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Description
latest ship design I have made that goes with my AU nation Sieran. This type of destroyer is considered to be the most common type in service at the start of the Second World War period with 12 vessels completed by 1939.

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R.S.N. Tago, United Socialist States of Sieran Tago Class Destroyer laid down 1937

Displacement:
2,990 t light; 3,090 t standard; 3,498 t normal; 3,825 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(447.07 ft / 433.07 ft) x 39.37 ft x (15.75 / 16.77 ft)
(136.27 m / 132.00 m) x 12.00 m x (4.80 / 5.11 m)

Armament:
5 - 5.00" / 127 mm 60.0 cal guns - 68.45lbs / 31.05kg shells, 120 per gun
Dual purpose guns in deck and hoist mounts, 1937 Model
5 x Single mounts on centreline ends, majority aft
3 raised mounts - superfiring
8 - 1.46" / 37.0 mm 40.0 cal guns - 1.48lbs / 0.67kg shells, 800 per gun
Anti-air guns in deck mounts, 1937 Model
4 x Twin mounts on centreline, evenly spread
4 raised mounts
12 - 0.79" / 20.0 mm 45.0 cal guns - 0.24lbs / 0.11kg shells, 1,200 per gun
Anti-air guns in deck mounts, 1937 Model
12 x Single mounts on sides, evenly spread
12 raised mounts
Weight of broadside 357 lbs / 162 kg
Main Torpedoes
8 - 20.9" / 530 mm, 26.25 ft / 8.00 m torpedoes - 1.721 t each, 13.765 t total
In 2 sets of deck mounted centre rotating tubes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.50" / 38 mm 0.70" / 18 mm -
2nd: 0.50" / 13 mm - -
3rd: 0.20" / 5 mm - -

- Conning towers: Forward 1.57" / 40 mm, Aft 0.00" / 0 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 65,076 shp / 48,547 Kw = 35.00 kts
Range 4,000nm at 18.00 kts
Bunker at max displacement = 735 tons

Complement:
226 - 295

Cost:
£2.124 million / $8.496 million

Distribution of weights at normal displacement:
Armament: 162 tons, 4.6 %
- Guns: 134 tons, 3.8 %
- Weapons: 28 tons, 0.8 %
Armour: 39 tons, 1.1 %
- Armament: 32 tons, 0.9 %
- Conning Tower: 8 tons, 0.2 %
Machinery: 1,716 tons, 49.0 %
Hull, fittings & equipment: 1,013 tons, 29.0 %
Fuel, ammunition & stores: 508 tons, 14.5 %
Miscellaneous weights: 60 tons, 1.7 %
- Hull below water: 10 tons
- Hull above water: 50 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
999 lbs / 453 Kg = 16.0 x 5.0 " / 127 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.01
Metacentric height 1.3 ft / 0.4 m
Roll period: 14.7 seconds
Steadiness - As gun platform (Average = 50 %): 69 %
- Recoil effect (Restricted arc if above 1.00): 0.47
Seaboat quality (Average = 1.00): 0.85

Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and small transom stern
Block coefficient (normal/deep): 0.456 / 0.468
Length to Beam Ratio: 11.00 : 1
'Natural speed' for length: 22.30 kts
Power going to wave formation at top speed: 65 %
Trim (Max stability = 0, Max steadiness = 100): 81
Bow angle (Positive = bow angles forward): 18.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 35.00 %, 22.90 ft / 6.98 m, 18.73 ft / 5.71 m
- Forward deck: 15.00 %, 18.73 ft / 5.71 m, 18.73 ft / 5.71 m
- Aft deck: 35.00 %, 11.48 ft / 3.50 m, 11.48 ft / 3.50 m
- Quarter deck: 15.00 %, 11.48 ft / 3.50 m, 11.48 ft / 3.50 m
- Average freeboard: 15.69 ft / 4.78 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 171.7 %
- Above water (accommodation/working, high = better): 103.8 %
Waterplane Area: 11,185 Square feet or 1,039 Square metres
Displacement factor (Displacement / loading): 85 %
Structure weight / hull surface area: 52 lbs/sq ft or 256 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.69
- Longitudinal: 1.50
- Overall: 0.75
Cramped machinery, storage, compartmentation space
Adequate accommodation and workspace room
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

Description
latest ship design I have made that goes with my AU nation Sieran. This type of destroyer is considered to be the most common type in service at the start of the Second World War period with 12 vessels completed by 1939.

---

R.S.N. Tago, United Socialist States of Sieran Tago Class Destroyer laid down 1937

Displacement:
2,990 t light; 3,090 t standard; 3,498 t normal; 3,825 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(447.07 ft / 433.07 ft) x 39.37 ft x (15.75 / 16.77 ft)
(136.27 m / 132.00 m) x 12.00 m x (4.80 / 5.11 m)

Armament:
5 - 5.00" / 127 mm 60.0 cal guns - 68.45lbs / 31.05kg shells, 120 per gun
Dual purpose guns in deck and hoist mounts, 1937 Model
5 x Single mounts on centreline ends, majority aft
3 raised mounts - superfiring
8 - 1.46" / 37.0 mm 40.0 cal guns - 1.48lbs / 0.67kg shells, 800 per gun
Anti-air guns in deck mounts, 1937 Model
4 x Twin mounts on centreline, evenly spread
4 raised mounts
12 - 0.79" / 20.0 mm 45.0 cal guns - 0.24lbs / 0.11kg shells, 1,200 per gun
Anti-air guns in deck mounts, 1937 Model
12 x Single mounts on sides, evenly spread
12 raised mounts
Weight of broadside 357 lbs / 162 kg
Main Torpedoes
8 - 20.9" / 530 mm, 26.25 ft / 8.00 m torpedoes - 1.721 t each, 13.765 t total
In 2 sets of deck mounted centre rotating tubes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.50" / 38 mm 0.70" / 18 mm -
2nd: 0.50" / 13 mm - -
3rd: 0.20" / 5 mm - -

- Conning towers: Forward 1.57" / 40 mm, Aft 0.00" / 0 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 65,076 shp / 48,547 Kw = 35.00 kts
Range 4,000nm at 18.00 kts
Bunker at max displacement = 735 tons

Complement:
226 - 295

Cost:
£2.124 million / $8.496 million

Distribution of weights at normal displacement:
Armament: 162 tons, 4.6 %
- Guns: 134 tons, 3.8 %
- Weapons: 28 tons, 0.8 %
Armour: 39 tons, 1.1 %
- Armament: 32 tons, 0.9 %
- Conning Tower: 8 tons, 0.2 %
Machinery: 1,716 tons, 49.0 %
Hull, fittings & equipment: 1,013 tons, 29.0 %
Fuel, ammunition & stores: 508 tons, 14.5 %
Miscellaneous weights: 60 tons, 1.7 %
- Hull below water: 10 tons
- Hull above water: 50 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
999 lbs / 453 Kg = 16.0 x 5.0 " / 127 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.01
Metacentric height 1.3 ft / 0.4 m
Roll period: 14.7 seconds
Steadiness - As gun platform (Average = 50 %): 69 %
- Recoil effect (Restricted arc if above 1.00): 0.47
Seaboat quality (Average = 1.00): 0.85

Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and small transom stern
Block coefficient (normal/deep): 0.456 / 0.468
Length to Beam Ratio: 11.00 : 1
'Natural speed' for length: 22.30 kts
Power going to wave formation at top speed: 65 %
Trim (Max stability = 0, Max steadiness = 100): 81
Bow angle (Positive = bow angles forward): 18.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 35.00 %, 22.90 ft / 6.98 m, 18.73 ft / 5.71 m
- Forward deck: 15.00 %, 18.73 ft / 5.71 m, 18.73 ft / 5.71 m
- Aft deck: 35.00 %, 11.48 ft / 3.50 m, 11.48 ft / 3.50 m
- Quarter deck: 15.00 %, 11.48 ft / 3.50 m, 11.48 ft / 3.50 m
- Average freeboard: 15.69 ft / 4.78 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 171.7 %
- Above water (accommodation/working, high = better): 103.8 %
Waterplane Area: 11,185 Square feet or 1,039 Square metres
Displacement factor (Displacement / loading): 85 %
Structure weight / hull surface area: 52 lbs/sq ft or 256 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.69
- Longitudinal: 1.50
- Overall: 0.75
Cramped machinery, storage, compartmentation space
Adequate accommodation and workspace room
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather