Apollonis Class
- Apollonis Laid down April 1942, Completed March 1943
- Cephisso Laid down April 1942, Completed March 1943
- Borysthenis Laid down January 1944
- Hypate Laid down January 1944
- 2 more under consideration.
Greek Fleet Support Tanker
Displacement:
1,950 t light; 2,096 t standard; 6,715 t normal; 10,410 t full load
Dimensions: Length overall / water x beam x draught
366.06 ft / 356.00 ft x 46.00 ft x 20.22 ft (normal load)
111.58 m / 108.51 m x 14.02 m x 6.16 m
Armament:
4 - 1.57" / 40.0 mm guns (2x2 guns), 2.00lbs / 0.91kg shells, 1938 Model
Anti-aircraft guns in deck mounts
on side, all amidships
4 - 0.98" / 25.0 mm guns (2x2 guns), 0.50lbs / 0.23kg shells, 1940 Model
Machine guns in deck mounts
on side, all aft, all raised mounts - superfiring
12 - 0.50" / 12.7 mm guns (6x2 guns), 0.06lbs / 0.03kg shells, 1942 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 11 lbs / 5 kg
Shells per gun, main battery: 1,500
Machinery:
Diesel Internal combustion generators,
Electric motors, 1 shaft, 9,027 shp / 6,734 Kw = 18.00 kts
Actual Range 6,000nm at 15.00 kts
Bunker at max displacement = 1,381 tons
Service Bunker = 6,932 tons fuel oil
Complement:
370 - 482
Cost:
£0.651 million / $2.606 million
Distribution of weights at normal displacement:
Armament: 1 tons, 0.0 %
Machinery: 236 tons, 3.5 %
Hull, fittings & equipment: 1,413 tons, 21.0 %
Fuel, ammunition & stores: 4,765 tons, 71.0 %
Miscellaneous weights: 300 tons, 4.5 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
45,741 lbs / 20,748 Kg = 23,423.6 x 1.6 " / 40 mm shells or 9.8 torpedoes
Stability (Unstable if below 1.00): 1.85
Metacentric height 4.2 ft / 1.3 m
Roll period: 9.4 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 2.00
Hull form characteristics:
Hull has raised forecastle, raised quarterdeck
Block coefficient: 0.710
Length to Beam Ratio: 7.74 : 1
'Natural speed' for length: 18.87 kts
Power going to wave formation at top speed: 49 %
Trim (Max stability = 0, Max steadiness = 100): 35
Bow angle (Positive = bow angles forward): 16.00 degrees
Stern overhang: 3.25 ft / 0.99 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 23.75 ft / 7.24 m
- Forecastle (15 %): 22.33 ft / 6.81 m (21.33 ft / 6.50 m aft of break)
- Mid (50 %): 13.00 ft / 3.96 m
- Quarterdeck (15 %): 21.33 ft / 6.50 m (13.00 ft / 3.96 m before break)
- Stern: 21.33 ft / 6.50 m
- Average freeboard: 17.19 ft / 5.24 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 18.4 %
- Above water (accommodation/working, high = better): 102.3 %
Waterplane Area: 13,170 Square feet or 1,224 Square metres
Displacement factor (Displacement / loading): 859 %
Structure weight / hull surface area: 62 lbs/sq ft or 305 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.92
- Longitudinal: 2.20
- 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
Excellent seaboat, comfortable, can fire her guns in the heaviest weather