Maha Chakrkri (DP+Mount armor+Hoists+Additional light AA), Thai Light Cruiser AA refit laid down 1914
Displacement:
3,600 t light; 3,750 t standard; 4,532 t normal; 5,157 t full load
Dimensions: Length overall / water x beam x draught
420.00 ft / 420.00 ft x 41.50 ft x 16.25 ft (normal load)
128.02 m / 128.02 m x 12.65 m x 4.95 m
Armament:
6 - 4.72" / 120 mm guns (4 mounts), 52.72lbs / 23.91kg shells, 1936 Model
Dual purpose guns in deck mounts with hoists
on centreline, evenly spread, 2 raised mounts
Aft Main mounts separated by engine room
4 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.91kg shells, 1936 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships
8 - 2.24" / 57.0 mm guns (4x2 guns), 5.65lbs / 2.56kg shells, 1935 Model
Dual purpose guns in deck mounts
on centreline, evenly spread, all raised mounts
24 - 0.79" / 20.0 mm guns (12x2 guns), 0.24lbs / 0.11kg shells, 1932 Model
Breech loading guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 578 lbs / 262 kg
Shells per gun, main battery: 166
6 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.00" / 76 mm 330.00 ft / 100.58 m 8.00 ft / 2.44 m
Ends: 2.50" / 64 mm 90.00 ft / 27.43 m 8.00 ft / 2.44 m
Main Belt covers 121 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.00" / 51 mm 0.50" / 13 mm 1.00" / 25 mm
2nd: 1.00" / 25 mm 0.50" / 13 mm 1.00" / 25 mm
3rd: 0.50" / 13 mm - -
4th: 0.50" / 13 mm - -
- Armour deck: 1.00" / 25 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 38,407 shp / 28,651 Kw = 28.50 kts
Range 7,070nm at 15.00 kts
Bunker at max displacement = 1,407 tons
Complement:
276 - 359
Cost:
£0.501 million / $2.005 million
Distribution of weights at normal displacement:
Armament: 72 tons, 1.6 %
Armour: 654 tons, 14.4 %
- Belts: 388 tons, 8.6 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 39 tons, 0.9 %
- Armour Deck: 227 tons, 5.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 1,479 tons, 32.6 %
Hull, fittings & equipment: 1,384 tons, 30.5 %
Fuel, ammunition & stores: 932 tons, 20.6 %
Miscellaneous weights: 10 tons, 0.2 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
3,496 lbs / 1,586 Kg = 66.3 x 4.7 " / 120 mm shells or 0.8 torpedoes
Stability (Unstable if below 1.00): 1.34
Metacentric height 2.2 ft / 0.7 m
Roll period: 11.7 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.35
Seaboat quality (Average = 1.00): 1.19
Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.560
Length to Beam Ratio: 10.12 : 1
'Natural speed' for length: 20.49 kts
Power going to wave formation at top speed: 60 %
Trim (Max stability = 0, Max steadiness = 100): 50
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: 24.00 ft / 7.32 m
- Forecastle (30 %): 22.00 ft / 6.71 m (14.00 ft / 4.27 m aft of break)
- Mid (50 %): 14.00 ft / 4.27 m
- Quarterdeck (15 %): 14.00 ft / 4.27 m
- Stern: 14.00 ft / 4.27 m
- Average freeboard: 16.64 ft / 5.07 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 118.8 %
- Above water (accommodation/working, high = better): 90.5 %
Waterplane Area: 12,279 Square feet or 1,141 Square metres
Displacement factor (Displacement / loading): 108 %
Structure weight / hull surface area: 61 lbs/sq ft or 300 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.84
- Longitudinal: 1.75
- Overall: 0.90
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Cost: 900t
Time: 3.15 months