[size=3]
Herakles Class Destroyer[/size]
[list]
D-74 Heraklês (Ex G-1) [size=1](Reconstructed 01/Jul/36 to 09/Oct/37)[/size]
D-75 Amphion (Ex G-2) [size=1](Reconstructed 01/Oct/36 to 09/Jan/38)[/size]
D-76 Theseos (Ex G-3) [size=1](Reconstructed 02/Apr/37 to 11/Jul/38)[/size]
D-77 Britomartis (Ex G-4) [size=1](Reconstructed 09/Jul/37 to 17/Oct/38)[/size]
D-78 Endymion (Ex G-5) [size=1](Reconstructed 23/Sep/36 to 01/Jan/38)[/size]
D-79 Penélopê (Ex G-6) [size=1](Reconstructed 07/Nov/36 to 15/Feb/38)[/size]
D-80 Aktaion (Ex G-7) [size=1](Reconstructed 07/Feb/37 to 18/May/38)[/size]
D-81 Jason (Ex G-8) [size=1](Reconstructed 08/Jun/37 to 16/Sep/38)[/size]
D-82 Odysseus (Ex G-9) [size=1](Reconstructed 02/Apr/37 to 11/Jul/38)[/size]
D-83 Elektra (Ex G-10) [size=1](Reconstructed 30/Jan/37 to 10/May/38)[/size]
D-84 Medea (Ex G-11) [size=1](Reconstructed 16/Mar/37 to 24/Jun/38)[/size]
D-85 Aîas (Ex G-12) [size=1](Reconstructed 16/Jun/37 to 24/Sep/38)[/size]
D-86 Aison (Ex G-13) [size=1](Reconstructed 02/Apr/37 to 11/Jul/38)[/size]
D-87 Alkmênê (Ex G-14) [size=1](Reconstructed 09/Jul/37 to 17/Oct/38)[/size]
D-88 Arete (Ex G-15) [size=1](Reconstructed 23/Oct/37 to 31/Jan/39)[/size]
D-89 Diomedes (Ex G-16) [size=1](Reconstructed 01/Oct/37 to 09/Jan/39)[/size][/list]
D-74 Heraklês as refitted 1937. Three twin DP mounts and a single mounted in B position. These Destroyers are gun heavy and carry a lighter torpedo battery than most RHN Destroyers.
As built with enclosed turrets.
As modified with twin shields after trim and stability issues were identified after the first unit entered service.
RHN Herakles, Greek Destroyer laid down 1925 (Engine 1934)
Displacement:
2,068 t light; 2,146 t standard; 2,308 t normal; 2,438 t full load
Dimensions: Length overall / water x beam x draught
357.38 ft / 350.00 ft x 38.30 ft x 12.30 ft (normal load)
108.93 m / 106.68 m x 11.67 m x 3.75 m
Armament:
6 - 5.00" / 127 mm guns (3x2 guns), 59.90lbs / 27.17kg shells, 1934 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority aft, 1 raised mount aft - superfiring
1 - 5.00" / 127 mm guns in single mounts, 59.90lbs / 27.17kg shells, 1934 Model
Dual purpose gun in a deck mount with hoist
on centreline forward, 1 raised gun
4 - 1.57" / 40.0 mm guns (2x2 guns), 2.14lbs / 0.97kg shells, 1934 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
8 - 0.79" / 20.0 mm guns (4x2 guns), 0.27lbs / 0.12kg shells, 1934 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 430 lbs / 195 kg
Shells per gun, main battery: 128
4 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 0.75" / 19 mm 225.00 ft / 68.58 m 7.40 ft / 2.26 m
Ends: Unarmoured
Main Belt covers 99 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm - -
2nd: 0.50" / 13 mm - -
3rd: 0.50" / 13 mm - -
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 51,410 shp / 38,352 Kw = 33.10 kts
Range 3,000nm at 15.00 kts
Bunker at max displacement = 292 tons
Complement:
166 - 216
Cost:
£0.932 million / $3.727 million
Distribution of weights at normal displacement:
Armament: 56 tons, 2.4 %
Armour: 69 tons, 3.0 %
- Belts: 52 tons, 2.3 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 16 tons, 0.7 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 1,181 tons, 51.2 %
Hull, fittings & equipment: 732 tons, 31.7 %
Fuel, ammunition & stores: 240 tons, 10.4 %
Miscellaneous weights: 30 tons, 1.3 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
619 lbs / 281 Kg = 9.9 x 5.0 " / 127 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.18
Metacentric height 1.6 ft / 0.5 m
Roll period: 12.7 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.49
Seaboat quality (Average = 1.00): 0.66
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.490
Length to Beam Ratio: 9.14 : 1
'Natural speed' for length: 18.71 kts
Power going to wave formation at top speed: 71 %
Trim (Max stability = 0, Max steadiness = 100): 75
Bow angle (Positive = bow angles forward): 18.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22.70 ft / 6.92 m
- Forecastle (15 %): 19.70 ft / 6.00 m
- Mid (42 %): 19.70 ft / 6.00 m (10.70 ft / 3.26 m aft of break)
- Quarterdeck (15 %): 10.70 ft / 3.26 m
- Stern: 10.70 ft / 3.26 m
- Average freeboard: 14.66 ft / 4.47 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 184.8 %
- Above water (accommodation/working, high = better): 114.3 %
Waterplane Area: 8,850 Square feet or 822 Square metres
Displacement factor (Displacement / loading): 66 %
Structure weight / hull surface area: 47 lbs/sq ft or 232 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.60
- Longitudinal: 1.63
- Overall: 0.66
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Caution: Lacks seaworthiness - very limited seakeeping ability