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1

Wednesday, November 15th 2017, 4:46pm

Philippine Designs for 1949

Repository for information relating to the subject. Comments welcome.

2

Wednesday, November 15th 2017, 4:49pm

Numancia-class Ocean Escort

Numancia, Philippine Ocean Escort laid down 1949

Displacement: 1,390 t light; 1,476 t standard; 1,721 t normal; 1,917 t full load

Dimensions: Length overall / water x beam x draught

355.53 ft / 344.49 ft x 39.37 ft x 10.50 ft (normal load) [108.37 m / 105.00 m x 12.00 m x 3.20 m]

Armament:

4 - 4.53" / 115 mm guns (2x2 guns), 46.40lbs / 21.05kg shells, 1949 Model Dual purpose guns in deck mounts with hoists on centerline ends, evenly spread
8 - 1.38" / 35.0 mm guns (4x2 guns), 1.31lbs / 0.59kg shells, 1949 Model Anti-aircraft guns in deck mounts on side, evenly spread, 2 raised mounts
4 - 0.59" / 15.0 mm guns (2x2 guns), 0.10lbs / 0.05kg shells, 1949 Model Machine guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 196 lbs / 89 kg
Shells per gun, main battery: 450
3 - 24.0" / 610 mm above water torpedoes

Armor:

Gun armor: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.79" / 20 mm 0.39" / 10 mm 0.39" / 10 mm
2nd: 0.39" / 10 mm 0.39" / 10 mm -

Conning tower: 0.98" / 25 mm

Machinery: Oil fired boilers, steam turbines, Geared drive, 2 shafts, 11,008 shp / 8,212 Kw = 25.00 kts
Range 6,000nm at 16.00 kts
Bunker at max displacement = 441 tons

Complement: 133 - 173

Cost: £0.814 million / $3.255 million

Distribution of weights at normal displacement:

Armament: 25 tons, 1.4 %
Armor: 12 tons, 0.7 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 9 tons, 0.5 %
- Armor Deck: 0 tons, 0.0 %
- Conning Tower: 3 tons, 0.2 %
Machinery: 266 tons, 15.5 %
Hull, fittings & equipment: 938 tons, 54.5 %
Fuel, ammunition & stores: 331 tons, 19.2 %
Miscellaneous weights: 150 tons, 8.7 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 4,084 lbs / 1,852 Kg = 88.0 x 4.5 " / 115 mm shells or 1.2 torpedoes
Stability (Unstable if below 1.00): 1.15
Metacentric height 1.6 ft / 0.5 m
Roll period: 13.1 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.25
Seaboat quality (Average = 1.00): 1.59

Hull form characteristics:

Hull has rise forward of midbreak and transom stern
Block coefficient: 0.423
Length to Beam Ratio: 8.75: 1
'Natural speed' for length: 21.64 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 44
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.33 ft / 6.50 m
- Forecastle (20 %): 19.69 ft / 6.00 m
- Mid (50 %): 18.04 ft / 5.50 m (11.48 ft / 3.50 m aft of break)
- Quarterdeck (25 %): 11.48 ft / 3.50 m
- Stern: 11.48 ft / 3.50 m
- Average freeboard: 15.47 ft / 4.72 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 73.6 %
- Above water (accommodation/working, high = better): 156.4 %
Waterplane Area: 8,797 Square feet or 817 Square meters
Displacement factor (Displacement / loading): 193 %
Structure weight / hull surface area: 63 lbs/sq ft or 308 Kg/sq meter
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 3.14
- Overall: 1.10
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

Breakdown of Miscellaneous Weight

Reserved for air warning radar - 20 tons
Reserved for surface search radar - 20 tons
Reserved for fire control radar - 20 tons
Reserved for AS detection equipment - 20 tons
Reserved for Ahead-Thrown AS Weapon - 30 tons
Reserved for AS outfit including DC and K-guns - 40 tons

3

Wednesday, November 15th 2017, 4:50pm

Type 1949 Motor Torpedo Boat

Tonnage: 70
Dimensions: 25.4 x 6.24 x 1.24 meters
Machinery: Four shafts, four marine diesel engines, each 1,200 bhp; 44 knots
Radius: 1,000 nm at 14 knots, 600 nm at 33 knots
Crew: 20
Armament: Four 533mm torpedoes, four 25mm autocannon in twin mounts
Sensors: Type 103 ‘Nalca’

4

Friday, December 1st 2017, 1:28pm

1949 Battlecruiser Design Sketch

Something that the Philippine admirals have dreamt of.

TBD, Philippine Battlecruiser laid down 1949

Displacement: 26,198 t light; 27,396 t standard; 29,973 t normal; 32,035 t full load

Dimensions: Length overall / water x beam x draught

799.36 ft / 780.84 ft x 95.14 ft x 26.25 ft (normal load) [243.65 m / 238.00 m x 29.00 m x 8.00 m]

Armament:

9 - 11.02" / 280 mm guns (3x3 guns), 669.80lbs / 303.82kg shells, 1949 Model Breech loading guns in turrets (on barbettes) on centerline ends, majority forward, 1 raised mount - superfiring
2 - 5.12" / 130 mm guns (1x2 guns), 67.03lbs / 30.40kg shells, 1949 Model Dual purpose guns in a deck mount with hoist on centerline aft, all raised guns - superfiring
12 - 5.12" / 130 mm guns (6x2 guns), 67.03lbs / 30.40kg shells, 1949 Model Dual purpose guns in deck mounts with hoists on side, evenly spread
16 - 1.38" / 35.0 mm guns (8x2 guns), 1.31lbs / 0.59kg shells, 1949 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 6,988 lbs / 3,170 kg
Shells per gun, main battery: 150

Armor:

Belts: Width (max) Length (avg) Height (avg)
Main: 9.45" / 240 mm 557.74 ft / 170.00 m 13.12 ft / 4.00 m
Ends: Unarmored
Main Belt covers 110 % of normal length

Torpedo Bulkhead: 1.97" / 50 mm 557.74 ft / 170.00 m 16.40 ft / 5.00 m

Gun armor: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 11.0" / 280 mm 5.91" / 150 mm 5.91" / 150 mm
2nd: 0.98" / 25 mm 0.98" / 25 mm 0.98" / 25 mm
3rd: 0.98" / 25 mm 0.98" / 25 mm 0.98" / 25 mm
4th: 0.59" / 15 mm 0.39" / 10 mm -

Armor deck: 5.51" / 140 mm, Conning tower: 11.81" / 300 mm

Machinery:

Oil fired boilers, steam turbines, Geared drive, 4 shafts, 135,779 shp / 101,291 Kw = 32.00 kts
Range 8,500nm at 18.00 kts
Bunker at max displacement = 4,638 tons

Complement: 1,138 - 1,480

Cost: £16.114 million / $64.458 million

Distribution of weights at normal displacement:

Armament: 873 tons, 2.9 %
Armor: 10,440 tons, 34.8 %
- Belts: 2,888 tons, 9.6 %
- Torpedo bulkhead: 666 tons, 2.2 %
- Armament: 1,199 tons, 4.0 %
- Armor Deck: 5,441 tons, 18.2 %
- Conning Tower: 246 tons, 0.8 %
Machinery: 3,283 tons, 11.0 %
Hull, fittings & equipment: 11,452 tons, 38.2 %
Fuel, ammunition & stores: 3,775 tons, 12.6 %
Miscellaneous weights: 150 tons, 0.5 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 56,769 lbs / 25,750 Kg = 84.8 x 11.0 " / 280 mm shells or 9.1 torpedoes
Stability (Unstable if below 1.00): 1.14
Metacentric height 5.9 ft / 1.8 m
Roll period: 16.4 seconds
Steadiness - As gun platform (Average = 50 %): 74 %
- Recoil effect (Restricted arc if above 1.00): 0.42
Seaboat quality (Average = 1.00): 1.20

Hull form characteristics:

Hull has a flush deck and transom stern
Block coefficient: 0.538
Length to Beam Ratio: 8.21: 1
'Natural speed' for length: 32.26 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 62
Bow angle (Positive = bow angles forward): 22.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 37.73 ft / 11.50 m
- Forecastle (22 %): 26.25 ft / 8.00 m
- Mid (40 %): 21.33 ft / 6.50 m
- Quarterdeck (22 %): 21.33 ft / 6.50 m
- Stern: 21.33 ft / 6.50 m
- Average freeboard: 23.86 ft / 7.27 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 75.4 %
- Above water (accommodation/working, high = better): 197.5 %
Waterplane Area: 53,361 Square feet or 4,957 Square meters
Displacement factor (Displacement / loading): 124 %
Structure weight / hull surface area: 155 lbs/sq ft or 757 Kg/sq meter
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.19
- 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