WesWorld

Items pertaining to Philippine Navy vessels projected for 1943-44.

A follow-on design from the original Colorado class, to fulfill minesweeping and local patrol duties. Slightly longer, with a flush desk, and more space below decks for habitability. Designed from the outset with air and surface warning radars, together with other sensors.

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Eka Colorado class, Philippine Minesweeper laid down 1943

Displacement: 460 t light; 498 t standard; 646 t normal; 765 t full load

Dimensions: Length overall / water x beam x draught

198.56 ft / 191.93 ft x 25.92 ft x 7.87 ft (normal load) [60.52 m / 58.50 m x 7.90 m x 2.40 m]

Armament:

2 - 4.53" / 115 mm guns in single mounts, 46.40lbs / 21.05kg shells, 1943 Model Dual purpose guns in deck mounts on centreline ends, evenly spread
2 - 1.38" / 35.0 mm guns (1x2 guns), 1.31lbs / 0.59kg shells, 1943 Model Anti-aircraft guns in deck mount on centreline aft
4 - 0.59" / 15.0 mm guns (2x2 guns), 0.10lbs / 0.05kg shells, 1943 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 96 lbs / 43 kg
Shells per gun, main battery: 450

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.18" / 30 mm 0.59" / 15 mm -
2nd: 0.59" / 15 mm 0.39" / 10 mm -

Conning tower: 0.98" / 25 mm

Machinery:

Diesel Internal combustion motors, Geared drive, 2 shafts, 2,624 shp / 1,957 Kw = 18.00 kts
Range 8,600nm at 13.00 kts
Bunker at max displacement = 267 tons

Complement: 63 - 83

Cost: £0.233 million / $0.934 million

Distribution of weights at normal displacement:

Armament: 12 tons, 1.9 %
Armour: 8 tons, 1.2 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 6 tons, 1.0 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 2 tons, 0.2 %
Machinery: 68 tons, 10.5 %
Hull, fittings & equipment: 233 tons, 36.0 %
Fuel, ammunition & stores: 186 tons, 28.8 %
Miscellaneous weights: 140 tons, 21.7 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 1,258 lbs / 571 Kg = 27.1 x 4.5 " / 115 mm shells or 0.7 torpedoes
Stability (Unstable if below 1.00): 1.16
Metacentric height 0.9 ft / 0.3 m
Roll period: 11.6 seconds
Steadiness - As gun platform (Average = 50 %): 66 %
- Recoil effect (Restricted arc if above 1.00): 0.21
Seaboat quality (Average = 1.00): 1.82

Hull form characteristics:

Hull has a flush deck
Block coefficient: 0.577
Length to Beam Ratio: 7.41 : 1
'Natural speed' for length: 13.85 kts
Power going to wave formation at top speed: 60 %
Trim (Max stability = 0, Max steadiness = 100): 36
Bow angle (Positive = bow angles forward): 22.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 16.40 ft / 5.00 m
- Forecastle (20 %): 14.76 ft / 4.50 m
- Mid (35 %): 10.17 ft / 3.10 m
- Quarterdeck (35 %): 10.17 ft / 3.10 m
- Stern: 10.17 ft / 3.10 m
- Average freeboard: 11.56 ft / 3.53 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 75.3 %
- Above water (accommodation/working, high = better): 117.8 %
Waterplane Area: 3,562 Square feet or 331 Square metres
Displacement factor (Displacement / loading): 170 %
Structure weight / hull surface area: 35 lbs/sq ft or 170 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.85
- Longitudinal: 4.54
- Overall: 1.00
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

Breakdown of miscellaneous weight

Sonar and A/S detection gear - 25 tons
Air and surface warning radar - 20 tons
Anti-submarine armament - DC racks for 24 DC and two K-guns - 20 tons
Minesweeping equipment - 50 tons
Tropicalization - 25 tons

Derived from earlier Philippine destroyer design studies - this ship is a bit longer and beamier, slightly slower but with a greater radius of action. The tonnage rises commensurately, but not outrageously so. Certainly at the high end of a mix of ships.

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Improved Pinatubo class, Philippine Destroyer laid down 1943

Displacement: 2,100 t light; 2,221 t standard; 2,552 t normal; 2,817 t full load

Dimensions: Length overall / water x beam x draught

401.76 ft / 393.70 ft x 39.37 ft x 12.80 ft (normal load) [122.46 m / 120.00 m x 12.00 m x 3.90 m]

Armament:

6 - 5.12" / 130 mm guns (3x2 guns), 67.03lbs / 30.40kg shells, 1943 Model Dual purpose guns in deck mounts with hoists on centreline ends, majority forward, 1 raised mount - superfiring
2 - 1.38" / 35.0 mm guns (1x2 guns), 1.31lbs / 0.59kg shells, 1941 Model Anti-aircraft guns in deck mount on centreline aft, all raised guns - superfiring
8 - 1.38" / 35.0 mm guns (4x2 guns), 1.31lbs / 0.59kg shells, 1941 Model Anti-aircraft guns in deck mounts on side, evenly spread
Weight of broadside 415 lbs / 188 kg
Shells per gun, main battery: 300
8 - 24.0" / 610 mm above water torpedoes

Armour:

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.59" / 15 mm 0.59" / 15 mm
2nd: 0.59" / 15 mm - -
3rd: 0.59" / 15 mm - -

Conning tower: 0.98" / 25 mm

Machinery:

Oil fired boilers, steam turbines, Geared drive, 2 shafts, 40,731 shp / 30,385 Kw = 33.00 kts
Range 7,000nm at 15.00 kts
Bunker at max displacement = 595 tons

Complement: 179 - 233

Cost: £1.720 million / $6.879 million

Distribution of weights at normal displacement:

Armament: 52 tons, 2.0 %
Armour: 21 tons, 0.8 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 17 tons, 0.7 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 4 tons, 0.2 %
Machinery: 1,040 tons, 40.8 %
Hull, fittings & equipment: 916 tons, 35.9 %
Fuel, ammunition & stores: 453 tons, 17.7 %
Miscellaneous weights: 70 tons, 2.7 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 1,200 lbs / 545 Kg = 17.9 x 5.1 " / 130 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.18
Metacentric height 1.7 ft / 0.5 m
Roll period: 12.7 seconds
Steadiness - As gun platform (Average = 50 %): 69 %
- Recoil effect (Restricted arc if above 1.00): 0.55
Seaboat quality (Average = 1.00): 1.14

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: 22.78 kts
Power going to wave formation at top speed: 65 %
Trim (Max stability = 0, Max steadiness = 100): 61
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22.15 ft / 6.75 m
- Forecastle (20 %): 19.19 ft / 5.85 m
- Mid (50 %): 15.91 ft / 4.85 m
- Quarterdeck (15 %): 15.91 ft / 4.85 m
- Stern: 15.91 ft / 4.85 m
- Average freeboard: 17.30 ft / 5.27 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 152.0 %
- Above water (accommodation/working, high = better): 97.5 %
Waterplane Area: 10,273 Square feet or 954 Square metres
Displacement factor (Displacement / loading): 98 %
Structure weight / hull surface area: 47 lbs/sq ft or 229 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.60
- Longitudinal: 2.28
- Overall: 0.68
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate

Breakdown of miscellaneous Weight

Reserved for radar and other electronics - 40 tons
Tropicalization - 30 tons

Successor class of mid-sized patrol submarines projected from 1943.

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French Improved Daphne-class Submarine, Export

Date: 1943
Coastal
Armament: 1x75mm, 2x35mm
ElecHP: 1600hp
DieselHP: 2800hp
CREW: 36
wt fuel&batts: 360t
Light Displacement 675t
Loaded Displacement 849t
Full Displacement 1026t
Reserve buoyancy: 17%
Max Surf Speed: 15.3 knots
Max Sub Speed: 9.2 knots

Length: 57.8m
Beam: 6.7m
Draft: 5.3m
Crush depth: 212.5m
Armament: 1x75mm, 2x35mm
#TT: 8 x 24" (6 bow, 2 stern)
14 tons for reload torpedoes or mines
Tons Oil: 160.0t
Tons Battery: 200.0t
Miscellaneous Weight: 43 tons

Surface Range: 7040nm@12 knots
Submerged Range: 73nm@6 knots / 22nm@9 knots

Breakdown of Miscellaneous Weights:
- 2 tons for 2x single 35mm AA guns on deck
- 9 tons for radar and other electronics
- 5 tons for snort
- 25 tons for all other equipment

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Thanks to Brock for the Sub-sim

Just for everyone's clarification, the upcoming French Thetis class submarine will be to the same design as above.