Groenendael, Belgium Destroyer Tender laid down 1941
Displacement:
9,775 t light; 10,536 t standard; 13,449 t normal; 15,779 t full load
Dimensions: Length overall / water x beam x draught
544.47 ft / 524.93 ft x 68.90 ft (Bulges 75.46 ft) x 17.55 ft (normal load)
165.95 m / 160.00 m x 21.00 m (Bulges 23.00 m) x 5.35 m
Armament:
8 - 4.70" / 119 mm guns (4x2 guns), 51.91lbs / 23.55kg shells, 1936 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread, 2 raised mounts - superfiring
32 - 1.46" / 37.0 mm guns (16x2 guns), 1.55lbs / 0.70kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 8 raised mounts
Weight of broadside 465 lbs / 211 kg
Shells per gun, main battery: 1,775
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 1.97" / 50 mm 341.21 ft / 104.00 m 16.01 ft / 4.88 m
Ends: Unarmoured
Main Belt covers 100 % of normal length
- Torpedo Bulkhead and Bulges:
0.98" / 25 mm 341.21 ft / 104.00 m 16.21 ft / 4.94 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.39" / 10 mm - 0.98" / 25 mm
2nd: 0.39" / 10 mm - -
- Armour deck: 0.98" / 25 mm, Conning tower: 0.98" / 25 mm
Machinery:
Coal and oil fired boilers, steam turbines,
Geared drive, 2 shafts, 28,853 shp / 21,524 Kw = 22.25 kts
Range 22,320nm at 14.00 kts
Bunker at max displacement = 5,243 tons (25% coal)
Complement:
623 - 811
Cost:
£3.092 million / $12.368 million
Distribution of weights at normal displacement:
Armament: 58 tons, 0.4 %
Armour: 1,205 tons, 9.0 %
- Belts: 463 tons, 3.4 %
- Torpedo bulkhead: 201 tons, 1.5 %
- Armament: 11 tons, 0.1 %
- Armour Deck: 517 tons, 3.8 %
- Conning Tower: 12 tons, 0.1 %
Machinery: 780 tons, 5.8 %
Hull, fittings & equipment: 3,562 tons, 26.5 %
Fuel, ammunition & stores: 3,674 tons, 27.3 %
Miscellaneous weights: 4,170 tons, 31.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
23,930 lbs / 10,854 Kg = 461.0 x 4.7 " / 119 mm shells or 4.5 torpedoes
Stability (Unstable if below 1.00): 1.22
Metacentric height 4.1 ft / 1.2 m
Roll period: 15.7 seconds
Steadiness - As gun platform (Average = 50 %): 77 %
- Recoil effect (Restricted arc if above 1.00): 0.05
Seaboat quality (Average = 1.00): 1.54
Hull form characteristics:
Hull has raised forecastle, raised quarterdeck
Block coefficient: 0.677
Length to Beam Ratio: 6.96 : 1
'Natural speed' for length: 22.91 kts
Power going to wave formation at top speed: 48 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 13.12 ft / 4.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 23.92 ft / 7.29 m
- Forecastle (20 %): 23.92 ft / 7.29 m (15.91 ft / 4.85 m aft of break)
- Mid (50 %): 15.91 ft / 4.85 m
- Quarterdeck (15 %): 23.92 ft / 7.29 m (15.91 ft / 4.85 m before break)
- Stern: 23.92 ft / 7.29 m
- Average freeboard: 18.71 ft / 5.70 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 85.2 %
- Above water (accommodation/working, high = better): 138.1 %
Waterplane Area: 28,396 Square feet or 2,638 Square metres
Displacement factor (Displacement / loading): 182 %
Structure weight / hull surface area: 88 lbs/sq ft or 430 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.99
- Longitudinal: 1.06
- 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
Designed to be a tender for the overseas deployment of the 1939 series of destroyers.
A 9-ship Destroyer Squadron will have a maximum bunkerage of 9x 445tons=4005 tons, and carry 12,600 rounds of 4.7" ammunition. The tender has sufficient stores to completely refuel and rearm the squadron leaving 1484 tons fuel and 200 shells/gun for itself.
3,012 tons are reserved for Quarters for 2/3rds of the Destroyer crews- a berth per man. 2t per enlisted, 4t per officer.
75 tons for a catapult and 2 aircraft
144 tons for 72 torpedoes (1 reload per DD)
50 ton diesel generator + fuel for emergency power.
250 tons are reserved for an infirmary
450 tons for machine shops
20 tons air conditioning.
80 tons electronics
89 tons spare