WesWorld

Arethousa, Greek Minesweeper laid down 1925

Displacement:
801 t light; 823 t standard; 940 t normal; 1,034 t full load

Dimensions: Length overall / water x beam x draught
247.75 ft / 245.00 ft x 24.60 ft x 10.30 ft (normal load)
75.51 m / 74.68 m x 7.50 m x 3.14 m

Armament:
2 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1925 Model
Anti-aircraft guns in deck mounts
on centreline ends, evenly spread
4 - 1.57" / 40.0 mm guns (2x2 guns), 2.00lbs / 0.91kg shells, 1925 Model
Anti-aircraft guns in deck mounts
on side, all amidships
2 - 0.50" / 12.7 mm guns (1x2 guns), 0.06lbs / 0.03kg shells, 1925 Model
Machine guns in deck mount
on centreline aft, all raised guns - superfiring
Weight of broadside 72 lbs / 33 kg
Shells per gun, main battery: 80

Machinery:
Oil fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 4,275 ihp / 3,189 Kw = 20.00 kts
Range 4,500nm at 12.00 kts
Bunker at max displacement = 210 tons

Complement:
84 - 110

Cost:
£0.230 million / $0.918 million

Distribution of weights at normal displacement:
Armament: 9 tons, 1.0 %
Machinery: 247 tons, 26.2 %
Hull, fittings & equipment: 420 tons, 44.7 %
Fuel, ammunition & stores: 139 tons, 14.8 %
Miscellaneous weights: 125 tons, 13.3 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,260 lbs / 572 Kg = 39.4 x 4.0 " / 102 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.07
Metacentric height 0.7 ft / 0.2 m
Roll period: 12.4 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.23
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has raised forecastle, rise forward of midbreak
Block coefficient: 0.530
Length to Beam Ratio: 9.96 : 1
'Natural speed' for length: 15.65 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 25
Bow angle (Positive = bow angles forward): 5.00 degrees
Stern overhang: 1.00 ft / 0.30 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 20.00 ft / 6.10 m
- Forecastle (20 %): 19.00 ft / 5.79 m (18.00 ft / 5.49 m aft of break)
- Mid (70 %): 18.00 ft / 5.49 m (10.00 ft / 3.05 m aft of break)
- Quarterdeck (10 %): 10.00 ft / 3.05 m
- Stern: 10.00 ft / 3.05 m
- Average freeboard: 15.88 ft / 4.84 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 106.9 %
- Above water (accommodation/working, high = better): 147.1 %
Waterplane Area: 4,128 Square feet or 384 Square metres
Displacement factor (Displacement / loading): 136 %
Structure weight / hull surface area: 35 lbs/sq ft or 172 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.77
- Longitudinal: 10.67
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

MS-5 Arethousa
-Laid Down: 1-Jan-25 Launched: 24-Apr-25 Completed: 11-Oct-25 Entered Service: 9-Apr-26

MS-6 Memphis
-Laid Down: 1-Jul-25 Launched: 22-Oct-25 Completed: 10-Apr-26 Entered Service: 7-Oct-26

MS-7 Mykene
-Laid Down: 1-Jan-26 Launched: 24-Apr-26 Completed: 11-Oct-26 Entered Service: 9-Apr-27

MS-8 Plataia
-Laid Down: 1-Jul-26 Launched: 22-Oct-26 Completed: 10-Apr-27 Entered Service: 7-Oct-27

MS-9 Telphousa
-Laid Down: 1-Jan-27 Launched: 24-Apr-27 Completed: 11-Oct-27 Entered Service: 8-Apr-28

MS-10 Hesperia
-Laid Down: 01/Jul/27 Launched: 26/Oct/27 Completed: 20/Apr/28 Entered Service: 17/Oct/28

MS-11 Salmakis
-Laid Down: 01/Jan/28 Launched: 27/Apr/28 Completed: 21/Oct/28 Entered Service: 19/Apr/29

MS-12 Pegaiai
-Laid Down: 01/Jul/28 Launched: 26/Oct/28 Completed: 21/Apr/29 Entered Service: 18/Oct/29

MS-13 Kharybdis
-Laid Down: 03/May/29 Launched: 26/Aug/29 Completed: 15/Feb/30 Entered Service: 14/Aug/30

MS-14 Siren
-Laid Down: 02/Sep/29 Launched: 26/Dec/29 Completed: 17/Jun/30 Entered Service: 14/Dec/30

MS-15 Skylla
-Laid Down: 01/Jan/30 Launched: 26/Apr/30 Completed: 16/Oct/30 Entered Service: 14/Apr/31

MS-16 Harpie
-Laid Down: 03/May/30 Launched: 26/Aug/30 Completed: 15/Feb/31 Entered Service: 14/Aug/31

MS-17 Medusa
-Laid Down: 02/Sep/30 Launched: 26/Dec/30 Completed: 17/Jun/31 Entered Service: 14/Dec/31

MS-18 Minotaur
-Laid Down: 27-Jan-31 Launched: 22/May/31 Completed: 11/Nov/31 Entered Service: 09/May/32

[SIZE=3]MS165 Type 1, Greek Light Minesweeper laid down 1938[/SIZE]

Displacement:
165 t light; 173 t standard; 218 t normal; 254 t full load

Dimensions: Length overall / water x beam x draught
150.77 ft / 144.36 ft x 16.40 ft x 5.74 ft (normal load)
45.96 m / 44.00 m x 5.00 m x 1.75 m

Armament:
1 - 1.57" / 40.0 mm guns in single mounts, 1.95lbs / 0.88kg shells, 1938 Model
Anti-aircraft gun in deck mount
on centreline forward
4 - 0.79" / 20.0 mm guns (2x2 guns), 0.24lbs / 0.11kg shells, 1938 Model
Machine guns in deck mounts
on side, all amidships
Weight of broadside 3 lbs / 1 kg
Shells per gun, main battery: 1,500

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm - -
2nd: 0.98" / 25 mm - -

- Conning tower: 0.98" / 25 mm

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 1,472 shp / 1,098 Kw = 18.00 kts
Range 3,000nm at 15.00 kts
Bunker at max displacement = 81 tons

Complement:
27 - 36

Cost:
£0.066 million / $0.265 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.2 %
Armour: 2 tons, 0.7 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 1 tons, 0.3 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 1 tons, 0.4 %
Machinery: 40 tons, 18.5 %
Hull, fittings & equipment: 103 tons, 47.3 %
Fuel, ammunition & stores: 53 tons, 24.2 %
Miscellaneous weights: 20 tons, 9.2 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
456 lbs / 207 Kg = 233.5 x 1.6 " / 40 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.12
Metacentric height 0.4 ft / 0.1 m
Roll period: 10.8 seconds
Steadiness - As gun platform (Average = 50 %): 56 %
- Recoil effect (Restricted arc if above 1.00): 0.03
Seaboat quality (Average = 1.00): 1.76

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.561
Length to Beam Ratio: 8.80 : 1
'Natural speed' for length: 12.01 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 32
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 1.64 ft / 0.50 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 13.12 ft / 4.00 m
- Forecastle (20 %): 10.66 ft / 3.25 m
- Mid (50 %): 8.20 ft / 2.50 m
- Quarterdeck (15 %): 8.20 ft / 2.50 m
- Stern: 8.20 ft / 2.50 m
- Average freeboard: 9.26 ft / 2.82 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 73.7 %
- Above water (accommodation/working, high = better): 103.3 %
Waterplane Area: 1,670 Square feet or 155 Square metres
Displacement factor (Displacement / loading): 207 %
Structure weight / hull surface area: 26 lbs/sq ft or 126 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 8.86
- Overall: 1.17
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Actaeus Class

Ships in class:
Actaeus laid down April 1944
Argyron laid down April 1944
Atabyrius laid down April 1944
Chalcon laid down April 1944
Chryson laid down April 1944
Demonax laid down April 1944
Damnameneus laid down April 1944
Dexithea laid down April 1944
Euxanthios laid down April 1944
Lycos laid down April 1944
Lysagora laid down April 1944
Makelo laid down April 1944
Megalesius laid down October 1944
Mylas laid down October 1944
Nikon laid down October 1944
Ormenos laid down October 1944
Simon laid down October 1944
Skelmis laid down October 1944


Greece Fleet Minesweeper

Displacement:
550 t light; 580 t standard; 720 t normal; 832 t full load

Dimensions: Length overall / water x beam x draught
210.10 ft / 204.75 ft x 29.25 ft x 8.70 ft (normal load)
64.04 m / 62.41 m x 8.92 m x 2.65 m

Armament:
4 - 2.95" / 75.0 mm guns (2x2 guns), 13.00lbs / 5.90kg shells, 1944 Model
Anti-aircraft guns in deck mounts
on centreline ends, evenly spread
4 - 1.57" / 40.0 mm guns (2x2 guns), 2.00lbs / 0.91kg shells, 1944 Model
Anti-aircraft guns in deck mounts
on centreline ends, evenly spread, all raised mounts
8 - 0.98" / 25.0 mm guns (4x2 guns), 0.50lbs / 0.23kg shells, 1944 Model
Machine guns in deck mounts
on side, all amidships
Weight of broadside 64 lbs / 29 kg
Shells per gun, main battery: 400

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm 0.50" / 13 mm -
2nd: 0.50" / 13 mm - -
3rd: 0.25" / 6 mm - -

Machinery:
Diesel Internal combustion generators,
Electric motors, 2 shafts, 3,007 shp / 2,243 Kw = 18.61 kts
Range 6,500nm at 14.00 kts
Bunker at max displacement = 252 tons

Complement:
69 - 90

Cost:
£0.246 million / $0.985 million

Distribution of weights at normal displacement:
Armament: 8 tons, 1.1 %
Armour: 6 tons, 0.8 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 6 tons, 0.8 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 77 tons, 10.7 %
Hull, fittings & equipment: 269 tons, 37.4 %
Fuel, ammunition & stores: 170 tons, 23.7 %
Miscellaneous weights: 190 tons, 26.4 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,482 lbs / 672 Kg = 115.1 x 3.0 " / 75 mm shells or 0.8 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 1.0 ft / 0.3 m
Roll period: 12.5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.12
Seaboat quality (Average = 1.00): 1.74

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.484
Length to Beam Ratio: 7.00 : 1
'Natural speed' for length: 14.31 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 40
Bow angle (Positive = bow angles forward): 18.50 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 16.00 ft / 4.88 m
- Forecastle (20 %): 14.50 ft / 4.42 m
- Mid (68 %): 14.50 ft / 4.42 m (5.50 ft / 1.68 m aft of break)
- Quarterdeck (15 %): 5.50 ft / 1.68 m
- Stern: 5.50 ft / 1.68 m
- Average freeboard: 11.75 ft / 3.58 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 74.1 %
- Above water (accommodation/working, high = better): 132.1 %
Waterplane Area: 3,932 Square feet or 365 Square metres
Displacement factor (Displacement / loading): 175 %
Structure weight / hull surface area: 39 lbs/sq ft or 188 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.86
- Longitudinal: 3.96
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
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

Misc Weight Includes:
70t Sweeping Gear
20t Air Search
20t Surface Search
15t Aux Generators
15t Aux Pumps
50t Reserve