Mawari - Rev B, Philippine Patrol Combatant laid down 1945
Displacement: 440 t light; 453 t standard; 496 t normal; 530 t full load
Dimensions: Length overall / water x beam x draught
217.48 ft / 209.97 ft x 22.47 ft x 8.20 ft (normal load) [66.29 m / 64.00 m x 6.85 m x 2.50 m]
Armament:
1 - 2.95" / 75.0 mm guns in single mounts, 12.87lbs / 5.84kg shells, 1945 Model Anti-aircraft gun in deck mount on centreline forward
2 - 1.38" / 35.0 mm guns (1x2 guns), 1.31lbs / 0.59kg shells, 1945 Model Anti-aircraft guns in deck mount on centreline aft
4 - 0.50" / 12.7 mm guns (2x2 guns), 0.06lbs / 0.03kg shells, 1945 Model Machine guns in deck mounts on side, evenly spread
Weight of broadside 16 lbs / 7 kg
Shells per gun, main battery: 300
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 - -
Conning tower: 0.98" / 25 mm
Machinery:
Diesel Internal combustion motors, Geared drive, 2 shafts, 7,548 shp / 5,631 Kw = 25.00 kts
Range 2,100nm at 15.00 kts
Bunker at max displacement = 77 tons
Complement: 52 - 68
Cost: £0.302 million / $1.209 million
Distribution of weights at normal displacement:
Armament: 2 tons, 0.4 %
Armour: 3 tons, 0.5 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 1 tons, 0.3 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 1 tons, 0.3 %
Machinery: 191 tons, 38.4 %
Hull, fittings & equipment: 205 tons, 41.3 %
Fuel, ammunition & stores: 56 tons, 11.3 %
Miscellaneous weights: 40 tons, 8.1 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship): 344 lbs / 156 Kg = 26.7 x 3.0 " / 75 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 0.6 ft / 0.2 m
Roll period: 11.8 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.08
Seaboat quality (Average = 1.00): 1.93
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.449
Length to Beam Ratio: 9.34: 1
Natural speed' for length: 14.49 kts
Power going to wave formation at top speed: 67 %
Trim (Max stability = 0, Max steadiness = 100): 37
Bow angle (Positive = bow angles forward): 18.00 degrees
Stern overhang: 1.64 ft / 0.50 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 18.04 ft / 5.50 m
- Forecastle (20 %): 15.58 ft / 4.75 m
- Mid (50 %): 13.12 ft / 4.00 m
- Quarterdeck (15 %): 13.12 ft / 4.00 m
- Stern: 13.12 ft / 4.00 m
- Average freeboard: 14.18 ft / 4.32 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 136.7 %
- Above water (accommodation/working, high = better): 150.8 %
Waterplane Area: 3,006 Square feet or 279 Square metres
Displacement factor (Displacement / loading): 113 %
Structure weight / hull surface area: 24 lbs/sq ft or 116 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.55
- Longitudinal: 9.78
- Overall: 0.73
Hull space for machinery, storage, compartmentation is cramped
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:
Reserved for light search radar - 20 tons
Reserved for future growth - 20 tons
Marawi – Laid down 1 January 1945; launched 22 February 1945; Completed 10 May 1945
Meycauayan – Laid down 1 January 1945; launched 22 February 1945; Completed 10 May 1945
Pasay – Laid down 2 March 1945; Launched 23 April 1945; Completed 9 July 1945
Pateros – Laid down 2 March 1945; Launched 23 April 1945; Completed 9 July 1945
Carmona - Laid down 1 May 1945; Launched 22 June 1945; Completed 7 October 1945
Calaca - Laid down 1 May 1945; Launched 22 June 1945; Completed 7 October 1945
Navotas - Laid down 1 July 1945; Launched 22 August 1945; Completed 7 November 1945
Nasugbu - Laid down 1 July 1945; Launched 22 August 1945; Completed 7 November 1945
Danglas - Laid down 1 January 1946; Launched 22 February 1946; Completed 10 May 1946
Daragan - Laid down 1 January 1946; Launched 22 February 1946; Completed 10 May 1946
San Isidro - Laid down 1 April 1946; Launched 23 May 1946; Completed 8 August 1946
San Luis - Laid down 1 April 1946; Launched 23 May 1946; Completed 8 August 1946
Hermosa - Laid down 1 July 1946; Launched 22 August 1946; Completed 7 November 1946
Hagonoy - Laid down 1 July 1946; Launched 22 August 1946; Completed 7 November 1946
Alfonso - Laid down 1 October 1946; Launched 22 November 1946; Completed 7 February 1946
Amadeo - Laid down 1 October 1946; Launched 22 November 1946; Completed 7 February 1946