++++

General Admiral Apraxin class light cruisers, laid down 1922

Length, 180.0 m x Beam, 16.7 m x Depth, 6.3 m
8974 tonnes normal displacement (7784 tonnes standard)

Main battery: 12 x 15.0-cm (4 x 3; 2 superfiring)
Secondary battery: 12 x 10.0-cm (6 x 2)
AA battery: 16 x 3.7-cm

Weight of broadside: 739 kg

12 TT, 53.0 cm in two sextuple mounts

Main belt, 7.5 cm; ends unarmored
Armor deck, average 2.5 cm
Conning tower, 5.0 cm

Battery armor:
Main, 7.5 cm / secondary, 2.5 cm
AA, 2.5 cm shields

Aircraft - 2 Seaplanes, 1 Catapult

Maximum speed for 54141 shaft kw = 31.50 knots
Approximate cruising radius, 9000 nm / 15 knots

Typical complement: 461-599


Estimated cost, $8.473 million (£2.118 million)

Remarks:

Relative extent of belt armor, 108 percent of 'typical' coverage.

Ship has slow, easy roll; a good, steady gun platform.

Good seaboat; rides out heavy weather easily.


Distribution of weights:
Percent
normal
displacement:

Armament ......................... 203 tonnes = 2 pct
Armor, total ..................... 1198 tonnes = 13 pct

Belt 442 tonnes = 5 pct
Deck 355 tonnes = 4 pct
C.T. 18 tonnes = 0 pct
Armament 382 tonnes = 4 pct

Machinery ........................ 2461 tonnes = 27 pct
Hull and fittings; equipment ..... 3557 tonnes = 40 pct
Fuel, ammunition, stores ......... 1505 tonnes = 17 pct
Miscellaneous weights ............ 50 tonnes = 1 pct
-----
8974 tonnes = 100 pct

Estimated metacentric height, 0.7 m

Displacement summary:

Light ship: 7469 tonnes
Standard displacement: 7784 tonnes
Normal service: 8974 tonnes
Full load: 9890 tonnes

Loading submergence 1827 tonnes/metre

+++++++++++++++++++++++++


Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.09

Shellfire needed to sink: 4044 kg = 86.4 x 15.0-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)

Torpedoes needed to sink: 1.3
(Approximates number of 'typical'
torpedo hits needed to sink ship)

Relative steadiness as gun platform, 70 percent
(50 percent is 'average')

Relative rocking effect from firing to beam, 0.61

Relative quality as a seaboat: 1.20

+++++++++++++++++++++++++


Hull form characteristics:

Block coefficient: 0.47
Sharpness coefficient: 0.31
Hull speed coefficient 'M' = 8.69
'Natural speed' for length = 24.3 knots
Power going to wave formation
at top speed: 53 percent


Estimated hull characteristics and strength:

Relative underwater volume absorbed by
magazines and engineering spaces: 107 percent

Relative accommodation and working space: 115 percent


Displacement factor: 116 percent
(Displacement relative to loading factors)


Relative cross-sectional hull strength: 0.97
(Structure weight per square
metre of hull surface: 501 kg)

Relative longitudinal hull strength: 1.30
(for 5.80 m average freeboard;
freeboard adjustment +1.28 m)

Relative composite hull strength: 1.00

+++++++++++++++++++++++++


[Machine-readable parameters: Spring Style v. 1.2.1]

590.40 x 54.78 x 20.66; 19.02 -- Dimensions
0.47 -- Block coefficient
1922 -- Year laid down
31.50 / 9000 / 15.00; Oil-fired turbine or equivalent -- Speed / radius / cruise
50 tons -- Miscellaneous weights
++++++++++
12 x 5.91; 4; 2 -- Main battery; turrets; superfiring
:
12 x 3.94; 6 -- Secondary battery; turrets
:
16 x 1.46 -- Tertiary (QF/AA) battery
Gun-shields
:
0 -- No fourth (light) battery
12 / 0 / 20.87 -- TT / submerged / size
++++++++++
2.95 / 0.00 / 0.00 / 0.00; 108 -- Belt armor; relative extent
0.98 / 1.97 -- Deck / CT
2.95 / 0.98 / 0.98 / 0.00 -- Battery armor


(Note: For portability, values are stored in Anglo-American units)


+++++++++++++++++++++++++++++++++++++++++++++++++++++++

Oka class fast minelayer, laid down 1922

Length, 70.0 m x Beam, 7.1 m x Depth, 3.0 m
691 tonnes normal displacement (599 tonnes standard)

Main battery: 1 x 5.7-cm (1 x 1 fwd)
AA battery: 2 x 3.7-cm (1 x 2 aft)
Light battery: 2 x 1.3-cm (1 x 1 on each beam)

Weight of broadside: 4 kg

50 tons mines and minelaying equipment

Hull unarmored

Maximum speed for 14578 shaft kw = 30.00 knots
Approximate cruising radius, 3100 nm / 15 knots

Typical complement: 67-88


Estimated cost, $790,000 (£197,000)

Remarks:

Caution: Hull structure is subject to strain in open-sea
conditions.

Ship has slow, easy roll; a good, steady gun platform.

Magazines and engineering spaces are cramped, with poor
watertight subdivision.


Distribution of weights:
Percent
normal
displacement:

Armament ......................... 1 tonnes = 0 pct
Machinery ........................ 364 tonnes = 53 pct
Hull and fittings; equipment ..... 169 tonnes = 24 pct
Fuel, ammunition, stores ......... 107 tonnes = 16 pct
Miscellaneous weights ............ 50 tonnes = 7 pct
-----
691 tonnes = 100 pct

Estimated metacentric height, 0.2 m

Displacement summary:

Light ship: 584 tonnes
Standard displacement: 599 tonnes
Normal service: 691 tonnes
Full load: 763 tonnes

Loading submergence 298 tonnes/metre

+++++++++++++++++++++++++


Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.13

Shellfire needed to sink: 79 kg = 30.9 x 5.7-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)

Torpedoes needed to sink: 0.2
(Approximates number of 'typical'
torpedo hits needed to sink ship)

Relative steadiness as gun platform, 70 percent
(50 percent is 'average')

Relative rocking effect from firing to beam, 0.03

Relative quality as a seaboat: 1.00

+++++++++++++++++++++++++


Hull form characteristics:

Block coefficient: 0.46
Sharpness coefficient: 0.32
Hull speed coefficient 'M' = 7.93
'Natural speed' for length = 15.2 knots
Power going to wave formation
at top speed: 73 percent


Estimated hull characteristics and strength:

Relative underwater volume absorbed by
magazines and engineering spaces: 179 percent

Relative accommodation and working space: 115 percent


Displacement factor: 50 percent
(Displacement relative to loading factors)


Relative cross-sectional hull strength: 0.50
(Structure weight per square
metre of hull surface: 120 kg)

Relative longitudinal hull strength: 2.01
(for 3.91 m average freeboard;
freeboard adjustment +1.20 m)

Relative composite hull strength: 0.57

+++++++++++++++++++++++++


[Machine-readable parameters: Spring Style v. 1.2.1]

229.60 x 23.29 x 9.84; 12.82 -- Dimensions
0.46 -- Block coefficient
1922 -- Year laid down
30.00 / 3100 / 15.00; Oil-fired turbine or equivalent -- Speed / radius / cruise
50 tons -- Miscellaneous weights
++++++++++
1 x 2.24; 0 -- Main battery; turrets
Central positioning of guns
:
0 -- No secondary battery
2 x 1.46 -- Tertiary (QF/AA) battery
:
2 x 0.51 -- Fourth (light) battery
0 -- No torpedo armament
++++++++++
0.00 -- No belt armor
0.00 / 0.00 -- Deck / CT
0.00 -- No battery armor


(Note: For portability, values are stored in Anglo-American units)


+++++++++++++++++++++++++++++++++++++++++++++++++++++++

Russian mobile crane Trud, laid down 1903

Length, 117.6 m x Beam, 22.6 m x Depth, 8.2 m
13184 tonnes normal displacement (9302 tonnes standard)

Main battery: 1 x 1.3-cm

Weight of broadside: 0 kg

Hull unarmored

Maximum speed for 6374 indicated kw = 16.00 knots
Approximate cruising radius, 25800 nm / 10 knots

Typical complement: 307-400


Estimated cost, $1.979 million (£495,000)

Remarks:

Ship has slow, easy roll; a good, steady gun platform.

Excellent seaboat; comfortable and able to fight her guns
in the heaviest weather.

Magazines and engineering spaces are roomy, with superior
watertight subdivision.


Distribution of weights:
Percent
normal
displacement:

Machinery ........................ 1275 tonnes = 10 pct
Hull and fittings; equipment ..... 2763 tonnes = 21 pct
Fuel, ammunition, stores ......... 4146 tonnes = 31 pct
Miscellaneous weights ............ 5000 tonnes = 38 pct
-----
13184 tonnes = 100 pct

Estimated metacentric height, 1.1 m

Displacement summary:

Light ship: 9038 tonnes
Standard displacement: 9302 tonnes
Normal service: 13184 tonnes
Full load: 16236 tonnes

Loading submergence 1903 tonnes/metre

+++++++++++++++++++++++++


Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.09

Shellfire needed to sink: 6728 kg = 220796.0 x 1.3-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)

Torpedoes needed to sink: 2.4
(Approximates number of 'typical'
torpedo hits needed to sink ship)

Relative steadiness as gun platform, 70 percent
(50 percent is 'average')

Relative rocking effect from firing to beam, 0.00

Relative quality as a seaboat: 1.69

+++++++++++++++++++++++++


Hull form characteristics:

Block coefficient: 0.60
Sharpness coefficient: 0.45
Hull speed coefficient 'M' = 4.99
'Natural speed' for length = 19.6 knots
Power going to wave formation
at top speed: 43 percent


Estimated hull characteristics and strength:

Relative underwater volume absorbed by
magazines and engineering spaces: 73 percent

Relative accommodation and working space: 82 percent


Displacement factor: 175 percent
(Displacement relative to loading factors)


Relative cross-sectional hull strength: 1.04
(Structure weight per square
metre of hull surface: 465 kg)

Relative longitudinal hull strength: 1.92
(for 4.00 m average freeboard;
freeboard adjustment -0.88 m)

Relative composite hull strength: 1.10

+++++++++++++++++++++++++


[Machine-readable parameters: Spring Style v. 1.2.1]

385.73 x 74.13 x 26.90; 13.12 -- Dimensions
0.60 -- Block coefficient
1903 -- Year laid down
16.00 / 25800 / 10.00; Reciprocating -- Speed / radius / cruise
5000 tons -- Miscellaneous weights
++++++++++
1 x 0.51; 0 -- Main battery; turrets
Central positioning of guns
:
0 -- No secondary battery
0 -- No tertiary (QF/AA) battery
0 -- No fourth (light) battery
0 -- No torpedo armament
++++++++++
0.00 -- No belt armor
0.00 / 0.00 -- Deck / CT
0.00 -- No battery armor


(Note: For portability, values are stored in Anglo-American units)


+++++++++++++++++++++++++++++++++++++++++++++++++++++++

Canopus class Aircraft Carrier, laid down 1920

Length, 160.0 m x Beam, 18.0 m x Depth, 6.0 m
10976 tonnes normal displacement (9331 tonnes standard)

Main battery: 4 x 13.0-cm (2 x 2)
Secondary battery: 8 x 10.0-cm
AA battery: 24 x 3.7-cm

Weight of broadside: 250 kg

Main belt, 10.0 cm; bow and stern, 5.0 cm
Armor deck, average 10.0 cm
Conning tower, 10.0 cm

Battery armor:
Main, 2.5 cm / secondary, 2.5 cm shields
AA, 2.5 cm shields

Aircraft - 32 (16 Fighters, 12 Torpedo Bombers, 4 Recce)

Maximum speed for 47417 shaft kw = 28.50 knots
Approximate cruising radius, 10700 nm / 15 knots

Typical complement: 536-697


Estimated cost, $6.487 million (£1.622 million)

Remarks:

Ship has slow, easy roll; a good, steady gun platform.

Excellent seaboat; comfortable and able to fight her guns
in the heaviest weather.

Magazines and engineering spaces are roomy, with superior
watertight subdivision.

Ship is roomy, with superior accommodation and working space.


Distribution of weights:
Percent
normal
displacement:

Armament ......................... 69 tonnes = 1 pct
Armor, total ..................... 2394 tonnes = 22 pct

Belt 638 tonnes = 6 pct
Deck 1657 tonnes = 15 pct
C.T. 42 tonnes = 0 pct
Armament 58 tonnes = 1 pct

Machinery ........................ 2222 tonnes = 20 pct
Hull and fittings; equipment ..... 3357 tonnes = 31 pct
Fuel, ammunition, stores ......... 1910 tonnes = 17 pct
Miscellaneous weights ............ 1024 tonnes = 9 pct
-----
10976 tonnes = 100 pct

Estimated metacentric height, 1.0 m

Displacement summary:

Light ship: 9066 tonnes
Standard displacement: 9331 tonnes
Normal service: 10976 tonnes
Full load: 12248 tonnes

Loading submergence 2131 tonnes/metre

+++++++++++++++++++++++++


Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.20

Shellfire needed to sink: 7958 kg = 260.9 x 13.0-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)

Torpedoes needed to sink: 2.0
(Approximates number of 'typical'
torpedo hits needed to sink ship)

Relative steadiness as gun platform, 70 percent
(50 percent is 'average')

Relative rocking effect from firing to beam, 0.17

Relative quality as a seaboat: 1.50

+++++++++++++++++++++++++


Hull form characteristics:

Block coefficient: 0.63
Sharpness coefficient: 0.39
Hull speed coefficient 'M' = 7.22
'Natural speed' for length = 22.9 knots
Power going to wave formation
at top speed: 58 percent


Estimated hull characteristics and strength:

Relative underwater volume absorbed by
magazines and engineering spaces: 81 percent

Relative accommodation and working space: 187 percent


Displacement factor: 131 percent
(Displacement relative to loading factors)


Relative cross-sectional hull strength: 0.95
(Structure weight per square
metre of hull surface: 438 kg)

Relative longitudinal hull strength: 1.65
(for 7.07 m average freeboard;
freeboard adjustment +2.37 m)

Relative composite hull strength: 1.00

+++++++++++++++++++++++++


[Machine-readable parameters: Spring Style v. 1.2.1]

524.80 x 59.04 x 19.68; 23.19 -- Dimensions
0.63 -- Block coefficient
1920 -- Year laid down
28.50 / 10700 / 15.00; Oil-fired turbine or equivalent -- Speed / radius / cruise
1024 tons -- Miscellaneous weights
++++++++++
4 x 5.12; 2; 0 -- Main battery; turrets; superfiring
:
8 x 3.94; 0 -- Secondary battery; turrets
Gun-shields
:
24 x 1.46 -- Tertiary (QF/AA) battery
Gun-shields
:
0 -- No fourth (light) battery
0 -- No torpedo armament
++++++++++
3.94 / 1.97 / 0.00 / 0.00; 100 -- Belt armor; relative extent
3.94 / 3.94 -- Deck / CT
0.98 / 0.98 / 0.98 / 0.00 -- Battery armor


(Note: For portability, values are stored in Anglo-American units)


+++++++++++++++++++++++++++++++++++++++++++++++++++++++

I like those fast minelayers. I think I'll send some agents over to the Russian Federation and have them copy those plans. :-)
Good thing I will have tons of smaller DDs which will patrol my shores.

Walter

And the Navy of the Russian Federation plan to continue that tradition.