Galateia , laid down 1923, refitted 1937
Eukrante , laid down 1923, sunk 09-11-35 (mine)
Glauke , laid down 1923, sunk 23-08-35 (mine)
Halia , laid down 1923, refitted 1937
Eunike , laid down 1923, rebuild 1938
Hipponoe , laid down 1923, rebuild 1938
Eupompe , laid down 1924, sunk 21-05-35 (torpedo)
Eulimene , laid down 1924, sunk 07-09-36 (torpedo)
Galene , laid down 1925, refitted 1935
Glaukonome , laid down 1925, rebuild 1938
Hippothoe , laid down 1926, rebuild 1938
Halimene , laid down 1926, rebuild 1938
Displacement:
1.394 t light; 1.449 t standard; 1.643 t normal; 1.792 t full load
Loading submergence 164 tons/feet
Dimensions:
329,99 ft x 30,18 ft x 13,12 ft (normal load)
100,58 m x 9,20 m x 4,00 m
Armament:
4 - 5,00" / 127 mm guns
5 - 1,57" / 40 mm AA guns
6 - 0,79" / 20 mm guns
Weight of broadside 261 lbs / 118 kg
6 - 21,0" / 533 mm above water torpedoes
Armour:
Main gun shields 1,38" / 35 mm, AA gun shields 0,98" / 25 mm, Light gun shields 0,98" / 25 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 42.000 shp / 31.332 Kw = 33,43 kts
Range 4.000nm at 15,00 kts
Complement:
129 - 167
Cost:
£0,595 million / $2,380 million
Distribution of weights at normal displacement:
Armament: 33 tons, 2,0%
Armour: 12 tons, 0,7%
Belts: 0 tons, 0,0%, Armament: 12 tons, 0,7%, Armour Deck: 0 tons, 0,0%
Conning Tower: 0 tons, 0,0%, Torpedo bulkhead: 0 tons, 0,0%
Machinery: 917 tons, 55,8%
Hull, fittings & equipment: 413 tons, 25,1%
Fuel, ammunition & stores: 249 tons, 15,2%
Miscellaneous weights: 20 tons, 1,2%
Metacentric height 1,1
Remarks:
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage & compartmentation is cramped
Room for accommodation & workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1,19
Shellfire needed to sink: 315 lbs / 143 Kg = 5,0 x 5,0 " / 127 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 0,2
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 70 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0,37
Relative quality as seaboat: 1,00
Hull form characteristics:
Block coefficient: 0,440
Sharpness coefficient: 0,30
Hull speed coefficient 'M': 8,55
'Natural speed' for length: 18,17 kts
Power going to wave formation at top speed: 69 %
Trim: 70
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)
Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 196,4%
Relative accommodation and working space: 72,5%
(Average = 100%)
Displacement factor: 53%
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0,50
(Structure weight / hull surface area: 34 lbs / square foot or 166 Kg / square metre)
Relative longitudinal hull strength: 1,36
(for 14,60 ft / 4,45 m average freeboard, freeboard adjustment 4,05 ft)
Relative composite hull strength: 0,55
After Refit:
Displacement:
1.395 t light; 1.445 t standard; 1.643 t normal; 1.802 t full load
Dimensions: Length overall / water x beam x draught
342,55 ft / 329,99 ft x 30,18 ft x 13,12 ft (normal load)
104,41 m / 100,58 m x 9,20 m x 4,00 m
Armament:
3 - 5,00" / 127 mm guns in single mounts, 62,50lbs / 28,35kg shells, 1923 Model
Breech loading guns in deck mounts
on centreline ends, majority forward, 1 raised mount
4 - 1,57" / 40,0 mm guns (2x2 guns), 1,95lbs / 0,88kg shells, 1923 Model
Breech loading guns in deck mounts
on side, evenly spread
10 - 0,79" / 20,0 mm guns (3 mounts), 0,24lbs / 0,11kg shells, 1923 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 198 lbs / 90 kg
Shells per gun, main battery: 150
10 - 21,0" / 533 mm above water torpedoes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0,98" / 25 mm 0,59" / 15 mm -
3rd: 0,59" / 15 mm - -
4th: 0,39" / 10 mm - -
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 42.000 shp / 31.332 Kw = 33,44 kts
Range 4.150nm at 15,00 kts
Bunker at max displacement = 358 tons
Complement:
128 - 167
Cost:
£0,582 million / $2,327 million
Distribution of weights at normal displacement:
Armament: 25 tons, 1,5%
Armour: 11 tons, 0,7%
- Belts: 0 tons, 0,0%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 11 tons, 0,7%
- Armour Deck: 0 tons, 0,0%
- Conning Tower: 0 tons, 0,0%
Machinery: 932 tons, 56,7%
Hull, fittings & equipment: 417 tons, 25,4%
Fuel, ammunition & stores: 249 tons, 15,1%
Miscellaneous weights: 10 tons, 0,6%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
293 lbs / 133 Kg = 4,7 x 5,0 " / 127 mm shells or 0,2 torpedoes
Stability (Unstable if below 1.00): 1,11
Metacentric height 1,0 ft / 0,3 m
Roll period: 12,6 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0,24
Seaboat quality (Average = 1.00): 1,00
Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0,440
Length to Beam Ratio: 10,93 : 1
'Natural speed' for length: 18,17 kts
Power going to wave formation at top speed: 69 %
Trim (Max stability = 0, Max steadiness = 100): 70
Bow angle (Positive = bow angles forward): 28,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 23,62 ft / 7,20 m
- Forecastle (31%): 19,19 ft / 5,85 m (11,32 ft / 3,45 m aft of break)
- Mid (33%): 11,32 ft / 3,45 m
- Quarterdeck (15%): 11,32 ft / 3,45 m
- Stern: 11,32 ft / 3,45 m
- Average freeboard: 14,31 ft / 4,36 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 195,1%
- Above water (accommodation/working, high = better): 32,8%
Waterplane Area: 6.303 Square feet or 586 Square metres
Displacement factor (Displacement / loading): 54%
Structure weight / hull surface area: 30 lbs/sq ft or 145 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,50
- Longitudinal: 2,20
- Overall: 0,57
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is extremely poor
Ship has slow, easy roll, a good, steady gun platform
After Rebuild:
Displacement:
1.380 t light; 1.445 t standard; 1.643 t normal; 1.802 t full load
Dimensions: Length overall / water x beam x draught
344,95 ft / 329,99 ft x 30,18 ft x 13,12 ft (normal load)
105,14 m / 100,58 m x 9,20 m x 4,00 m
Armament:
6 - 4,53" / 115 mm guns (3x2 guns), 46,40lbs / 21,05kg shells, 1938 Model
Dual purpose guns in deck mounts
on centreline ends, majority forward, 1 raised mount - superfiring
4 - 1,57" / 40,0 mm guns (2x2 guns), 1,95lbs / 0,89kg shells, 1938 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
6 - 0,79" / 20,0 mm guns (4 mounts), 0,24lbs / 0,11kg shells, 1938 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 288 lbs / 131 kg
Shells per gun, main battery: 200
5 - 21,0" / 533 mm above water torpedoes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1,18" / 30 mm 0,98" / 25 mm -
3rd: 0,59" / 15 mm - -
4th: 0,39" / 10 mm - -
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 45.576 shp / 34.000 Kw = 34,08 kts
Range 4.800nm at 15,00 kts
Bunker at max displacement = 356 tons
Complement:
128 - 167
Cost:
£1,129 million / $4,515 million
Distribution of weights at normal displacement:
Armament: 36 tons, 2,2%
Armour: 20 tons, 1,2%
- Belts: 0 tons, 0,0%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 20 tons, 1,2%
- Armour Deck: 0 tons, 0,0%
- Conning Tower: 0 tons, 0,0%
Machinery: 870 tons, 52,9%
Hull, fittings & equipment: 444 tons, 27,0%
Fuel, ammunition & stores: 264 tons, 16,0%
Miscellaneous weights: 10 tons, 0,6%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
340 lbs / 154 Kg = 7,3 x 4,5 " / 115 mm shells or 0,2 torpedoes
Stability (Unstable if below 1.00): 1,27
Metacentric height 1,3 ft / 0,4 m
Roll period: 11,2 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0,32
Seaboat quality (Average = 1.00): 1,00
Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0,440
Length to Beam Ratio: 10,93 : 1
'Natural speed' for length: 18,17 kts
Power going to wave formation at top speed: 70 %
Trim (Max stability = 0, Max steadiness = 100): 70
Bow angle (Positive = bow angles forward): 30,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 25,92 ft / 7,90 m
- Forecastle (31%): 19,19 ft / 5,85 m (11,32 ft / 3,45 m aft of break)
- Mid (33%): 11,32 ft / 3,45 m
- Quarterdeck (15%): 11,32 ft / 3,45 m
- Stern: 11,32 ft / 3,45 m
- Average freeboard: 14,59 ft / 4,45 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 188,7%
- Above water (accommodation/working, high = better): 69,5%
Waterplane Area: 6.303 Square feet or 586 Square metres
Displacement factor (Displacement / loading): 58%
Structure weight / hull surface area: 31 lbs/sq ft or 152 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,50
- Longitudinal: 2,45
- Overall: 0,58
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform