WesWorld

A couple more designs, first an AA Cruiser, followed by an Oceanic Escort.



An AA Cruiser based on the Launceston Torpedo Cruiser hull.

HMAS Auckland, Australia Light Cruiser laid down 1935

Displacement:
4,901 t light; 5,111 t standard; 6,421 t normal; 7,468 t full load

Dimensions: Length overall / water x beam x draught
521.66 ft / 510.00 ft x 51.00 ft x 19.20 ft (normal load)
159.00 m / 155.45 m x 15.54 m x 5.85 m

Armament:
12 - 4.70" / 119 mm guns (6x2 guns), 51.91lbs / 23.55kg shells, 1935 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread, 2 raised mounts - superfiring
32 - 1.57" / 40.0 mm guns (8x4 guns), 1.95lbs / 0.88kg shells, 1935 Model
Dual purpose guns in deck mounts
on side, evenly spread, 4 raised mounts
20 - 0.79" / 20.0 mm guns (10x2 guns), 0.24lbs / 0.11kg shells, 1935 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 690 lbs / 313 kg
Shells per gun, main battery: 200
12 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2.00" / 51 mm 322.00 ft / 98.15 m 9.00 ft / 2.74 m
Ends: Unarmoured
Main Belt covers 97 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.20" / 30 mm 1.20" / 30 mm -

- Armour deck: 1.20" / 30 mm, Conning tower: 1.20" / 30 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 57,359 shp / 42,789 Kw = 32.00 kts
Range 15,000nm at 15.00 kts
Bunker at max displacement = 2,357 tons

Complement:
358 - 466

Cost:
£2.404 million / $9.615 million

Distribution of weights at normal displacement:
Armament: 86 tons, 1.3 %
Armour: 679 tons, 10.6 %
- Belts: 242 tons, 3.8 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 46 tons, 0.7 %
- Armour Deck: 383 tons, 6.0 %
- Conning Tower: 9 tons, 0.1 %
Machinery: 1,630 tons, 25.4 %
Hull, fittings & equipment: 2,306 tons, 35.9 %
Fuel, ammunition & stores: 1,520 tons, 23.7 %
Miscellaneous weights: 200 tons, 3.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
8,124 lbs / 3,685 Kg = 156.5 x 4.7 " / 119 mm shells or 1.3 torpedoes
Stability (Unstable if below 1.00): 1.21
Metacentric height 2.6 ft / 0.8 m
Roll period: 13.3 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.31
Seaboat quality (Average = 1.00): 1.21

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.450
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 25.93 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 58
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 25.00 ft / 7.62 m
- Forecastle (30 %): 19.00 ft / 5.79 m
- Mid (50 %): 17.00 ft / 5.18 m
- Quarterdeck (20 %): 17.00 ft / 5.18 m
- Stern: 17.00 ft / 5.18 m
- Average freeboard: 18.52 ft / 5.64 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 96.9 %
- Above water (accommodation/working, high = better): 108.8 %
Waterplane Area: 17,234 Square feet or 1,601 Square metres
Displacement factor (Displacement / loading): 133 %
Structure weight / hull surface area: 78 lbs/sq ft or 381 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.89
- Longitudinal: 1.74
- Overall: 0.95
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily



***



A very long legged, Oceanic Escort. Can also be used as a minelayer. It has a long quarterdeck for either ASW equipment, mines, minesweeping gear, or planes/gyros.

OFF-1, Australia Oceanic Escort laid down 1936

Displacement:
1,201 t light; 1,269 t standard; 1,698 t normal; 2,042 t full load

Dimensions: Length overall / water x beam x draught
310.00 ft / 310.00 ft x 34.00 ft x 12.00 ft (normal load)
94.49 m / 94.49 m x 10.36 m x 3.66 m

Armament:
4 - 4.70" / 119 mm guns (2x2 guns), 51.91lbs / 23.55kg shells, 1936 Model
Dual purpose guns in deck mounts with hoists
on centreline, evenly spread
4 - 1.57" / 40.0 mm guns (1x4 guns), 1.95lbs / 0.88kg shells, 1936 Model
Anti-aircraft guns in deck mount
on centreline amidships, all raised guns - superfiring
8 - 0.79" / 20.0 mm guns (4x2 guns), 0.24lbs / 0.11kg shells, 1936 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 217 lbs / 99 kg
Shells per gun, main battery: 270
4 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.20" / 30 mm - -

- Conning tower: 1.20" / 30 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 11,895 shp / 8,873 Kw = 24.20 kts
Range 10,200nm at 15.00 kts
Bunker at max displacement = 774 tons

Complement:
131 - 171

Cost:
£0.588 million / $2.353 million

Distribution of weights at normal displacement:
Armament: 27 tons, 1.6 %
Armour: 14 tons, 0.9 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 11 tons, 0.6 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 4 tons, 0.2 %
Machinery: 334 tons, 19.6 %
Hull, fittings & equipment: 716 tons, 42.1 %
Fuel, ammunition & stores: 497 tons, 29.3 %
Miscellaneous weights: 110 tons, 6.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2,993 lbs / 1,357 Kg = 57.6 x 4.7 " / 119 mm shells or 0.9 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 1.4 ft / 0.4 m
Roll period: 12.1 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.42
Seaboat quality (Average = 1.00): 1.51

Hull form characteristics:
Hull has low quarterdeck
Block coefficient: 0.470
Length to Beam Ratio: 9.12 : 1
'Natural speed' for length: 17.61 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 47
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 17.00 ft / 5.18 m
- Forecastle (15 %): 15.00 ft / 4.57 m
- Mid (40 %): 15.00 ft / 4.57 m
- Quarterdeck (25 %): 10.00 ft / 3.05 m (15.00 ft / 4.57 m before break)
- Stern: 10.00 ft / 3.05 m
- Average freeboard: 13.87 ft / 4.23 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 84.7 %
- Above water (accommodation/working, high = better): 110.1 %
Waterplane Area: 6,837 Square feet or 635 Square metres
Displacement factor (Displacement / loading): 168 %
Structure weight / hull surface area: 56 lbs/sq ft or 273 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.89
- Longitudinal: 3.02
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

4.7" guns seem light enough to go for an all-superfiring layout like the Labradors.

Quoted

Fuel, ammunition & stores: 497 tons, 29.3 %

Seems a tad high, despite the other post.

Quoted

4.7" guns seem light enough to go for an all-superfiring layout like the Labradors.

But I prefer the looks on this one.

Quoted

Seems a tad high, despite the other post.

I might have to redisign all of my escorts, as some have up to 38%!

Bump


Siam might want to take a look at the first design. Much like what your looking for. It's also available with 4 triple turrets and lots of torpedoes.

Bump, as I will start building the Oceanic Escorts in 1941.

Quoted

Originally posted by Desertfox

Quoted

4.7" guns seem light enough to go for an all-superfiring layout like the Labradors.

But I prefer the looks on this one.

Atlantis has a similar layout on its improved Zerberus class.