S-101, Brandenburg Torpedobooten laid down 1917 (Engine 1916)
Displacement:
500 t light; 517 t standard; 611 t normal; 686 t full load
Dimensions: Length overall / water x beam x draught
229.65 ft / 225.66 ft x 22.57 ft x 10.33 ft (normal load)
70.00 m / 68.78 m x 6.88 m x 3.15 m
Armament:
1 - 3.46" / 88.0 mm guns in single mounts, 22.05lbs / 10.00kg shells, 1906 Model
Quick firing gun in deck mount
on centreline forward
2 - 1.97" / 50.0 mm guns in single mounts, 3.86lbs / 1.75kg shells, 1905 Model
Quick firing guns in deck mounts
on side, all amidships
2 - 0.30" / 7.7 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1905 Model
Machine guns in deck mounts
on side, all forward, all raised mounts - superfiring
Weight of broadside 30 lbs / 14 kg
Shells per gun, main battery: 250
4 - 19.7" / 500 mm above water torpedoes
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 18,000 shp / 13,428 Kw = 30.19 kts
Range 5,000nm at 12.00 kts
Bunker at max displacement = 169 tons
Complement:
60 - 79
Cost:
£0.121 million / $0.482 million
Distribution of weights at normal displacement:
Armament: 4 tons, 0.6 %
Machinery: 327 tons, 53.6 %
Hull, fittings & equipment: 155 tons, 25.4 %
Fuel, ammunition & stores: 111 tons, 18.1 %
Miscellaneous weights: 14 tons, 2.3 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
135 lbs / 61 Kg = 6.5 x 3.5 " / 88 mm shells or 0.2 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 %): 57 %
- Recoil effect (Restricted arc if above 1.00): 0.08
Seaboat quality (Average = 1.00): 0.71
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.406
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 15.02 kts
Power going to wave formation at top speed: 72 %
Trim (Max stability = 0, Max steadiness = 100): 80
Bow angle (Positive = bow angles forward): 14.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 16.01 ft / 4.88 m
- Forecastle (20 %): 12.01 ft / 3.66 m
- Mid (40 %): 12.01 ft / 3.66 m (8.01 ft / 2.44 m aft of break)
- Quarterdeck (15 %): 8.01 ft / 2.44 m
- Stern: 8.01 ft / 2.44 m
- Average freeboard: 9.93 ft / 3.03 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 180.3 %
- Above water (accommodation/working, high = better): 48.4 %
Waterplane Area: 3,147 Square feet or 292 Square metres
Displacement factor (Displacement / loading): 44 %
Structure weight / hull surface area: 23 lbs/sq ft or 113 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.33
- Overall: 0.58
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is extremely poor
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather
4t = 4 Torpedoes
10t = 30 Depth Charges
Like most emergency designs, it's okay. It'll certainly do for screening your larger units.
Did you consider a L:B ratio of around 11:1 and slighter deeper draught? Or do you prefer 10:1 as a design feature?
Design Specifications:
1.) Must fit in Type 0 Slipway
2.) 30kts or greater speed
3.) 5000@ 12kts or better range
4.) 500t or less
If I decrease beam to get 11:1 it kills the steadiness, but w/ the deeper draft does improve sea keeping, but only to 0.78.
Steadiness will suffer, but shooting at stuff is probably third on her to-do list behind depth-charging stuff and torpedoing stuff.
Quote from: The Rock Doctor on July 16, 2009, 08:32:06 AM
Steadiness will suffer, but shooting at stuff is probably third on her to-do list behind depth-charging stuff and torpedoing stuff.
Actually it's fifth. Behind Depth-Charging stuff, Torpedoing stuff, scouting stuff, and running away from stuff. ;)
with one gun she's not going to hit much at medium or long range anyway...
still better than the 5cm armed DKB GTBs though :)
S-101, Brandenburg Torpedobooten laid down 1917 (Engine 1916)
Displacement:
499 t light; 516 t standard; 611 t normal; 687 t full load
Dimensions: Length overall / water x beam x draught
229.65 ft / 225.66 ft x 20.51 ft x 10.83 ft (normal load)
70.00 m / 68.78 m x 6.25 m x 3.30 m
Armament:
1 - 3.46" / 88.0 mm guns in single mounts, 22.05lbs / 10.00kg shells, 1906 Model
Quick firing gun in deck mount
on centreline forward
2 - 1.97" / 50.0 mm guns in single mounts, 3.86lbs / 1.75kg shells, 1905 Model
Quick firing guns in deck mounts
on side, all amidships
2 - 0.30" / 7.7 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1905 Model
Machine guns in deck mounts
on side, all forward, all raised mounts - superfiring
Weight of broadside 30 lbs / 14 kg
Shells per gun, main battery: 250
4 - 19.7" / 500 mm above water torpedoes
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 18,000 shp / 13,428 Kw = 30.19 kts
Trial Speed = 32.65 kts
Range 5,000nm at 12.00 kts
Bunker at max displacement = 171 tons
Complement:
60 - 79
Cost:
£0.121 million / $0.482 million
Distribution of weights at normal displacement:
Armament: 4 tons, 0.6 %
Machinery: 327 tons, 53.6 %
Hull, fittings & equipment: 155 tons, 25.3 %
Fuel, ammunition & stores: 112 tons, 18.3 %
Miscellaneous weights: 14 tons, 2.3 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
131 lbs / 60 Kg = 6.3 x 3.5 " / 88 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 0.6 ft / 0.2 m
Roll period: 11.5 seconds
Steadiness - As gun platform (Average = 50 %): 53 %
- Recoil effect (Restricted arc if above 1.00): 0.11
Seaboat quality (Average = 1.00): 0.78
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.427
Length to Beam Ratio: 11.00 : 1
'Natural speed' for length: 15.02 kts
Power going to wave formation at top speed: 71 %
Trim (Max stability = 0, Max steadiness = 100): 68
Bow angle (Positive = bow angles forward): 14.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 16.01 ft / 4.88 m
- Forecastle (20 %): 12.01 ft / 3.66 m
- Mid (40 %): 12.01 ft / 3.66 m (8.01 ft / 2.44 m aft of break)
- Quarterdeck (15 %): 8.01 ft / 2.44 m
- Stern: 8.01 ft / 2.44 m
- Average freeboard: 9.93 ft / 3.03 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 180.3 %
- Above water (accommodation/working, high = better): 40.5 %
Waterplane Area: 2,899 Square feet or 269 Square metres
Displacement factor (Displacement / loading): 44 %
Structure weight / hull surface area: 22 lbs/sq ft or 109 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.69
- Overall: 0.59
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is extremely poor
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather
4t = 4 Torpedoes
10t = 30 Depth Charges
Upgunned, and probably final version.
S-101, Brandenburg Torpedobooten laid down 1917 (Engine 1916)
Displacement:
500 t light; 524 t standard; 611 t normal; 681 t full load
Dimensions: Length overall / water x beam x draught
229.65 ft / 225.66 ft x 20.51 ft x 10.83 ft (normal load)
70.00 m / 68.78 m x 6.25 m x 3.30 m
Armament:
2 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1906 Model
Quick firing guns in deck mounts
on centreline ends, evenly spread
2 - 1.97" / 50.0 mm guns in single mounts, 3.86lbs / 1.75kg shells, 1905 Model
Quick firing guns in deck mounts
on side, all amidships
2 - 0.30" / 7.7 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1905 Model
Machine guns in deck mounts
on side, all forward, all raised mounts - superfiring
Weight of broadside 78 lbs / 36 kg
Shells per gun, main battery: 250
4 - 19.7" / 500 mm above water torpedoes, 2 sets of twin launchers, stacked amidships.
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 18,000 shp / 13,428 Kw = 30.19 kts
Trial Speed = 32.57 kts
Range 4,600nm at 12.00 kts
Bunker at max displacement = 157 tons
Complement:
60 - 79
Cost:
£0.128 million / $0.510 million
Distribution of weights at normal displacement:
Armament: 10 tons, 1.6 %
Machinery: 317 tons, 51.9 %
Hull, fittings & equipment: 159 tons, 26.0 %
Fuel, ammunition & stores: 111 tons, 18.2 %
Miscellaneous weights: 14 tons, 2.3 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
128 lbs / 58 Kg = 3.6 x 4.1 " / 105 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 0.6 ft / 0.2 m
Roll period: 11.5 seconds
Steadiness - As gun platform (Average = 50 %): 52 %
- Recoil effect (Restricted arc if above 1.00): 0.29
Seaboat quality (Average = 1.00): 0.78
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.427
Length to Beam Ratio: 11.00 : 1
'Natural speed' for length: 15.02 kts
Power going to wave formation at top speed: 71 %
Trim (Max stability = 0, Max steadiness = 100): 67
Bow angle (Positive = bow angles forward): 14.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 16.01 ft / 4.88 m
- Forecastle (20 %): 12.01 ft / 3.66 m
- Mid (40 %): 12.01 ft / 3.66 m (8.01 ft / 2.44 m aft of break)
- Quarterdeck (15 %): 8.01 ft / 2.44 m
- Stern: 8.01 ft / 2.44 m
- Average freeboard: 9.93 ft / 3.03 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 183.2 %
- Above water (accommodation/working, high = better): 40.5 %
Waterplane Area: 2,899 Square feet or 269 Square metres
Displacement factor (Displacement / loading): 43 %
Structure weight / hull surface area: 23 lbs/sq ft or 112 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.77
- Overall: 0.59
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is extremely poor
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather
4t = 4 Torpedoes
10t = 30 Depth Charges
I'm liking that last one better.
Hmm, the ant approach. A 100 of these are a menace to the world.
...Shorter range is not a problem...
...Speed is also enough to work with the fleet...
because, this class is made for coastal operations.
Good concept
;)