Laid down in 1943, the USS Tangier was the first of its class. This ship was designed to bolster the US's defenses in the Pacific.
USS Tangier laid down Q3/43.
Tangier, United States Seaplane Tender laid down 1943
Displacement:
6,350 t light; 6,572 t standard; 9,049 t normal; 11,030 t full load
Dimensions: Length overall / water x beam x draught
492.00 ft / 492.00 ft x 69.50 ft x 22.00 ft (normal load)
149.96 m / 149.96 m x 21.18 m x 6.71 m
Armament:
4 - 5.00" / 127 mm guns (2x2 guns), 55.17lbs / 25.02kg shells, 1943 Model
Dual purpose guns in deck mounts with hoists
on centreline, all forward
8 - 1.50" / 38.1 mm guns (4x2 guns), 1.69lbs / 0.77kg shells, 1943 Model
Anti-aircraft guns in deck mounts
on side, all amidships
4 - 0.75" / 19.1 mm guns in single mounts, 0.21lbs / 0.10kg shells, 1943 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 235 lbs / 107 kg
Shells per gun, main battery: 300
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 7,723 shp / 5,761 Kw = 17.00 kts
Range 40,000nm at 12.00 kts
Bunker at max displacement = 4,458 tons
Complement:
463 - 603
Cost:
£1.819 million / $7.277 million
Distribution of weights at normal displacement:
Armament: 33 tons, 0.4 %
Machinery: 199 tons, 2.2 %
Hull, fittings & equipment: 2,643 tons, 29.2 %
Fuel, ammunition & stores: 2,698 tons, 29.8 %
Miscellaneous weights: 3,475 tons, 38.4 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
18,488 lbs / 8,386 Kg = 295.8 x 5.0 " / 127 mm shells or 3.4 torpedoes
Stability (Unstable if below 1.00): 1.15
Metacentric height 3.8 ft / 1.1 m
Roll period: 15.1 seconds
Steadiness - As gun platform (Average = 50 %): 57 %
- Recoil effect (Restricted arc if above 1.00): 0.03
Seaboat quality (Average = 1.00): 1.73
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.421
Length to Beam Ratio: 7.08 : 1
'Natural speed' for length: 22.18 kts
Power going to wave formation at top speed: 30 %
Trim (Max stability = 0, Max steadiness = 100): 33
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 24.40 ft / 7.44 m
- Forecastle (20 %): 18.00 ft / 5.49 m
- Mid (50 %): 15.53 ft / 4.73 m
- Quarterdeck (15 %): 12.00 ft / 3.66 m
- Stern: 15.53 ft / 4.73 m
- Average freeboard: 16.02 ft / 4.88 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 53.0 %
- Above water (accommodation/working, high = better): 133.0 %
Waterplane Area: 21,333 Square feet or 1,982 Square metres
Displacement factor (Displacement / loading): 219 %
Structure weight / hull surface area: 85 lbs/sq ft or 414 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.48
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
This post has been edited 1 times, last edit by "TheCanadian" (Jun 25th 2013, 4:32am)