Public information : 500tons, 60m x 18 m x 3m
2x 3", 18knts
Class Names : MS-1, MS-2, etc.
Bulgarian modified Struma design, Belgium Minesweeper laid down 1936
MS-1, Belgium Minesweeper laid down 1936
Displacement:
480 t light; 495 t standard; 579 t normal; 646 t full load
Dimensions: Length overall / water x beam x draught
200.53 ft / 194.00 ft x 27.00 ft x 9.00 ft (normal load)
61.12 m / 59.13 m x 8.23 m x 2.74 m
Armament:
2 - 2.95" / 75.0 mm guns (1x2 guns), 12.87lbs / 5.84kg shells, 1933 Model
Dual purpose guns in deck mount
on centreline forward
2 - 1.46" / 37.0 mm guns (1x2 guns), 1.55lbs / 0.70kg shells, 1930 Model
Anti-aircraft guns in deck mount
on centreline aft
2 - 0.79" / 20.0 mm guns (1x2 guns), 0.24lbs / 0.11kg shells, 1917 Model
Anti-aircraft guns in deck mount
on centreline forward, all raised guns - superfiring
4 - 0.52" / 13.2 mm guns in single mounts, 0.07lbs / 0.03kg shells, 1928 Model
Machine guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 30 lbs / 13 kg
Shells per gun, main battery: 200
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.79" / 20 mm 0.39" / 10 mm -
2nd: 0.39" / 10 mm - -
- Conning tower: 0.98" / 25 mm
Machinery:
Coal and oil fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 1,110 ihp / 828 Kw = 15.00 kts
Range 5,000nm at 10.50 kts
Bunker at max displacement = 151 tons (90% coal)
Complement:
58 - 76
Cost:
£0.155 million / $0.619 million
Distribution of weights at normal displacement:
Armament: 4 tons, 0.6 %
Armour: 4 tons, 0.6 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 2 tons, 0.4 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 1 tons, 0.3 %
Machinery: 67 tons, 11.6 %
Hull, fittings & equipment: 226 tons, 38.9 %
Fuel, ammunition & stores: 99 tons, 17.1 %
Miscellaneous weights: 180 tons, 31.1 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,083 lbs / 491 Kg = 84.1 x 3.0 " / 75 mm shells or 0.7 torpedoes
Stability (Unstable if below 1.00): 1.08
Metacentric height 0.8 ft / 0.2 m
Roll period: 12.6 seconds
Steadiness - As gun platform (Average = 50 %): 58 %
- Recoil effect (Restricted arc if above 1.00): 0.06
Seaboat quality (Average = 1.00): 2.00
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.430
Length to Beam Ratio: 7.19 : 1
'Natural speed' for length: 13.93 kts
Power going to wave formation at top speed: 46 %
Trim (Max stability = 0, Max steadiness = 100): 29
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: 14.00 ft / 4.27 m
- Forecastle (20 %): 11.00 ft / 3.35 m
- Mid (50 %): 11.00 ft / 3.35 m
- Quarterdeck (15 %): 11.00 ft / 3.35 m
- Stern: 11.00 ft / 3.35 m
- Average freeboard: 11.24 ft / 3.43 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 77.4 %
- Above water (accommodation/working, high = better): 118.8 %
Waterplane Area: 3,289 Square feet or 306 Square metres
Displacement factor (Displacement / loading): 166 %
Structure weight / hull surface area: 36 lbs/sq ft or 177 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.89
- Longitudinal: 4.64
- Overall: 1.05
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
The 75mm is Semi-Auto by Bourges-FRC (Fonderie Royale de Cannons), and the 37mm are by Schneiders license-built by FRC, while the 20mm is Madsen and the 13.2mm is FN-Browning.
Ed: 2/7/12 : Miscellaneous weight is intended to represent both minesweepeing and degaussing gear.
Hydrophones, 2 K-guns, 1 rail and storage for 40 DCs is also fitted.
This post has been edited 3 times, last edit by "Kaiser Kirk" (Feb 8th 2012, 7:56am)