WesWorld

Zephir (Zephyr) class, French Sloop laid down 1936

Displacement:
1,171 t light; 1,269 t standard; 1,522 t normal; 1,725 t full load

Dimensions: Length overall / water x beam x draught
328.64 ft / 318.24 ft x 33.79 ft x 10.01 ft (normal load)
100.17 m / 97.00 m x 10.30 m x 3.05 m

Armament:
6 - 4.72" / 120 mm guns (3x2 guns), 61.73lbs / 28.00kg shells, 1936 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
4 - 1.57" / 40.0 mm guns (1x4 guns), 1.95lbs / 0.89kg shells, 1936 Model
Anti-aircraft guns in a deck mount with hoist
on centreline aft, all raised guns - superfiring
8 - 1.57" / 40.0 mm guns (4x2 guns), 1.95lbs / 0.89kg shells, 1936 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread
4 - 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 394 lbs / 179 kg
Shells per gun, main battery: 300
4 - 20.9" / 530 mm above water torpedoes

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 -
3rd: 0.98" / 25 mm 0.20" / 5 mm -

- Conning tower: 1.18" / 30 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 10,054 shp / 7,500 Kw = 23.61 kts
Range 10,800nm at 12.00 kts
Bunker at max displacement = 455 tons

Complement:
121 - 158

Cost:
£0.613 million / $2.450 million

Distribution of weights at normal displacement:
Armament: 43 tons, 2.8 %
Armour: 16 tons, 1.0 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 12 tons, 0.8 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 3 tons, 0.2 %
Machinery: 282 tons, 18.5 %
Hull, fittings & equipment: 730 tons, 48.0 %
Fuel, ammunition & stores: 352 tons, 23.1 %
Miscellaneous weights: 100 tons, 6.6 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2,330 lbs / 1,057 Kg = 44.2 x 4.7 " / 120 mm shells or 0.8 torpedoes
Stability (Unstable if below 1.00): 1.14
Metacentric height 1.3 ft / 0.4 m
Roll period: 12.5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.78
Seaboat quality (Average = 1.00): 1.51

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.500
Length to Beam Ratio: 9.51 : 1
'Natural speed' for length: 17.84 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 46
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22.31 ft / 6.80 m
- Forecastle (25 %): 17.06 ft / 5.20 m
- Mid (50 %): 17.06 ft / 5.20 m (8.86 ft / 2.70 m aft of break)
- Quarterdeck (15 %): 8.86 ft / 2.70 m
- Stern: 10.17 ft / 3.10 m
- Average freeboard: 13.58 ft / 4.14 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 92.0 %
- Above water (accommodation/working, high = better): 103.4 %
Waterplane Area: 7,165 Square feet or 666 Square metres
Displacement factor (Displacement / loading): 149 %
Structure weight / hull surface area: 58 lbs/sq ft or 282 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.90
- Longitudinal: 2.60
- 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
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

ASDIC: 10 tons
Depth charges: 30 tons
Misc weight: 60 tons

Units in Class: 8