WesWorld

Sadko-class Guardship
- Sadko
- Razin
- Tugarin
- Mikula Selyaninovich

Project 73 "Obsidian"-class Guardship
- SKR-01: Laid down January 1944
- SKR-02: Laid down January 1944
- SKR-03: Laid down January 1944
- SKR-04: Laid down January 1944
- SKR-05: Laid down January 1944
- SKR-06: Laid down January 1944
- SKR-07: Laid down July 1944
- SKR-08: Laid down July 1944
- SKR-09: Laid down July 1944
- SKR-10: Laid down July 1944
- SKR-11: Laid down July 1944
- SKR-12: Laid down July 1944
- SKR-13: Laid down January 1945
- SKR-14: Laid down January 1945
- SKR-15: Laid down January 1945
- SKR-16: Laid down January 1945
- SKR-17: Laid down January 1945
- SKR-18: Laid down January 1945
- SKR-19: Laid down July 1945
- SKR-20: Laid down July 1945
- SKR-21: Laid down July 1945
- SKR-22: Laid down July 1945
- SKR-23: Laid down July 1945
- SKR-24: Laid down July 1945

Sadko class, Russian Auxiliary Merchant Escort laid down 1930 (Engine 1939)

Displacement:
2,536 t light; 2,609 t standard; 2,942 t normal; 3,209 t full load

Dimensions: Length overall / water x beam x draught
317.62 ft / 295.28 ft x 49.21 ft x 11.81 ft (normal load)
96.81 m / 90.00 m x 15.00 m x 3.60 m

Armament:
2 - 5.12" / 130 mm guns in single mounts, 79.37lbs / 36.00kg shells, 1930 Model
Dual purpose guns in deck mounts
on centreline ends, evenly spread
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1930 Model
Anti-aircraft guns in deck mounts with hoists
on side, all amidships, all raised mounts - superfiring
4 - 0.55" / 14.0 mm guns in single mounts, 0.08lbs / 0.04kg shells, 1930 Model
Machine guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 165 lbs / 75 kg
Shells per gun, main battery: 150

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.20" / 5 mm -
2nd: 0.98" / 25 mm 0.20" / 5 mm 0.98" / 25 mm

Machinery:
Coal and oil fired boilers, steam turbines,
Geared drive, 2 shafts, 5,903 shp / 4,404 Kw = 18.00 kts
Range 9,000nm at 12.00 kts
Bunker at max displacement = 601 tons (15% coal)

Complement:
199 - 259

Cost:
£0.528 million / $2.111 million

Distribution of weights at normal displacement:
Armament: 18 tons, 0.6 %
Armour: 5 tons, 0.2 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 5 tons, 0.2 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 162 tons, 5.5 %
Hull, fittings & equipment: 831 tons, 28.2 %
Fuel, ammunition & stores: 407 tons, 13.8 %
Miscellaneous weights: 1,520 tons, 51.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
4,223 lbs / 1,915 Kg = 63.0 x 5.1 " / 130 mm shells or 1.3 torpedoes
Stability (Unstable if below 1.00): 1.12
Metacentric height 2.2 ft / 0.7 m
Roll period: 14.1 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.04
Seaboat quality (Average = 1.00): 1.64

Hull form characteristics:
Hull has raised forecastle, raised quarterdeck
Block coefficient: 0.600
Length to Beam Ratio: 6.00 : 1
'Natural speed' for length: 17.18 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 31
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 9.84 ft / 3.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.65 ft / 6.60 m
- Forecastle (33 %): 18.04 ft / 5.50 m (11.15 ft / 3.40 m aft of break)
- Mid (45 %): 11.15 ft / 3.40 m
- Quarterdeck (20 %): 16.40 ft / 5.00 m (11.15 ft / 3.40 m before break)
- Stern: 16.40 ft / 5.00 m
- Average freeboard: 14.95 ft / 4.56 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 79.2 %
- Above water (accommodation/working, high = better): 113.5 %
Waterplane Area: 10,628 Square feet or 987 Square metres
Displacement factor (Displacement / loading): 148 %
Structure weight / hull surface area: 55 lbs/sq ft or 266 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.92
- Longitudinal: 1.97
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Breakdown of Miscellaneous Weights:
Sonar - 10 tons
Surface search radar - 10 tons
Depth charges and throwers - 50 tons
Cargo-1400 tons

Ships in Class:
- Sadko
- Razin
- Tugarin
- Mikula Selyaninovich

Project 73 "Obsidian", Russian Storozhevoy Korabl' (Patrol Ship) laid down 1944

Displacement:
1,050 t light; 1,105 t standard; 1,196 t normal; 1,269 t full load

Dimensions: Length overall / water x beam x draught
326.33 ft / 311.68 ft x 32.81 ft x 10.17 ft (normal load)
99.46 m / 95.00 m x 10.00 m x 3.10 m

Armament:
3 - 3.94" / 100 mm guns in single mounts, 37.48lbs / 17.00kg shells, 1944 Model
Dual purpose guns in deck mounts
on centreline ends, majority forward, 1 raised mount
4 - 1.46" / 37.0 mm guns (1x4 guns), 1.55lbs / 0.70kg shells, 1944 Model
Anti-aircraft guns in deck mount
on centreline aft, all raised guns - superfiring
4 - 0.55" / 14.0 mm guns in single mounts, 0.08lbs / 0.04kg shells, 1944 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 119 lbs / 54 kg
Shells per gun, main battery: 450
2 - 20.9" / 530 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.18" / 30 mm 0.79" / 20 mm -
2nd: 0.79" / 20 mm 0.79" / 20 mm -
3rd: 0.39" / 10 mm - -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 13,794 shp / 10,290 Kw = 27.90 kts
Range 3,000nm at 15.00 kts
Bunker at max displacement = 165 tons

Complement:
101 - 132

Cost:
£0.648 million / $2.593 million

Distribution of weights at normal displacement:
Armament: 12 tons, 1.0 %
Armour: 10 tons, 0.8 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 10 tons, 0.8 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 352 tons, 29.5 %
Hull, fittings & equipment: 565 tons, 47.3 %
Fuel, ammunition & stores: 146 tons, 12.2 %
Miscellaneous weights: 110 tons, 9.2 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,409 lbs / 639 Kg = 46.2 x 3.9 " / 100 mm shells or 0.6 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 1.1 ft / 0.3 m
Roll period: 13.0 seconds
Steadiness - As gun platform (Average = 50 %): 72 %
- Recoil effect (Restricted arc if above 1.00): 0.15
Seaboat quality (Average = 1.00): 1.29

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.402
Length to Beam Ratio: 9.50 : 1
'Natural speed' for length: 20.50 kts
Power going to wave formation at top speed: 61 %
Trim (Max stability = 0, Max steadiness = 100): 56
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 19.69 ft / 6.00 m
- Forecastle (20 %): 16.40 ft / 5.00 m
- Mid (35 %): 13.12 ft / 4.00 m
- Quarterdeck (15 %): 11.48 ft / 3.50 m
- Stern: 11.48 ft / 3.50 m
- Average freeboard: 13.63 ft / 4.16 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 115.6 %
- Above water (accommodation/working, high = better): 137.7 %
Waterplane Area: 6,542 Square feet or 608 Square metres
Displacement factor (Displacement / loading): 130 %
Structure weight / hull surface area: 48 lbs/sq ft or 232 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.88
- Longitudinal: 3.03
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

Breakdown of Miscellaneous Weights:
- 33 tons for electronics
- 5 tons for hydrophones and ASDIC
- 17 tons for depth charges (64x573-lb bombs)
- 25 tons for ASW mortar
- 30 tons for HVAC
110 tons total miscellaneous weight

Ships in Class:
- SKR-01: Laid down January 1944
- SKR-02: Laid down January 1944
- SKR-03: Laid down January 1944
- SKR-04: Laid down January 1944
- SKR-05: Laid down January 1944
- SKR-06: Laid down January 1944
- SKR-07: Laid down July 1944
- SKR-08: Laid down July 1944
- SKR-09: Laid down July 1944
- SKR-10: Laid down July 1944
- SKR-11: Laid down July 1944
- SKR-12: Laid down July 1944
- SKR-13: Laid down January 1945
- SKR-14: Laid down January 1945
- SKR-15: Laid down January 1945
- SKR-16: Laid down January 1945
- SKR-17: Laid down January 1945
- SKR-18: Laid down January 1945
- SKR-19: Laid down July 1945
- SKR-20: Laid down July 1945
- SKR-21: Laid down July 1945
- SKR-22: Laid down July 1945
- SKR-23: Laid down July 1945
- SKR-24: Laid down July 1945