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USS Admirable laid down 1943
USS Adopt laid down 1943
USS Advocate laid down 1943
USS Agent laid down 1943
USS Alarm laid down 1943
USS Alchemy laid down 1943
USS Apex laid down 1943
USS Alarm laid down 1943

more to be laid down in 1944

Admirable, United States Minesweeper laid down 1943

Displacement:
455 t light; 473 t standard; 580 t normal; 667 t full load

Dimensions: Length overall / water x beam x draught
183.95 ft / 180.00 ft x 33.00 ft x 9.00 ft (normal load)
56.07 m / 54.86 m x 10.06 m x 2.74 m

Armament:
2 - 3.00" / 76.2 mm guns (1x2 guns), 13.50lbs / 6.12kg shells, 1943 Model
Dual purpose guns in deck mount
on centreline forward
6 - 1.10" / 27.9 mm guns (3x2 guns), 0.67lbs / 0.30kg shells, 1943 Model
Anti-aircraft guns in deck mounts
on side, all amidships
Weight of broadside 31 lbs / 14 kg
Shells per gun, main battery: 300

Machinery:
Diesel Internal combustion generators,
Electric motors, 2 shafts, 2,371 shp / 1,769 Kw = 18.00 kts
Range 8,500nm at 12.00 kts
Bunker at max displacement = 194 tons

Complement:
58 - 76

Cost:
£0.182 million / $0.727 million

Distribution of weights at normal displacement:
Armament: 4 tons, 0.7 %
Machinery: 61 tons, 10.5 %
Hull, fittings & equipment: 209 tons, 36.0 %
Fuel, ammunition & stores: 125 tons, 21.6 %
Miscellaneous weights: 181 tons, 31.2 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,090 lbs / 494 Kg = 80.7 x 3.0 " / 76 mm shells or 0.8 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 %): 64 %
- Recoil effect (Restricted arc if above 1.00): 0.03
Seaboat quality (Average = 1.00): 1.28

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.380
Length to Beam Ratio: 5.45 : 1
'Natural speed' for length: 13.42 kts
Power going to wave formation at top speed: 59 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 14.76 ft / 4.50 m
- Forecastle (20 %): 9.39 ft / 2.86 m
- Mid (50 %): 9.39 ft / 2.86 m
- Quarterdeck (15 %): 9.39 ft / 2.86 m
- Stern: 9.39 ft / 2.86 m
- Average freeboard: 9.82 ft / 2.99 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 74.6 %
- Above water (accommodation/working, high = better): 111.7 %
Waterplane Area: 3,622 Square feet or 336 Square metres
Displacement factor (Displacement / loading): 174 %
Structure weight / hull surface area: 38 lbs/sq ft or 188 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.88
- Longitudinal: 3.35
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Good seaboat, rides out heavy weather easily