WesWorld

X-Lighters
X-1 though X-32 - Laid down 1925

X-201 through X-216 - Laid down 1941-42


Small Landing Craft
SLC#1 through SCL#10 - Laid down 1941-42

X-1, Greek X Lighter laid down 1925

X-1 through X-32

Displacement:
192 t light; 196 t standard; 200 t normal; 203 t full load

Dimensions: Length overall / water x beam x draught
107.09 ft / 105.50 ft x 19.25 ft x 5.75 ft (normal load)
32.64 m / 32.16 m x 5.87 m x 1.75 m

Armament:
4 - 0.31" / 8.0 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1925 Model
Machine guns in deck mounts
on side, all forward
Weight of broadside 0 lbs / 0 kg
Shells per gun, main battery: 1,500

Machinery:
Petrol Internal combustion motors,
Direct drive, 1 shaft, 200 shp / 149 Kw = 10.58 kts
Range 1,100nm at 7.50 kts
Bunker at max displacement = 7 tons

Complement:
26 - 34

Cost:
£0.025 million / $0.100 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 6 tons, 3.2 %
Hull, fittings & equipment: 85 tons, 42.7 %
Fuel, ammunition & stores: 8 tons, 4.0 %
Miscellaneous weights: 100 tons, 50.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
404 lbs / 183 Kg = 25,864.2 x 0.3 " / 8 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.00
Metacentric height 0.4 ft / 0.1 m
Roll period: 12.4 seconds
Steadiness - As gun platform (Average = 50 %): 40 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 1.60

Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.599
Length to Beam Ratio: 5.48 : 1
'Natural speed' for length: 10.27 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 20
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 9.00 ft / 2.74 m
- Forecastle (20 %): 8.50 ft / 2.59 m (8.00 ft / 2.44 m aft of break)
- Mid (50 %): 8.00 ft / 2.44 m
- Quarterdeck (15 %): 8.00 ft / 2.44 m
- Stern: 8.00 ft / 2.44 m
- Average freeboard: 8.14 ft / 2.48 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 65.8 %
- Above water (accommodation/working, high = better): 85.1 %
Waterplane Area: 1,451 Square feet or 135 Square metres
Displacement factor (Displacement / loading): 177 %
Structure weight / hull surface area: 33 lbs/sq ft or 159 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.19
- Longitudinal: 8.43
- Overall: 1.45
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is cramped
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

X-200, Greek X Lighter laid down 1941-42

X-201 through X-216

Displacement:
180 t light; 187 t standard; 200 t normal; 210 t full load

Dimensions: Length overall / water x beam x draught
101.76 ft / 100.00 ft x 23.80 ft x 5.25 ft (normal load)
31.02 m / 30.48 m x 7.25 m x 1.60 m

Armament:
4 - 0.98" / 25.0 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Aft Main mounts separated by engine room
2 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1941 Model
Machine guns in deck mounts
on side, all forward
Weight of broadside 2 lbs / 1 kg
Shells per gun, main battery: 2,500

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.50" / 13 mm - -
2nd: 0.50" / 13 mm - -

Machinery:
Diesel Internal combustion motors,
Direct drive, 1 shaft, 149 shp / 112 Kw = 9.70 kts
Range 2,500nm at 9.70 kts
Bunker at max displacement = 23 tons

Complement:
26 - 34

Cost:
£0.044 million / $0.175 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.1 %
Armour: 0 tons, 0.2 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 0 tons, 0.2 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 4 tons, 2.0 %
Hull, fittings & equipment: 75 tons, 37.6 %
Fuel, ammunition & stores: 20 tons, 10.0 %
Miscellaneous weights: 100 tons, 50.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
516 lbs / 234 Kg = 1,082.4 x 1.0 " / 25 mm shells or 0.6 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 0.7 ft / 0.2 m
Roll period: 11.9 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.01
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.560
Length to Beam Ratio: 4.20 : 1
'Natural speed' for length: 10.00 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 25
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 10.00 ft / 3.05 m
- Forecastle (20 %): 10.00 ft / 3.05 m
- Mid (50 %): 9.00 ft / 2.74 m
- Quarterdeck (15 %): 9.00 ft / 2.74 m
- Stern: 9.00 ft / 2.74 m
- Average freeboard: 9.35 ft / 2.85 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 64.3 %
- Above water (accommodation/working, high = better): 110.2 %
Waterplane Area: 1,629 Square feet or 151 Square metres
Displacement factor (Displacement / loading): 181 %
Structure weight / hull surface area: 28 lbs/sq ft or 136 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.89
- Longitudinal: 8.45
- Overall: 1.11
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

SLC-65, Greek Small Landing Craft laid down 1941-42

SLC#1 through SLC#10

Displacement:
65 t light; 66 t standard; 68 t normal; 69 t full load

Dimensions: Length overall / water x beam x draught
64.19 ft / 63.32 ft x 19.49 ft x 3.28 ft (normal load)
19.56 m / 19.30 m x 5.94 m x 1.00 m

Machinery:
Diesel Internal combustion motors,
Direct drive, 2 shafts, 252 shp / 188 Kw = 12.00 kts
Range 200nm at 12.00 kts
Bunker at max displacement = 3 tons

Complement:
11 - 15

Cost:
£0.020 million / $0.079 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 7 tons, 9.8 %
Hull, fittings & equipment: 21 tons, 31.4 %
Fuel, ammunition & stores: 3 tons, 4.4 %
Miscellaneous weights: 37 tons, 54.4 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
99 lbs / 45 Kg = 0.9 x 6 " / 152 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 0.5 ft / 0.2 m
Roll period: 11.4 seconds
Steadiness - As gun platform (Average = 50 %): 24 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 0.20

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.588
Length to Beam Ratio: 3.25 : 1
'Natural speed' for length: 7.96 kts
Power going to wave formation at top speed: 74 %
Trim (Max stability = 0, Max steadiness = 100): 57
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 4.92 ft / 1.50 m
- Forecastle (10 %): 4.10 ft / 1.25 m
- Mid (20 %): 4.10 ft / 1.25 m
- Quarterdeck (10 %): 4.10 ft / 1.25 m
- Stern: 4.10 ft / 1.25 m
- Average freeboard: 4.13 ft / 1.26 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 91.2 %
- Above water (accommodation/working, high = better): 63.4 %
Waterplane Area: 892 Square feet or 83 Square metres
Displacement factor (Displacement / loading): 135 %
Structure weight / hull surface area: 19 lbs/sq ft or 94 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 3.66
- Overall: 1.06
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is cramped
Ship has quick, lively roll, not a steady gun platform
Caution: Lacks seaworthiness - very limited seakeeping ability