Dear visitor, welcome to WesWorld. If this is your first visit here, please read the Help. It explains in detail how this page works. To use all features of this page, you should consider registering. Please use the registration form, to register here or read more information about the registration process. If you are already registered, please login here.
Quoted
Originally posted by ShinRa_Inc
That seems to be an implied criticism of the Vimy Ridge class, sir.
Quoted
What's Australia's amphibious doctrine, and what's driving their acquisition of the ship? What sort of roles is it being created for?
Quoted
Originally posted by Desertfox
Well I am definitely not an expert on amphibious ships so don't know what is an adequate freeboard. I just based alot of specs on the Vimy Ridge class including the well deck, figuring Australia would have cooperated and gotten advise from Canada, with the deck being sized the same for commonality. As far as the water, the well deck wouldn't be completely filled.
No helos, facilities are for floatplanes and autogyros.
Armor belt is for specific critical areas. Armored deck represents strengthened decks to support tanks, landing craft, etc.
6in gun is the same as the Canadian 7.5in, a spare gun to give some fire support. I had the gun forward, but the middle seemed empty.
Quoted
What's Australia's amphibious doctrine, and what's driving their acquisition of the ship? What sort of roles is it being created for?
Umm, be able to land a 1,000 man force anywhere? Not my forte.
Quoted
Keppel Bay, Australian LST laid down 1943
Displacement:
2,477 t light; 2,555 t standard; 3,038 t normal; 3,425 t full load
Dimensions: Length overall / water x beam x draught
320.79 ft / 310.00 ft x 49.00 ft x 10.00 ft (normal load)
97.78 m / 94.49 m x 14.94 m x 3.05 m
Armament:
8 - 1.57" / 40.0 mm guns (2x4 guns), 1.95lbs / 0.89kg shells, 1943 Model
Anti-aircraft guns in deck mounts
on centreline ends, evenly spread
8 - 0.79" / 20.0 mm guns (4x2 guns), 0.24lbs / 0.11kg shells, 1943 Model
Machine guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 18 lbs / 8 kg
Shells per gun, main battery: 1,500
Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 3,964 shp / 2,957 Kw = 16.00 kts
Range 7,500nm at 15.00 kts
Bunker at max displacement = 870 tons
Complement:
203 - 265
Cost:
£0.673 million / $2.694 million
Distribution of weights at normal displacement:
Armament: 2 tons, 0.1 %
Machinery: 102 tons, 3.4 %
Hull, fittings & equipment: 873 tons, 28.7 %
Fuel, ammunition & stores: 561 tons, 18.5 %
Miscellaneous weights: 1,500 tons, 49.4 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
5,791 lbs / 2,627 Kg = 2,965.5 x 1.6 " / 40 mm shells or 1.6 torpedoes
Stability (Unstable if below 1.00): 1.14
Metacentric height 2.2 ft / 0.7 m
Roll period: 13.9 seconds
Steadiness - As gun platform (Average = 50 %): 76 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 1.76
Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.700
Length to Beam Ratio: 6.33 : 1
'Natural speed' for length: 17.61 kts
Power going to wave formation at top speed: 44 %
Trim (Max stability = 0, Max steadiness = 100): 43
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 1.00 ft / 0.30 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.00 ft / 6.40 m
- Forecastle (20 %): 19.00 ft / 5.79 m (12.00 ft / 3.66 m aft of break)
- Mid (50 %): 12.00 ft / 3.66 m
- Quarterdeck (15 %): 12.00 ft / 3.66 m
- Stern: 12.00 ft / 3.66 m
- Average freeboard: 13.56 ft / 4.13 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 66.5 %
- Above water (accommodation/working, high = better): 137.1 %
Waterplane Area: 12,175 Square feet or 1,131 Square metres
Displacement factor (Displacement / loading): 176 %
Structure weight / hull surface area: 54 lbs/sq ft or 262 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.41
- 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
Notes:
- Under LST rules, 1727t to construct.
- Sloping bottom of vessel has average draft of 10': 7-8' forward, 12-13' aft.
Breakdown of Miscellaneous Weights:
- 144 tons for four British Landing Craft Vehicle (LCV1) @ 36 tons each.
- 16 tons for forward ramp, etc
- 1346 tons for tanks, cargo, trucks, or troops (up to 10 tanks plus 15 trucks); max of 650 troops
Ships in Class:
- Keppel Bay
- Shoalwater Bay
- Bramble Bay
Quoted
Originally posted by The Rock Doctor
Sorry - what is this LST Rule?
Quoted
- LSTs are build to special rules because of them being a mix of a freighter and a warship
- The miscellaneous weight of LST is halved into deductable and non-deductable (50/50)
- The deductable weight is taken of the ships light displacement and so building time and building costs
- Otherwise all normal building rules apply
- For scrapping LST only the reduced weight is used for calculation.
- Any landing craft carried aboard the LST shall be purchased separately under light craft rules.
Forum Software: Burning Board® Lite 2.1.2 pl 1, developed by WoltLab® GmbH