WesWorld

Quoted

ML-1 Class, Belgium Fast Minelayer laid down 1946

Displacement:
2,300 t light; 2,394 t standard; 2,683 t normal; 2,915 t full load

Dimensions: Length overall / water x beam x draught
452.46 ft / 442.91 ft x 44.29 ft x 11.48 ft (normal load)
137.91 m / 135.00 m x 13.50 m x 3.50 m

Armament:
4 - 4.70" / 119 mm guns (2x2 guns), 51.91lbs / 23.55kg shells, 1946 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread, 1 raised mount aft - superfiring
10 - 1.46" / 37.0 mm guns (5x2 guns), 1.55lbs / 0.70kg shells, 1946 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
8 - 0.91" / 23.0 mm guns (4x2 guns), 0.37lbs / 0.17kg shells, 1946 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 226 lbs / 103 kg
Shells per gun, main battery: 300

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.38" / 35 mm 0.79" / 20 mm 0.79" / 20 mm
2nd: 0.39" / 10 mm 0.39" / 10 mm -
3rd: 0.39" / 10 mm - -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 50,000 shp / 37,300 Kw = 35.07 kts
Range 6,000nm at 15.00 kts
Bunker at max displacement = 521 tons

Complement:
186 - 242

Cost:
£1.918 million / $7.672 million

Distribution of weights at normal displacement:
Armament: 28 tons, 1.1 %
Armour: 16 tons, 0.6 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 16 tons, 0.6 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 1,188 tons, 44.3 %
Hull, fittings & equipment: 818 tons, 30.5 %
Fuel, ammunition & stores: 383 tons, 14.3 %
Miscellaneous weights: 250 tons, 9.3 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,068 lbs / 484 Kg = 20.6 x 4.7 " / 119 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.35
Metacentric height 2.5 ft / 0.8 m
Roll period: 11.7 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.16
Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
Hull has rise forward of midbreak, low quarterdeck
and transom stern
Block coefficient: 0.417
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 24.28 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 51
Bow angle (Positive = bow angles forward): 22.00 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 (20 %): 21.33 ft / 6.50 m
- Mid (52 %): 21.33 ft / 6.50 m (11.25 ft / 3.43 m aft of break)
- Quarterdeck (15 %): 11.25 ft / 3.43 m (14.53 ft / 4.43 m before break)
- Stern: 11.25 ft / 3.43 m
- Average freeboard: 17.22 ft / 5.25 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 162.1 %
- Above water (accommodation/working, high = better): 221.1 %
Waterplane Area: 12,669 Square feet or 1,177 Square metres
Displacement factor (Displacement / loading): 90 %
Structure weight / hull surface area: 39 lbs/sq ft or 189 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.24
- Overall: 0.55
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent

Quoted

MW-1 Class, Belgium Minesweeper/ Minelayer laid down 1946

Displacement:
576 t light; 598 t standard; 685 t normal; 755 t full load

Dimensions: Length overall / water x beam x draught
234.71 ft / 229.66 ft x 29.53 ft x 8.04 ft (normal load)
71.54 m / 70.00 m x 9.00 m x 2.45 m

Armament:
2 - 3.54" / 90.0 mm guns (1x2 guns), 24.25lbs / 11.00kg shells, 1943 Model
Dual purpose guns in deck mount
on centreline forward
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on centreline ends, evenly spread, all raised mounts
4 - 0.52" / 13.2 mm guns in single mounts, 0.07lbs / 0.03kg shells, 1936 Model
Machine guns in deck mounts
on side ends, evenly spread, 2 raised mounts - superfiring
Weight of broadside 55 lbs / 25 kg
Shells per gun, main battery: 250

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.39" / 10 mm -
2nd: 0.39" / 10 mm 0.20" / 5 mm -

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 4,000 shp / 2,984 Kw = 20.55 kts
Range 6,500nm at 12.00 kts
Bunker at max displacement = 158 tons

Complement:
66 - 87

Cost:
£0.280 million / $1.120 million

Distribution of weights at normal displacement:
Armament: 6 tons, 0.9 %
Armour: 3 tons, 0.5 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 3 tons, 0.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 100 tons, 14.6 %
Hull, fittings & equipment: 306 tons, 44.6 %
Fuel, ammunition & stores: 110 tons, 16.0 %
Miscellaneous weights: 160 tons, 23.3 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,411 lbs / 640 Kg = 63.4 x 3.5 " / 90 mm shells or 0.7 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 1.0 ft / 0.3 m
Roll period: 12.7 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.10
Seaboat quality (Average = 1.00): 1.82

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.440
Length to Beam Ratio: 7.78 : 1
'Natural speed' for length: 15.15 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 39
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 18.86 ft / 5.75 m
- Forecastle (20 %): 17.22 ft / 5.25 m
- Mid (55 %): 15.58 ft / 4.75 m (7.38 ft / 2.25 m aft of break)
- Quarterdeck (15 %): 7.38 ft / 2.25 m
- Stern: 7.38 ft / 2.25 m
- Average freeboard: 12.64 ft / 3.85 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 81.1 %
- Above water (accommodation/working, high = better): 151.6 %
Waterplane Area: 4,291 Square feet or 399 Square metres
Displacement factor (Displacement / loading): 165 %
Structure weight / hull surface area: 38 lbs/sq ft or 187 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.85
- Longitudinal: 4.20
- 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:
5 tons for Signaal M1946 surface search RDF set
10 tons for mine locating ASDIC set
Sweeper Fit: 60 tons for minesweeping gear and handling gear
Sweeper Escort Fit: as above plus 15 tons for 1x mine rail with 15x DCs
Layer Fit: 15 tons for mine rails and 120 tons for 80x mines

Quoted

Artevelde, Belgium Training Sloop laid down 1935 (Engine 1946)

Displacement:
1,141 t light; 1,172 t standard; 1,274 t normal; 1,355 t full load

Dimensions: Length overall / water x beam x draught
331.22 ft / 321.52 ft x 45.93 ft x 6.56 ft (normal load)
100.96 m / 98.00 m x 14.00 m x 2.00 m

Armament:
1 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1935 Model
Quick firing gun in deck mount
on centreline forward
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1944 Model
Anti-aircraft guns in deck mounts
on side, all amidships
8 - 0.91" / 23.0 mm guns (4x2 guns), 0.44lbs / 0.20kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
Weight of broadside 45 lbs / 20 kg
Shells per gun, main battery: 200
8 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.59" / 15 mm -
2nd: 0.59" / 15 mm 0.39" / 10 mm -
3rd: 0.39" / 10 mm 0.20" / 5 mm -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 2,968 shp / 2,214 Kw = 18.00 kts
Range 7,500nm at 10.00 kts
Bunker at max displacement = 182 tons

Complement:
106 - 138

Cost:
£0.280 million / $1.120 million

Distribution of weights at normal displacement:
Armament: 6 tons, 0.4 %
Armour: 5 tons, 0.4 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 5 tons, 0.4 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 74 tons, 5.8 %
Hull, fittings & equipment: 827 tons, 64.9 %
Fuel, ammunition & stores: 133 tons, 10.4 %
Miscellaneous weights: 230 tons, 18.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
6,958 lbs / 3,156 Kg = 197.0 x 4.1 " / 105 mm shells or 2.5 torpedoes
Stability (Unstable if below 1.00): 1.15
Metacentric height 2.0 ft / 0.6 m
Roll period: 13.5 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.02
Seaboat quality (Average = 1.00): 1.66

Hull form characteristics:
Hull has raised forecastle, rise forward of midbreak
and transom stern
Block coefficient: 0.460
Length to Beam Ratio: 7.00 : 1
'Natural speed' for length: 21.21 kts
Power going to wave formation at top speed: 40 %
Trim (Max stability = 0, Max steadiness = 100): 43
Bow angle (Positive = bow angles forward): 18.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 19.75 ft / 6.02 m
- Forecastle (20 %): 19.75 ft / 6.02 m (19.72 ft / 6.01 m aft of break)
- Mid (50 %): 19.72 ft / 6.01 m (11.71 ft / 3.57 m aft of break)
- Quarterdeck (15 %): 11.71 ft / 3.57 m
- Stern: 11.71 ft / 3.57 m
- Average freeboard: 15.72 ft / 4.79 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 43.4 %
- Above water (accommodation/working, high = better): 171.2 %
Waterplane Area: 9,869 Square feet or 917 Square metres
Displacement factor (Displacement / loading): 298 %
Structure weight / hull surface area: 60 lbs/sq ft or 295 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.09
- Longitudinal: 2.74
- Overall: 1.20
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

Designed primarily as a North Sea fisheries protection vessel, but also as coastal patrol.

Fitted with hydrophones and 4 DC throwers on the fantail (50t), as well as extra accomodations to allow some use as a training ship (100t) and some design slack for future growth (comp hull & 50 t)

Refit Notes
Conversion to oil-firing with new boilers
Modernisation of 37mm mounts with newer pattern mounts with Hazemyer IV
Replacement of 13.2mm HMG with 23mm FN-Madsen twin mounts
New ASDIC and passive hydrophones
New Signaal M1946 surface-search RDF set
Refurbishment of internal fittings for life extension
Extra 50 tons misc weight set aside for additional classrooms aft

Quoted

the design is quirky