Public Information : 4,250 tons, 150m x 16m x 4.5m, 30knts, 6 x 152mm
Class Names :
CL-1 Wandelaar, CL-2 Del Commune, CL-3 West Diep,
image by Desertfox
Australian Ballarat-B Design, Belgium Escort Cruiser laid down 1935
Displacement:
3,957 t light; 4,224 t standard; 5,014 t normal; 5,647 t full load
Dimensions: Length overall / water x beam x draught
511.47 ft / 500.00 ft x 52.00 ft x 15.00 ft (normal load)
155.90 m / 152.40 m x 15.85 m x 4.57 m
Armament:
6 - 5.98" / 152 mm guns (2x3 guns), 110.23lbs / 50.00kg shells, 1923 Model
Breech loading guns in turrets (on barbettes)
on centreline, all forward, 1 raised mount - superfiring
8 - 4.70" / 119 mm guns in single mounts, 51.91lbs / 23.55kg shells, 1935 Model
Dual purpose guns in deck mounts
on side, all amidships, 4 raised mounts - superfiring
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1930 Model
Anti-aircraft guns in deck mounts
on centreline, evenly spread
20 - 0.79" / 20.0 mm guns (10x2 guns), 0.24lbs / 0.11kg shells, 1927 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 1,094 lbs / 496 kg
Shells per gun, main battery: 250
12 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2.90" / 74 mm 240.00 ft / 73.15 m 9.00 ft / 2.74 m
Ends: Unarmoured
Main Belt covers 74 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.90" / 74 mm 1.20" / 30 mm 2.00" / 51 mm
2nd: 1.20" / 30 mm - -
3rd: 0.25" / 6 mm - -
4th: 0.25" / 6 mm - -
- Armour deck: 1.20" / 30 mm
Machinery:
Coal and oil fired boilers, steam turbines,
Geared drive, 2 shafts, 19,343 shp / 14,430 Kw = 24.20 kts
Range 12,000nm at 12.00 kts
Bunker at max displacement = 1,423 tons (90% coal)
Complement:
297 - 387
Cost:
£1.707 million / $6.826 million
Distribution of weights at normal displacement:
Armament: 134 tons, 2.7 %
Armour: 749 tons, 14.9 %
- Belts: 275 tons, 5.5 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 106 tons, 2.1 %
- Armour Deck: 368 tons, 7.3 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 598 tons, 11.9 %
Hull, fittings & equipment: 2,025 tons, 40.4 %
Fuel, ammunition & stores: 1,057 tons, 21.1 %
Miscellaneous weights: 450 tons, 9.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
8,658 lbs / 3,927 Kg = 80.8 x 6.0 " / 152 mm shells or 1.8 torpedoes
Stability (Unstable if below 1.00): 1.24
Metacentric height 2.8 ft / 0.8 m
Roll period: 13.1 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.33
Seaboat quality (Average = 1.00): 1.43
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.450
Length to Beam Ratio: 9.62 : 1
'Natural speed' for length: 22.36 kts
Power going to wave formation at top speed: 43 %
Trim (Max stability = 0, Max steadiness = 100): 50
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: 24.60 ft / 7.50 m
- Forecastle (20 %): 14.00 ft / 4.27 m
- Mid (50 %): 14.00 ft / 4.27 m (12.00 ft / 3.66 m aft of break)
- Quarterdeck (15 %): 12.00 ft / 3.66 m
- Stern: 12.00 ft / 3.66 m
- Average freeboard: 13.85 ft / 4.22 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 71.5 %
- Above water (accommodation/working, high = better): 93.7 %
Waterplane Area: 16,585 Square feet or 1,541 Square metres
Displacement factor (Displacement / loading): 144 %
Structure weight / hull surface area: 83 lbs/sq ft or 404 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.99
- Longitudinal: 1.09
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
The 152mm guns are Koninklijke Artillerie, the 4.7" guns are ordered from Australia, the 37mm are Schneiders license-built by FRC (Fonderie Royale de Cannons), while the 20mm is Madsen
Edit : 2/7/12 : The miscellaneous weight represents additional CiC room, early radar (1937ish Dutch), and 4-5 seaplanes [2 fighter, 2 recon], 4 in hanger, 1 on catapult.