WesWorld

Escort Sloop laid down 1942

Displacement: 582 t light; 629 t standard; 926 t normal; 1,163 t full load

Dimensions: Length overall / water x beam x draught

240.50 ft / 229.66 ft x 26.25 ft x 9.84 ft (normal load) [73.30 m / 70.00 m x 8.00 m x 3.00 m]

Armament:

4 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1936 Model Dual purpose guns in deck mounts on centreline ends, evenly spread, 2 raised mounts - superfiring
2 - 1.46" / 37.0 mm guns (1x2 guns), 1.55lbs / 0.70kg shells, 1938 Model Anti-aircraft guns in deck mount on centreline amidships, all raised guns - superfiring
4 - 0.79" / 20.0 mm guns (2x2 guns), 0.24lbs / 0.11kg shells, 1930 Model Anti-aircraft guns in deck mounts on side, all amidships
Weight of broadside 145 lbs / 66 kg
Shells per gun, main battery: 350

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 0.39" / 10 mm -
3rd: 0.39" / 10 mm - -

Conning tower: 0.98" / 25 mm

Machinery:

Oil fired boilers, steam turbines,
Geared drive, 1 shaft, 4,459 shp / 3,327 Kw = 20.00 kts
Range 10,000nm at 15.00 kts
Bunker at max displacement = 534 tons

Complement: 83 - 109

Cost: £0.330 million / $1.322 million

Distribution of weights at normal displacement:

Armament: 18 tons, 2.0 %
Armour: 10 tons, 1.1 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 8 tons, 0.9 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 2 tons, 0.2 %
Machinery: 116 tons, 12.6 %
Hull, fittings & equipment: 377 tons, 40.7 %
Fuel, ammunition & stores: 344 tons, 37.2 %
Miscellaneous weights: 60 tons, 6.5 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 2,114 lbs / 959 Kg = 59.9 x 4.1 " / 105 mm shells or 1.0 torpedoes
Stability (Unstable if below 1.00): 1.14
Metacentric height 0.9 ft / 0.3 m
Roll period: 11.8 seconds
Steadiness - As gun platform (Average = 50 %): 88 %
- Recoil effect (Restricted arc if above 1.00): 0.51
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:

Hull has rise forward of midbreak
Block coefficient: 0.546
Length to Beam Ratio: 8.75: 1
'Natural speed' for length: 15.15 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 44
Bow angle (Positive = bow angles forward): 22.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 18.70 ft / 5.70 m
- Forecastle (20 %): 18.04 ft / 5.50 m
- Mid (50 %): 18.04 ft / 5.50 m (10.17 ft / 3.10 m aft of break)
- Quarterdeck (25 %): 10.17 ft / 3.10 m
- Stern: 10.17 ft / 3.10 m
- Average freeboard: 14.16 ft / 4.32 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 65.9 %
- Above water (accommodation/working, high = better): 134.8 %
Waterplane Area: 4,062 Square feet or 377 Square metres
Displacement factor (Displacement / loading): 206 %
Structure weight / hull surface area: 39 lbs/sq ft or 190 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.81
- Longitudinal: 7.00
- 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

Breakdown of miscellaneous weight:

40 tons reserved for antisubmarine equipment and ASDIC
20 tons reserved for future growth

I'm not sure that the freeboard aft is enough with that massive fuel load....and I'm also concerned that that fuel load is way too excessive.

Quoted

Originally posted by TexanCowboy
I'm not sure that the freeboard aft is enough with that massive fuel load

Freeboard aft at full load would still be 2.47m

Quoted

Originally posted by TexanCowboy....and I'm also concerned that that fuel load is way too excessive.

That is a lot though.

Very powerful design. Range is long, sure. Depends on where you want to use that ship. Heavy armament, probably too heavy for an escort (read: too expensive). I´d probably trade at least one main gun for another pair of AA guns.

Agreed, probably "X" mount.