WesWorld

Fast minelaying heavy destroyers designed to mine the approaches to Mindanao and the Southern Islands of the Philippines. Feel free to discuss.

Barayan, Philippines Heavy Destroyers laid down 1936

Displacement:
3,215 t light; 3,313 t standard; 3,631 t normal; 3,885 t full load

Dimensions: Length overall / water x beam x draught
456.17 ft / 442.91 ft x 44.62 ft x 16.08 ft (normal load)
139.04 m / 135.00 m x 13.60 m x 4.90 m

Armament:
6 - 4.53" / 115 mm guns (3x2 guns), 48.50lbs / 22.00kg shells, 1936 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
8 - 1.38" / 35.0 mm guns (4x2 guns), 1.31lbs / 0.59kg shells, 1936 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
8 - 0.54" / 13.7 mm guns in single mounts, 0.08lbs / 0.04kg shells, 1936 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 302 lbs / 137 kg
Shells per gun, main battery: 150
4 - 24.4" / 620 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.57" / 40 mm 0.79" / 20 mm -
2nd: 0.39" / 10 mm - -
3rd: 0.39" / 10 mm - -

- Conning tower: 2.76" / 70 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 75,929 shp / 56,643 Kw = 37.20 kts
Range 5,000nm at 15.00 kts
Bunker at max displacement = 572 tons

Complement:
233 - 304

Cost:
£2.212 million / $8.847 million

Distribution of weights at normal displacement:
Armament: 36 tons, 1.0 %
Armour: 34 tons, 0.9 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 20 tons, 0.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 14 tons, 0.4 %
Machinery: 1,975 tons, 54.4 %
Hull, fittings & equipment: 969 tons, 26.7 %
Fuel, ammunition & stores: 416 tons, 11.5 %
Miscellaneous weights: 200 tons, 5.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
831 lbs / 377 Kg = 17.9 x 4.5 " / 115 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.23
Metacentric height 2.2 ft / 0.7 m
Roll period: 12.7 seconds
Steadiness - As gun platform (Average = 50 %): 53 %
- Recoil effect (Restricted arc if above 1.00): 0.18
Seaboat quality (Average = 1.00): 0.70

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.400
Length to Beam Ratio: 9.93 : 1
'Natural speed' for length: 24.36 kts
Power going to wave formation at top speed: 67 %
Trim (Max stability = 0, Max steadiness = 100): 75
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22.97 ft / 7.00 m
- Forecastle (20 %): 20.67 ft / 6.30 m
- Mid (40 %): 20.67 ft / 6.30 m (11.48 ft / 3.50 m aft of break)
- Quarterdeck (15 %): 11.48 ft / 3.50 m
- Stern: 11.48 ft / 3.50 m
- Average freeboard: 15.34 ft / 4.68 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 189.2 %
- Above water (accommodation/working, high = better): 119.9 %
Waterplane Area: 12,625 Square feet or 1,173 Square metres
Displacement factor (Displacement / loading): 76 %
Structure weight / hull surface area: 47 lbs/sq ft or 227 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.57
- Longitudinal: 1.10
- Overall: 0.61
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

100 mines at 1mt each
20 tons for mines rails aft
20 tons radar
60 tons for growth

Terrible Idea,

You really need to focus on mining the northern approaches.



and this is why I usually don't comment on SATSUMA designs..

Oh, and while it has impressive speed, you lack sufficient composite hull strength. The design is over the 3,000t standard mark, and so needs 0.75

Personally, given her size I think her main armament is really weak. You can do alot more with 3,300 tons like CL armament in single shielded mounts.

Reduced the size to bring it to under 3,000t standard. Main armament is weak due to the space occupied by minelaying equipment taking a lot of space in the side to aft section. This ship is not designed to fight other ships, is designed to be fast and capable of night mining operations.

Barayan, Philippines Heavy Destroyers laid down 1936

Displacement:
2,872 t light; 2,963 t standard; 3,260 t normal; 3,498 t full load

Dimensions: Length overall / water x beam x draught
456.17 ft / 442.91 ft x 44.62 ft x 14.44 ft (normal load)
139.04 m / 135.00 m x 13.60 m x 4.40 m

Armament:
6 - 4.53" / 115 mm guns (3x2 guns), 48.50lbs / 22.00kg shells, 1936 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
8 - 1.38" / 35.0 mm guns (4x2 guns), 1.31lbs / 0.59kg shells, 1936 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
8 - 0.54" / 13.7 mm guns in single mounts, 0.08lbs / 0.04kg shells, 1936 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 302 lbs / 137 kg
Shells per gun, main battery: 150
4 - 24.4" / 620 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.57" / 40 mm 0.79" / 20 mm -
2nd: 0.39" / 10 mm - -
3rd: 0.39" / 10 mm - -

- Conning tower: 2.76" / 70 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 70,898 shp / 52,890 Kw = 37.20 kts
Range 5,000nm at 15.00 kts
Bunker at max displacement = 535 tons

Complement:
215 - 280

Cost:
£2.003 million / $8.012 million

Distribution of weights at normal displacement:
Armament: 36 tons, 1.1 %
Armour: 33 tons, 1.0 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 20 tons, 0.6 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 13 tons, 0.4 %
Machinery: 1,778 tons, 54.5 %
Hull, fittings & equipment: 825 tons, 25.3 %
Fuel, ammunition & stores: 388 tons, 11.9 %
Miscellaneous weights: 200 tons, 6.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
693 lbs / 314 Kg = 14.9 x 4.5 " / 115 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.25
Metacentric height 2.2 ft / 0.7 m
Roll period: 12.5 seconds
Steadiness - As gun platform (Average = 50 %): 54 %
- Recoil effect (Restricted arc if above 1.00): 0.18
Seaboat quality (Average = 1.00): 0.72

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.400
Length to Beam Ratio: 9.93 : 1
'Natural speed' for length: 24.36 kts
Power going to wave formation at top speed: 67 %
Trim (Max stability = 0, Max steadiness = 100): 75
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22.97 ft / 7.00 m
- Forecastle (20 %): 20.67 ft / 6.30 m
- Mid (40 %): 20.67 ft / 6.30 m (11.48 ft / 3.50 m aft of break)
- Quarterdeck (15 %): 11.48 ft / 3.50 m
- Stern: 11.48 ft / 3.50 m
- Average freeboard: 15.34 ft / 4.68 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 191.1 %
- Above water (accommodation/working, high = better): 129.9 %
Waterplane Area: 12,625 Square feet or 1,173 Square metres
Displacement factor (Displacement / loading): 72 %
Structure weight / hull surface area: 41 lbs/sq ft or 199 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.51
- Longitudinal: 0.93
- Overall: 0.54
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

100 mines at 1mt each
20 tons for mines rails aft
20 tons radar

then you don't need 6 guns, blazing speed, and 24" torpedos. You can get lots more mines onto a much smaller hull if you remove the requirement to fight other ships. On the other hand, these things are very useful if you intend to use her, say, to cover the withdrawl of your battle fleet.

i wouldn´t rate her armament "weak". In fact, she is probably overly armed given all the guns and TT (!) mounts that eat up the already limited deckspace. Where will you finally put the mines?

I also wonder if a seaboat rating of 0,7 is a wise choice. I agree a small hull doesn´t HAVE to have a rating above 0,8 but that at least should be the absolut lower limit.