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Danao class, Philippine Utility Landing Ship laid down 1942

Displacement: 940 t light; 986 t standard; 1,225 t normal; 1,417 t full load

Dimensions: Length overall / water x beam x draught

263.29 ft / 246.06 ft x 29.86 ft x 9.48 ft (normal load) [80.25 m / 75.00 m x 9.10 m x 2.89 m]

Armament:

4 - 1.38" / 35.0 mm guns (2x2 guns), 1.31lbs / 0.59kg shells, 1942 Model Anti-aircraft guns in deck mounts on centreline ends, evenly spread
4 - 0.59" / 15.0 mm guns (2x2 guns), 0.10lbs / 0.05kg shells, 1942 Model Machine guns in deck mounts on side, all amidships, all raised mounts - superfiring
Weight of broadside 6 lbs / 3 kg
Shells per gun, main battery: 6,000

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.59" / 15 mm 0.59" / 15 mm -

Conning tower: 0.98" / 25 mm

Machinery:

Diesel Internal combustion motors, Geared drive, 2 shafts, 1,733 shp / 1,293 Kw = 15.00 kts
Range 12,000nm at 12.00 kts
Bunker at max displacement = 431 tons

Complement: 103 - 134

Cost: £0.253 million / $1.014 million

Distribution of weights at normal displacement:

Armament: 1 tons, 0.1 %
Armour: 4 tons, 0.3 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 2 tons, 0.1 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 2 tons, 0.2 %
Machinery: 45 tons, 3.7 %
Hull, fittings & equipment: 540 tons, 44.1 %
Fuel, ammunition & stores: 285 tons, 23.3 %
Miscellaneous weights: 350 tons, 28.6 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 3,333 lbs / 1,512 Kg = 2,547.7 x 1.4 " / 35 mm shells or 1.6 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 1.0 ft / 0.3 m
Roll period: 12.7 seconds
Steadiness - As gun platform (Average = 50 %): 58 %
- Recoil effect (Restricted arc if above 1.00): 0.01
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:

Hull has raised forecastle
Block coefficient: 0.616
Length to Beam Ratio: 8.24: 1
'Natural speed' for length: 15.69 kts
Power going to wave formation at top speed: 43 %
Trim (Max stability = 0, Max steadiness = 100): 29
Bow angle (Positive = bow angles forward): 45.00 degrees
Stern overhang: 0.82 ft / 0.25 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 16.40 ft / 5.00 m
- Forecastle (20 %): 14.44 ft / 4.40 m (11.15 ft / 3.40 m aft of break)
- Mid (50 %): 11.15 ft / 3.40 m
- Quarterdeck (25 %): 11.15 ft / 3.40 m
- Stern: 11.15 ft / 3.40 m
- Average freeboard: 11.97 ft / 3.65 m
Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 46.5 %
- Above water (accommodation/working, high = better): 112.5 %
Waterplane Area: 5,451 Square feet or 506 Square metres
Displacement factor (Displacement / loading): 272 %
Structure weight / hull surface area: 58 lbs/sq ft or 281 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.37
- Longitudinal: 3.53
- Overall: 1.50
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

Additional hull strength represents strengthening for beaching operations

Miscellaneous weight represents cargo carried - up to 350 tons of tanks and vehicles, 350 tons of supplies or 175 troops over short distances.

Light displacement 940 tons, less one half miscellaneous weight (350 tons) = 765 tons cost to construct


- LSTs are built to special rules because of them being a mix of a freighter and a warship
- The miscellaneous weight of LST is halved into deductible and non-deductible (50/50)
- The deductible weight is taken off 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


Danao - Laid down 1 January 1942; Launched 29 April 1942; Completed 22 October 1942
Dasay - Laid down 1 April 1942; Launched 28 July 1942; Completed 20 January 1943
Sampalos - Laid down 1 July 1942; Launched 1 July 1942; Completed 21 April 1943
Calibato - Laid down 1 October 1942

Cruzado, Philippine Logistics Ship laid down 1947

Displacement:
1,136 t light; 1,187 t standard; 2,351 t normal; 3,282 t full load

Dimensions: Length overall / water x beam x draught
200.12 ft / 196.16 ft x 49.87 ft x 12.14 ft (normal load)
61.00 m / 59.79 m x 15.20 m x 3.70 m

Armament:
4 - 1.38" / 35.0 mm guns in single mounts, 1.31lbs / 0.59kg shells, 1947 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
Weight of broadside 5 lbs / 2 kg
Shells per gun, main battery: 1,500

Machinery:
Diesel Internal combustion motors,
Geared drive, 6 shafts, 658 shp / 491 Kw = 10.00 kts
Range 79,500nm at 9.00 kts
Bunker at max displacement = 2,095 tons

Complement:
168 - 219

Cost:
£0.310 million / $1.239 million

Distribution of weights at normal displacement:
Armament: 1 tons, 0.0 %
Machinery: 16 tons, 0.7 %
Hull, fittings & equipment: 519 tons, 22.1 %
Fuel, ammunition & stores: 1,215 tons, 51.7 %
Miscellaneous weights: 600 tons, 25.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
8,733 lbs / 3,961 Kg = 6,675.6 x 1.4 " / 35 mm shells or 3.5 torpedoes
Stability (Unstable if below 1.00): 1.39
Metacentric height 3.1 ft / 1.0 m
Roll period: 11.8 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.693
Length to Beam Ratio: 3.93 : 1
'Natural speed' for length: 14.01 kts
Power going to wave formation at top speed: 40 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 14.76 ft / 4.50 m
- Forecastle (10 %): 13.12 ft / 4.00 m (10.66 ft / 3.25 m aft of break)
- Mid (50 %): 10.66 ft / 3.25 m
- Quarterdeck (25 %): 10.66 ft / 3.25 m
- Stern: 10.66 ft / 3.25 m
- Average freeboard: 10.97 ft / 3.35 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 31.9 %
- Above water (accommodation/working, high = better): 94.2 %
Waterplane Area: 7,792 Square feet or 724 Square metres
Displacement factor (Displacement / loading): 369 %
Structure weight / hull surface area: 51 lbs/sq ft or 248 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.90
- Longitudinal: 2.61
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
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

Cargo simmed as additional bunkers. Actual radius is 5,000 nm on bunkers of 89 tons; remaining represents 1,000 tons of cargo stowed below deck.

Actual full load displacement = 2,419 tons based upon radius of 5,000 nm

Breakdown of miscellaneous weight:

Provision for vehicles on deck - 200 tons
Provision for cargo handling gear - 200 tons
Provision for vehicle ramps - 200 tons


Cruzado – Laid down 1 January 1947; Launched 3 June 1947; Completed 3 November 1947