WesWorld

Training Sloop laid down 1941

Displacement: 1,395 t light; 1,495 t standard; 1,770 t normal; 1,990 t full load

Dimensions: Length overall / water x beam x draught

256.25 ft / 247.05 ft x 33.46 ft x 12.47 ft (normal load) [78.10 m / 75.30 m x 10.20 m x 3.80 m]

Armament:

6 - 5.12" / 130 mm guns (3x2 guns), 67.03lbs / 30.40kg shells, 1940 Model Dual purpose guns in deck mounts on centreline ends, majority aft, 1 raised mount aft - superfiring
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1938 Model Anti-aircraft guns in deck mounts on centreline, evenly spread, all raised mounts
4 - 0.79" / 20.0 mm guns (1x4 guns), 0.24lbs / 0.11kg shells, 1941 Model Anti-aircraft guns in deck mount on centreline, all raised guns
Weight of broadside 409 lbs / 186 kg
Shells per gun, main battery: 280

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 0.39" / 10 mm -

Conning tower: 0.98" / 25 mm

Machinery:

Oil fired boilers, complex reciprocating steam engines, Geared drive, 2 shafts, 6,794 ihp / 5,068 Kw = 20.00 kts
Range 4,700nm at 15.00 kts
Bunker at max displacement = 495 tons

Complement: 136 - 177

Cost: £0.891 million / $3.562 million

Distribution of weights at normal displacement:

Armament: 51 tons, 2.9 %
Armour: 17 tons, 1.0 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 14 tons, 0.8 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 3 tons, 0.2 %
Machinery: 373 tons, 21.1 %
Hull, fittings & equipment: 654 tons, 36.9 %
Fuel, ammunition & stores: 375 tons, 21.2 %
Miscellaneous weights: 300 tons, 17.0 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 2,080 lbs / 943 Kg = 31.0 x 5.1 " / 130 mm shells or 0.6 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 1.2 ft / 0.4 m
Roll period: 13.1 seconds
Steadiness - As gun platform (Average = 50 %): 76 %
- Recoil effect (Restricted arc if above 1.00): 0.63
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:

Hull has raised forecastle, low quarterdeck
Block coefficient: 0.601
Length to Beam Ratio: 7.38: 1
'Natural speed' for length: 15.72 kts
Power going to wave formation at top speed: 61 %
Trim (Max stability = 0, Max steadiness = 100): 38
Bow angle (Positive = bow angles forward): 17.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 19.36 ft / 5.90 m
- Forecastle (12 %): 18.70 ft / 5.70 m (18.04 ft / 5.50 m aft of break)
- Mid (60 %): 18.04 ft / 5.50 m
- Quarterdeck (12 %): 9.84 ft / 3.00 m (18.04 ft / 5.50 m before break)
- Stern: 9.84 ft / 3.00 m
- Average freeboard: 17.17 ft / 5.23 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 111.0 %
- Above water (accommodation/working, high = better): 153.0 %
Waterplane Area: 6,052 Square feet or 562 Square metres
Displacement factor (Displacement / loading): 120 %
Structure weight / hull surface area: 50 lbs/sq ft or 244 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.80
- Longitudinal: 7.72
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
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

180 tons reserved for accommodation of sea cadets (up to 90)
60 tons reserved for classroom spaces for sea cadets
60 tons reserved for future growth

If this is meant to be a training ship, I wonder what should be trained. For example, when she is a dedicated gunnery training ship, she would be better off with different mounts and guns, e.g. I´d replace the superfiring mount aft with a single 70-90mm HA mount. If she is meant to be for training of seamanship in general, she is too heavily armend and would need more deckspace instead (where classes can train, e.g. operating boats).

If she is meant to be a combatant to patrol possessions abroad or to act as heavy escort, she´s just fine.

Belgian Artevelde / German Lorelei?

Quoted

Originally posted by ALVAMA
Belgian Artevelde / German Lorelei?

That was the genesis of the drawing.

The IJN Katori-class were designed as training cruisers, they also carried TT's and a catapult plus floatplane.

I agree, this design is probably more suited as an escort rather than a training vessel.