Thonburi, Enter country Enter ship type laid down 1933
Displacement:
11 451 t light; 12 062 t standard; 13 547 t normal; 14 735 t full load
Dimensions: Length overall / water x beam x draught
604,08 ft / 598,10 ft x 68,90 ft x 21,00 ft (normal load)
184,12 m / 182,30 m x 21,00 m x 6,40 m
Armament:
4 - 14,02" / 356 mm guns (2x2 guns), 1 376,64lbs / 624,43kg shells, 1933 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
Main guns limited to end-on fire
8 - 5,00" / 127 mm guns in single mounts, 62,50lbs / 28,35kg shells, 1933 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships
12 - 0,98" / 25,0 mm guns (4x3 guns), 0,48lbs / 0,22kg shells, 1933 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 6 012 lbs / 2 727 kg
Shells per gun, main battery: 100
12 - 24,0" / 610 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4,72" / 120 mm 333,01 ft / 101,50 m 13,45 ft / 4,10 m
Ends: Unarmoured
Upper: 2,76" / 70 mm 131,23 ft / 40,00 m 6,56 ft / 2,00 m
Main Belt covers 86% of normal length
Main belt does not fully cover magazines and engineering spaces
- Torpedo Bulkhead:
1,57" / 40 mm 557,74 ft / 170,00 m 16,40 ft / 5,00 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 10,2" / 260 mm 4,72" / 120 mm 9,06" / 230 mm
2nd: 1,18" / 30 mm - -
- Armour deck: 1,38" / 35 mm, Conning tower: 7,87" / 200 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 3 shafts, 39 856 shp / 29 733 Kw = 25,00 kts
Range 9 900nm at 15,00 kts
Bunker at max displacement = 2 673 tons
Complement:
627 - 816
Cost:
£5,648 million / $22,590 million
Distribution of weights at normal displacement:
Armament: 752 tons, 5,5%
Armour: 3 298 tons, 24,3%
- Belts: 1 051 tons, 7,8%
- Torpedo bulkhead: 533 tons, 3,9%
- Armament: 886 tons, 6,5%
- Armour Deck: 732 tons, 5,4%
- Conning Tower: 96 tons, 0,7%
Machinery: 1 161 tons, 8,6%
Hull, fittings & equipment: 6 240 tons, 46,1%
Fuel, ammunition & stores: 2 096 tons, 15,5%
Miscellaneous weights: 0 tons, 0,0%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
22 825 lbs / 10 353 Kg = 16,6 x 14,0 " / 356 mm shells or 3,9 torpedoes
Stability (Unstable if below 1.00): 1,10
Metacentric height 3,5 ft / 1,1 m
Roll period: 15,6 seconds
Steadiness - As gun platform (Average = 50 %): 80 %
- Recoil effect (Restricted arc if above 1.00): 1,13
Seaboat quality (Average = 1.00): 1,59
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,548
Length to Beam Ratio: 8,68 : 1
'Natural speed' for length: 24,46 kts
Power going to wave formation at top speed: 46 %
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: 22,31 ft / 6,80 m
- Forecastle (20%): 20,67 ft / 6,30 m
- Mid (50%): 20,67 ft / 6,30 m
- Quarterdeck (15%): 20,67 ft / 6,30 m
- Stern: 20,67 ft / 6,30 m
- Average freeboard: 20,80 ft / 6,34 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 98,5%
- Above water (accommodation/working, high = better): 132,9%
Waterplane Area: 28 704 Square feet or 2 667 Square metres
Displacement factor (Displacement / loading): 116%
Structure weight / hull surface area: 143 lbs/sq ft or 700 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,95
- Longitudinal: 1,54
- Overall: 1,00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
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