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Quoted
ML-1, Siamese Minelayer laid down 1936
Displacement:
200 t light; 210 t standard; 245 t normal; 273 t full load
Dimensions: Length overall / water x beam x draught
164.04 ft / 164.04 ft x 20.51 ft x 4.92 ft (normal load)
50.00 m / 50.00 m x 6.25 m x 1.50 m
Armament:
2 - 3.00" / 76.2 mm guns (1x2 guns), 13.23lbs / 6.00kg shells, 1936 Model
Dual purpose guns in a deck mount with hoist
on centreline forward
6 - 0.79" / 20.0 mm guns (2x3 guns), 0.22lbs / 0.10kg shells, 1936 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
3 - 0.79" / 20.0 mm guns (1x3 guns), 0.22lbs / 0.10kg shells, 1936 Model
Anti-aircraft guns in deck mount
on centreline aft, all raised guns - superfiring
Weight of broadside 28 lbs / 13 kg
Shells per gun, main battery: 300
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.79" / 20 mm 0.79" / 20 mm 0.79" / 20 mm
2nd: 0.79" / 20 mm - -
3rd: 0.79" / 20 mm - -
- Conning tower: 0.79" / 20 mm
Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 800 shp / 597 Kw = 15.43 kts
Range 2,000nm at 15.43 kts
Bunker at max displacement = 62 tons
Complement:
30 - 40
Cost:
£0.070 million / $0.279 million
Distribution of weights at normal displacement:
Armament: 4 tons, 1.5 %
Armour: 4 tons, 1.8 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 4 tons, 1.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 1 tons, 0.3 %
Machinery: 22 tons, 9.2 %
Hull, fittings & equipment: 116 tons, 47.3 %
Fuel, ammunition & stores: 45 tons, 18.2 %
Miscellaneous weights: 54 tons, 22.0 %
Storage for 72 mines (1500 lbs each)
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
603 lbs / 274 Kg = 44.7 x 3.0 " / 76 mm shells or 0.6 torpedoes
Stability (Unstable if below 1.00): 1.09
Metacentric height 0.6 ft / 0.2 m
Roll period: 11.6 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.28
Seaboat quality (Average = 1.00): 1.87
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.518
Length to Beam Ratio: 8.00 : 1
'Natural speed' for length: 12.81 kts
Power going to wave formation at top speed: 51 %
Trim (Max stability = 0, Max steadiness = 100): 38
Bow angle (Positive = bow angles forward): 0.00 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 (20 %): 9.02 ft / 2.75 m
- Mid (50 %): 8.20 ft / 2.50 m
- Quarterdeck (15 %): 7.38 ft / 2.25 m
- Stern: 6.56 ft / 2.00 m
- Average freeboard: 8.62 ft / 2.63 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 67.2 %
- Above water (accommodation/working, high = better): 118.2 %
Waterplane Area: 2,279 Square feet or 212 Square metres
Displacement factor (Displacement / loading): 185 %
Structure weight / hull surface area: 29 lbs/sq ft or 142 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.86
- Longitudinal: 3.62
- 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
Quoted
Chiang Dao, Siamese Patrol Sloop laid down 1936
Displacement:
600 t light; 625 t standard; 674 t normal; 713 t full load
Dimensions: Length overall / water x beam x draught
236.23 ft / 229.66 ft x 26.25 ft x 9.84 ft (normal load)
72.00 m / 70.00 m x 8.00 m x 3.00 m
Armament:
4 - 3.00" / 76.2 mm guns (2x2 guns), 13.23lbs / 6.00kg shells, 1936 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1936 Model
Dual purpose guns in deck mounts
on side, all amidships, all raised mounts - superfiring
12 - 0.79" / 20.0 mm guns (4x3 guns), 0.22lbs / 0.10kg shells, 1936 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 62 lbs / 28 kg
Shells per gun, main battery: 300
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.98" / 25 mm 0.98" / 25 mm
2nd: 0.98" / 25 mm - -
3rd: 0.98" / 25 mm - -
- Conning tower: 0.98" / 25 mm
Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 7,000 shp / 5,222 Kw = 24.95 kts
Range 3,000nm at 12.80 kts
Bunker at max displacement = 87 tons
Complement:
65 - 85
Cost:
£0.291 million / $1.163 million
Distribution of weights at normal displacement:
Armament: 8 tons, 1.2 %
Armour: 12 tons, 1.9 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 11 tons, 1.6 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 2 tons, 0.2 %
Machinery: 196 tons, 29.1 %
Hull, fittings & equipment: 336 tons, 49.8 %
Fuel, ammunition & stores: 74 tons, 10.9 %
Miscellaneous weights: 48 tons, 7.1 %
8 tons - ASDIC
20 tons - 40 depth charges
20 tons - Marine berthing (20 Marines)
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
845 lbs / 383 Kg = 62.6 x 3.0 " / 76 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.12
Metacentric height 0.8 ft / 0.3 m
Roll period: 12.1 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.25
Seaboat quality (Average = 1.00): 1.42
Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.398
Length to Beam Ratio: 8.75 : 1
'Natural speed' for length: 17.74 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 35
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: 18.04 ft / 5.50 m
- Forecastle (20 %): 13.12 ft / 4.00 m
- Mid (50 %): 12.30 ft / 3.75 m
- Quarterdeck (10 %): 11.48 ft / 3.50 m
- Stern: 10.66 ft / 3.25 m
- Average freeboard: 12.70 ft / 3.87 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 112.5 %
- Above water (accommodation/working, high = better): 138.0 %
Waterplane Area: 3,845 Square feet or 357 Square metres
Displacement factor (Displacement / loading): 131 %
Structure weight / hull surface area: 41 lbs/sq ft or 198 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.82
- Longitudinal: 6.09
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily
This post has been edited 2 times, last edit by "Carthaginian" (Feb 29th 2008, 5:56am)
Quoted
Originally posted by Kaiser Kirk
I note that Chiang Dao is trimmed down heavily. That means you likely have extra seakeeping. Now, light small craft can have less than 1.0 comp hull, so you can push the speed up if you want.
Quoted
Originally posted by Kaiser KirkDon't know about ASDIC, seems a bunch of nations have it and many don't. No clue as to Siam/ Denmark. RAM indicated the Dutch didn't so until recently I've been installing hydrophones until Phillips Electronics came through for me...
This post has been edited 3 times, last edit by "Carthaginian" (Feb 29th 2008, 6:11am)
Quoted
Struma, Bulgarian Minesweeper laid down 1935
Displacement:
430 t light; 442 t standard; 499 t normal; 544 t full load
Dimensions: Length overall / water x beam x draught
192.75 ft / 189.00 ft x 27.00 ft x 9.00 ft (normal load)
58.75 m / 57.61 m x 8.23 m x 2.74 m
Armament:
2 - 2.99" / 76.0 mm guns (1x2 guns), 13.39lbs / 6.08kg shells, 1935 Model
Dual purpose guns in deck mount
on centreline forward
2 - 1.57" / 40.0 mm guns in single mounts, 1.95lbs / 0.88kg shells, 1935 Model
Quick firing guns in deck mounts
on side, all amidships
4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1935 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 31 lbs / 14 kg
Shells per gun, main battery: 150
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.57" / 40 mm - -
2nd: 0.79" / 20 mm - -
Machinery:
Diesel Internal combustion motors,
Direct drive, 2 shafts, 1,098 shp / 819 Kw = 16.00 kts
Range 5,000nm at 12.00 kts
Bunker at max displacement = 101 tons
Complement:
52 - 68
Cost:
£0.115 million / $0.461 million
Distribution of weights at normal displacement:
Armament: 4 tons, 0.8 %
Armour: 5 tons, 1.0 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 5 tons, 1.0 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 31 tons, 6.3 %
Hull, fittings & equipment: 209 tons, 42.0 %
Fuel, ammunition & stores: 69 tons, 13.9 %
Miscellaneous weights: 180 tons, 36.1 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,104 lbs / 501 Kg = 82.4 x 3.0 " / 76 mm shells or 0.8 torpedoes
Stability (Unstable if below 1.00): 1.06
Metacentric height 0.8 ft / 0.2 m
Roll period: 12.8 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.06
Seaboat quality (Average = 1.00): 2.00
Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.380
Length to Beam Ratio: 7.00 : 1
'Natural speed' for length: 16.50 kts
Power going to wave formation at top speed: 48 %
Trim (Max stability = 0, Max steadiness = 100): 25
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: 14.00 ft / 4.27 m
- Forecastle (20 %): 10.00 ft / 3.05 m
- Mid (50 %): 10.00 ft / 3.05 m
- Quarterdeck (15 %): 10.00 ft / 3.05 m
- Stern: 10.00 ft / 3.05 m
- Average freeboard: 10.32 ft / 3.15 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 66.4 %
- Above water (accommodation/working, high = better): 118.2 %
Waterplane Area: 3,228 Square feet or 300 Square metres
Displacement factor (Displacement / loading): 179 %
Structure weight / hull surface area: 37 lbs/sq ft or 183 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 4.34
- Overall: 1.09
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
Ships in class: Struma, Kamchiya, Varbitsa (all building Q3/35, finish Q4/35, working up Q1/36)
Quoted
Salzata, Bulgarian Subchaser laid down 1937
Displacement:
269 t light; 277 t standard; 357 t normal; 422 t full load
Dimensions: Length overall / water x beam x draught
174.75 ft / 174.75 ft x 23.00 ft x 7.50 ft (normal load)
53.26 m / 53.26 m x 7.01 m x 2.29 m
Armament:
2 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1936 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread
2 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1936 Model
Anti-aircraft guns in deck mounts
on side, all amidships
3 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1936 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 28 lbs / 13 kg
Shells per gun, main battery: 100
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.50" / 13 mm - -
2nd: 0.25" / 6 mm - -
3rd: 0.25" / 6 mm - -
- Conning tower: 0.50" / 13 mm
Machinery:
Diesel Internal combustion motors,
Direct drive, 2 shafts, 2,200 shp / 1,641 Kw = 20.00 kts
Range 6,000nm at 14.00 kts
Bunker at max displacement = 144 tons
Complement:
40 - 53
Cost:
£0.110 million / $0.442 million
Distribution of weights at normal displacement:
Armament: 3 tons, 1.0 %
Armour: 2 tons, 0.6 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 2 tons, 0.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 1 tons, 0.2 %
Machinery: 62 tons, 17.3 %
Hull, fittings & equipment: 147 tons, 41.2 %
Fuel, ammunition & stores: 89 tons, 24.9 %
Miscellaneous weights: 54 tons, 15.1 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
681 lbs / 309 Kg = 50.5 x 3.0 " / 76 mm shells or 0.6 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 0.7 ft / 0.2 m
Roll period: 11.8 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.10
Seaboat quality (Average = 1.00): 1.42
Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.415
Length to Beam Ratio: 7.60 : 1
'Natural speed' for length: 15.63 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 14.54 ft / 4.43 m
- Forecastle (20 %): 9.25 ft / 2.82 m
- Mid (50 %): 9.25 ft / 2.82 m
- Quarterdeck (15 %): 9.25 ft / 2.82 m
- Stern: 9.25 ft / 2.82 m
- Average freeboard: 9.67 ft / 2.95 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 80.4 %
- Above water (accommodation/working, high = better): 114.2 %
Waterplane Area: 2,592 Square feet or 241 Square metres
Displacement factor (Displacement / loading): 172 %
Structure weight / hull surface area: 31 lbs/sq ft or 150 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.85
- Longitudinal: 4.45
- 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
Good seaboat, rides out heavy weather easily
Ships in class named after the Seven Rila Lakes of Bulgaria
Quoted
LBP-01, Siamese Partol Boat laid down 1936
Displacement:
160 t light; 168 t standard; 192 t normal; 211 t full load
Dimensions: Length overall / water x beam x draught
162.39 ft / 157.48 ft x 16.40 ft x 6.56 ft (normal load)
49.50 m / 48.00 m x 5.00 m x 2.00 m
Armament:
2 - 3.00" / 76.2 mm guns (1x2 guns), 13.50lbs / 6.12kg shells, 1936 Model
Dual purpose guns in a deck mount with hoist
on centreline forward
12 - 0.79" / 20.0 mm guns (4x3 guns), 0.24lbs / 0.11kg shells, 1936 Model
Dual purpose guns in deck mounts
on side, all amidships, all raised mounts - superfiring
8 - 0.51" / 13.0 mm guns in single mounts, 0.07lbs / 0.03kg shells, 1936 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 30 lbs / 14 kg
Shells per gun, main battery: 200
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.79" / 20 mm 0.79" / 20 mm 0.79" / 20 mm
2nd: 0.79" / 20 mm - -
- Conning tower: 0.79" / 20 mm
Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 1,400 shp / 1,044 Kw = 18.75 kts
Range 3,000nm at 12.55 kts
Bunker at max displacement = 43 tons
Complement:
25 - 33
Cost:
£0.075 million / $0.302 million
Distribution of weights at normal displacement:
Armament: 4 tons, 2.0 %
Armour: 6 tons, 2.9 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 5 tons, 2.6 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 1 tons, 0.3 %
Machinery: 39 tons, 20.5 %
Hull, fittings & equipment: 93 tons, 48.2 %
Fuel, ammunition & stores: 32 tons, 16.5 %
Miscellaneous weights: 19 tons, 9.9 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
277 lbs / 126 Kg = 20.5 x 3.0 " / 76 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.09
Metacentric height 0.4 ft / 0.1 m
Roll period: 11.0 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.42
Seaboat quality (Average = 1.00): 1.44
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.396
Length to Beam Ratio: 9.60 : 1
'Natural speed' for length: 12.55 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 35
Bow angle (Positive = bow angles forward): 19.40 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 13.94 ft / 4.25 m
- Forecastle (20 %): 8.20 ft / 2.50 m
- Mid (50 %): 6.56 ft / 2.00 m
- Quarterdeck (15 %): 5.74 ft / 1.75 m
- Stern: 4.92 ft / 1.50 m
- Average freeboard: 7.27 ft / 2.22 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 93.6 %
- Above water (accommodation/working, high = better): 81.3 %
Waterplane Area: 1,587 Square feet or 147 Square metres
Displacement factor (Displacement / loading): 144 %
Structure weight / hull surface area: 28 lbs/sq ft or 137 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.86
- Longitudinal: 4.09
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is cramped
Good seaboat, rides out heavy weather easily
Quoted
Displacement:
3,900 t light; 4,224 t standard; 4,631 t normal; 4,956 t full load
Dimensions: Length overall / water x beam x draught
328.08 ft / 328.08 ft x 60.70 ft x 14.76 ft (normal load)
100.00 m / 100.00 m x 18.50 m x 4.50 m
Armament:
4 - 11.02" / 280 mm guns (2x2 guns), 771.62lbs / 350.00kg shells, 1936 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
4 - 3.00" / 76.2 mm guns (2x2 guns), 13.23lbs / 6.00kg shells, 1936 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread, all raised mounts
8 - 3.00" / 76.2 mm guns (4x2 guns), 13.50lbs / 6.12kg shells, 1936 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships
12 - 1.46" / 37.0 mm guns (6x2 guns), 1.65lbs / 0.75kg shells, 1936 Model
Dual purpose guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 3,267 lbs / 1,482 kg
Shells per gun, main battery: 125
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 5.91" / 150 mm 164.04 ft / 50.00 m 9.84 ft / 3.00 m
Ends: Unarmoured
Main Belt covers 77 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 5.91" / 150 mm 1.97" / 50 mm 5.91" / 150 mm
2nd: 1.97" / 50 mm 1.97" / 50 mm 1.97" / 50 mm
3rd: 1.97" / 50 mm 1.97" / 50 mm 1.97" / 50 mm
4th: 0.98" / 25 mm - -
- Armour deck: 1.97" / 50 mm, Conning tower: 5.91" / 150 mm
Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 4,800 shp / 3,580 Kw = 16.07 kts
Range 4,000nm at 16.07 kts
Bunker at max displacement = 732 tons
Complement:
279 - 364
Cost:
£2.402 million / $9.610 million
Distribution of weights at normal displacement:
Armament: 357 tons, 7.7 %
Armour: 1,278 tons, 27.6 %
- Belts: 456 tons, 9.9 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 280 tons, 6.0 %
- Armour Deck: 507 tons, 10.9 %
- Conning Tower: 35 tons, 0.8 %
Machinery: 135 tons, 2.9 %
Hull, fittings & equipment: 2,080 tons, 44.9 %
Fuel, ammunition & stores: 731 tons, 15.8 %
Miscellaneous weights: 50 tons, 1.1 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
6,193 lbs / 2,809 Kg = 9.2 x 11.0 " / 280 mm shells or 1.8 torpedoes
Stability (Unstable if below 1.00): 1.18
Metacentric height 3.2 ft / 1.0 m
Roll period: 14.2 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.47
Seaboat quality (Average = 1.00): 1.14
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.551
Length to Beam Ratio: 5.41 : 1
'Natural speed' for length: 18.11 kts
Power going to wave formation at top speed: 44 %
Trim (Max stability = 0, Max steadiness = 100): 61
Bow angle (Positive = bow angles forward): 0.00 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 (20 %): 9.84 ft / 3.00 m
- Mid (50 %): 8.20 ft / 2.50 m
- Quarterdeck (20 %): 8.20 ft / 2.50 m
- Stern: 9.02 ft / 2.75 m
- Average freeboard: 9.25 ft / 2.82 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 70.4 %
- Above water (accommodation/working, high = better): 81.8 %
Waterplane Area: 13,914 Square feet or 1,293 Square metres
Displacement factor (Displacement / loading): 104 %
Structure weight / hull surface area: 119 lbs/sq ft or 580 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.71
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform
Quoted
Originally posted by Brockpaine
She reminds me more of the OTL Swedish pansarskepps, but slower.
Quoted
Originally posted by BrockpaineSpeaking of which... 16 knots is rather low... I'd advise at least a 20-knot speed just to keep her out of the way of the real battleships. At 16 knots she's just a target
Quoted
Originally posted by BrockpaineI'd see a 6x8" 21-knot or even 25-knot ship being significantly more useful than this.
This post has been edited 1 times, last edit by "Carthaginian" (Mar 10th 2008, 3:59pm)
Quoted
Tapi, Siamese Anti-Aircraft Escort laid down 1937
Displacement:
500 t light; 524 t standard; 576 t normal; 618 t full load
Dimensions: Length overall / water x beam x draught
239.52 ft / 229.66 ft x 26.25 ft x 8.20 ft (normal load)
73.00 m / 70.00 m x 8.00 m x 2.50 m
Armament:
4 - 3.00" / 76.2 mm guns in single mounts, 13.23lbs / 6.00kg shells, 1937 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread, 2 raised mounts - superfiring
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.65lbs / 0.75kg shells, 1937 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 66 lbs / 30 kg
Shells per gun, main battery: 300
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm - 1.97" / 50 mm
2nd: 0.98" / 25 mm - -
- Conning tower: 1.97" / 50 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 11,995 shp / 8,948 Kw = 29.05 kts
Range 2,500nm at 15.00 kts
Bunker at max displacement = 95 tons
Complement:
58 - 76
Cost:
£0.335 million / $1.340 million
Distribution of weights at normal displacement:
Armament: 8 tons, 1.4 %
Armour: 17 tons, 3.0 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 14 tons, 2.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 3 tons, 0.5 %
Machinery: 264 tons, 45.8 %
Hull, fittings & equipment: 210 tons, 36.4 %
Fuel, ammunition & stores: 77 tons, 13.3 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
248 lbs / 112 Kg = 18.3 x 3.0 " / 76 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.21
Metacentric height 1.0 ft / 0.3 m
Roll period: 11.3 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.30
Seaboat quality (Average = 1.00): 0.93
Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.408
Length to Beam Ratio: 8.75 : 1
'Natural speed' for length: 17.71 kts
Power going to wave formation at top speed: 71 %
Trim (Max stability = 0, Max steadiness = 100): 54
Bow angle (Positive = bow angles forward): 20.90 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 17.22 ft / 5.25 m
- Forecastle (20 %): 13.12 ft / 4.00 m
- Mid (65 %): 11.48 ft / 3.50 m
- Quarterdeck (15 %): 11.48 ft / 3.50 m
- Stern: 11.48 ft / 3.50 m
- Average freeboard: 12.51 ft / 3.81 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 160.5 %
- Above water (accommodation/working, high = better): 153.1 %
Waterplane Area: 3,870 Square feet or 359 Square metres
Displacement factor (Displacement / loading): 77 %
Structure weight / hull surface area: 26 lbs/sq ft or 129 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 3.48
- Overall: 0.61
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
Quoted
Enter ship name, Enter country Enter ship type laid down 1936
Displacement:
350 t light; 369 t standard; 414 t normal; 450 t full load
Dimensions: Length overall / water x beam x draught
173.88 ft / 173.88 ft x 24.61 ft x 8.20 ft (normal load)
53.00 m / 53.00 m x 7.50 m x 2.50 m
Armament:
2 - 3.94" / 100 mm guns in single mounts, 33.07lbs / 15.00kg shells, 1936 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.65lbs / 0.75kg shells, 1936 Model
Dual purpose guns in deck mounts
on side, all amidships
6 - 0.51" / 13.0 mm guns in single mounts, 0.07lbs / 0.03kg shells, 1936 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 73 lbs / 33 kg
Shells per gun, main battery: 250
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.57" / 40 mm - 1.57" / 40 mm
2nd: 0.98" / 25 mm - -
- Conning tower: 1.57" / 40 mm
Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 3,000 shp / 2,238 Kw = 20.05 kts
Range 4,000nm at 12.00 kts
Bunker at max displacement = 81 tons
Complement:
45 - 59
Cost:
£0.164 million / $0.656 million
Distribution of weights at normal displacement:
Armament: 8 tons, 2.0 %
Armour: 11 tons, 2.7 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 9 tons, 2.2 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 2 tons, 0.5 %
Machinery: 84 tons, 20.3 %
Hull, fittings & equipment: 213 tons, 51.4 %
Fuel, ammunition & stores: 64 tons, 15.6 %
Miscellaneous weights: 33 tons, 8.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
737 lbs / 334 Kg = 24.1 x 3.9 " / 100 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.13
Metacentric height 0.8 ft / 0.2 m
Roll period: 11.8 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.38
Seaboat quality (Average = 1.00): 1.67
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.413
Length to Beam Ratio: 7.07 : 1
'Natural speed' for length: 13.19 kts
Power going to wave formation at top speed: 63 %
Trim (Max stability = 0, Max steadiness = 100): 30
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 15.58 ft / 4.75 m
- Forecastle (20 %): 12.30 ft / 3.75 m
- Mid (50 %): 11.48 ft / 3.50 m
- Quarterdeck (15 %): 10.66 ft / 3.25 m
- Stern: 9.84 ft / 3.00 m
- Average freeboard: 11.70 ft / 3.57 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 92.2 %
- Above water (accommodation/working, high = better): 128.7 %
Waterplane Area: 2,655 Square feet or 247 Square metres
Displacement factor (Displacement / loading): 148 %
Structure weight / hull surface area: 38 lbs/sq ft or 184 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.79
- Longitudinal: 8.42
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
Quoted
Originally posted by Carthaginian
A slow PGB design for fisheries protection and general/ASW patrol duties. The hydrophones and depth charges in the design are oversized and inefficient to reflect their experimental status.
Quoted
Originally posted by Kaiser Kirk
Quoted
Originally posted by Carthaginian
The hydrophones and depth charges in the design are oversized and inefficient to reflect their experimental status.
If you're trying 'homegrown' designs that might make sense, otherwise you have friends with first line gear
Quoted
Originally posted by Kaiser KirkRA once noted on one of my small designs that a bow in the 6m range is useful for most seas, regardless of seaboat rating. May not be needed for the south china sea, but likely doesn't hurt anything to have a rise at the bow.
Quoted
Originally posted by Kaiser KirkOther than that, looks pretty good.
This post has been edited 3 times, last edit by "Carthaginian" (Apr 18th 2008, 10:49pm)
Quoted
Originally posted by HoOmAn
Not a bad design considering Siams limited resources. How many will be build?
Quoted
Originally posted by Carthaginian
Quoted
Originally posted by HoOmAn
Not a bad design considering Siams limited resources. How many will be build?
I'm planning at least one 6-unit production run for 1937. Further ships could be possible during 1938. I would need to contract some dock space from a willing nation to build 3 of the units, however, as Siam only has 3 drydocks capable of holding ships of this size.
Unfortunately, you can only do so much with a Type 0 drydock.
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