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 Jefgte |
200t Coastal Torpedo Boat |
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Posts: 626 ( 3-Nov-2008 14:11:48) |
Peru hope to build 200t coastal torpedo boat to defend harbors & coastal escort (harbor to harbor)
2 ships per year in Arica & Autofagasta Slipway (dim.70mx12) Laid down 1915 Engine 1912 200t light QF guns -3"-2" - 0.5mg TT 18" or 21" Cross-sectional : 0.50 mini Thanks ... |
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Dave Bender |
Go a little bigger. German TB1916. | ||||||||||||||||||||||||||||||||||||||||||
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Posts: 7302 ( 3-Nov-2008 18:12:15) |
http://www.german-navy.de...doboats/tb1916/index.html
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Jefgte |
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Posts: 627 ( 4-Nov-2008 00:36:03) |
Thanks Dave
This TB is too big but I retain the global concept 1 or 2x3" 2TTx457 I prefer to use petrol motors. Harbor Flotilla could make high speed quickly. Very useful if enemy squadron attack the harbor. Jef |
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Dave Bender |
Prefer to use petrol motors | ||||||||||||||||||||||||||||||||||||||||||
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Posts: 7313 ( 5-Nov-2008 15:10:13) |
http://www.wwiaviation.co...gines/Austro-Daimler.html
In 1915? The 225 hp Daimler is cutting edge. If you use a 1912 engine as your specifications call for then your engine will be 100 hp. Your 200 ton torpedo boat is likely to have a top speed no greater then 20 kts. |
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Hvidtfeldt |
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Posts: 300 ( 5-Nov-2008 20:44:07) |
Just before WW1,The danish navy actually built 3 classes of 3 boats each which seems to fit these requirements.
Boats were 180-230 tons, about 26 knots , 1 or 2 75 mm guns and 4 or 5 18 inch torpedeoes . !911 British type 1912 German type 1913 Danish type The 75 mm guns were special designed for the torpedo boats, being short (abot 30 calibers) and easily manouverable 
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korpen |
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Posts: 247 ( 8-Nov-2008 11:36:20) |
You might recognise it from somewhere else, but it should meet most of your requirements… 1914 Mini IV, Netherlands Torpedoboot laid down 1914 (Engine 1912)
Displacement: 200 t light; 207 t standard; 243 t normal; 271 t full load Dimensions: Length overall / water x beam x draught 204,30 ft / 196,85 ft x 16,40 ft x 6,66 ft (normal load) 62,27 m / 60,00 m x 5,00 m x 2,03 m Armament: 2 - 3,46" / 88,0 mm guns in single mounts, 19,84lbs / 9,00kg shells, 1914 Model Quick firing guns in deck mounts on centreline ends, evenly spread 2 - 0,31" / 8,0 mm guns in single mounts, 0,02lbs / 0,01kg shells, 1914 Model Machine guns in deck mounts on side, all amidships Weight of broadside 40 lbs / 18 kg Shells per gun, main battery: 100 3 - 17,7" / 450 mm above water torpedoes Armour: - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 0,20" / 5 mm - - Machinery: Oil fired boilers, steam turbines, Direct drive, 2 shafts, 6 710 shp / 5 006 Kw = 27,30 kts. Range 2 750nm at 12,00 kts, 275nm at 27,30 kts Bunker at max displacement = 64 tons Complement: 29 - 39 Cost: £0,037 million / $0,147 million Distribution of weights at normal displacement: Armament: 5 tons, 2,1 % Armour: 1 tons, 0,3 % - Belts: 0 tons, 0,0 % - Torpedo bulkhead: 0 tons, 0,0 % - Armament: 1 tons, 0,3 % - Armour Deck: 0 tons, 0,0 % - Conning Tower: 0 tons, 0,0 % Machinery: 124 tons, 51,2 % Hull, fittings & equipment: 68 tons, 27,8 % Fuel, ammunition & stores: 42 tons, 17,5 % Miscellaneous weights: 3 tons, 1,0 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 55 lbs / 25 Kg = 2,6 x 3,5 " / 88 mm shells or 0,1 torpedoes Stability (Unstable if below 1.00): 1,20 Metacentric height 0,5 ft / 0,1 m Roll period: 10,1 seconds Steadiness - As gun platform (Average = 50 %): 56 % - Recoil effect (Restricted arc if above 1.00): 0,25 Seaboat quality (Average = 1.00): 0,80 Hull form characteristics: Hull has raised forecastle, rise forward of midbreak Block coefficient: 0,395 Length to Beam Ratio: 12,00 : 1 'Natural speed' for length: 14,03 kts Power going to wave formation at top speed: 67 % Trim (Max stability = 0, Max steadiness = 100): 70 Bow angle (Positive = bow angles forward): 30,00 degrees Stern overhang: 0,82 ft / 0,25 m Freeboard (% = measuring location as a percentage of overall length): - Stem: 11,48 ft / 3,50 m - Forecastle (18 %): 10,66 ft / 3,25 m (6,56 ft / 2,00 m aft of break) - Mid (30 %): 6,56 ft / 2,00 m (6,23 ft / 1,90 m aft of break) - Quarterdeck (15 %): 6,23 ft / 1,90 m - Stern: 7,38 ft / 2,25 m - Average freeboard: 7,22 ft / 2,20 m Ship tends to be wet forward Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 182,2 % - Above water (accommodation/working, high = better): 44,6 % Waterplane Area: 1 982 Square feet or 184 Square metres Displacement factor (Displacement / loading): 42 % Structure weight / hull surface area: 16 lbs/sq ft or 80 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0,50 - Longitudinal: 1,60 - Overall: 0,56 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 |
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Jefgte |
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Posts: 628 (16-Nov-2008 01:11:34) |
Thanks for all your suggests
Here is the actually design for Peru Armada 200t, Peru CTB laid down 1915 (Engine 1912) Displacement: 200 t light; 206 t standard; 218 t normal; 228 t full load Dimensions: Length overall / water x beam x draught 178.31 ft / 177.17 ft x 16.88 ft x 6.46 ft (normal load) 54.35 m / 54.00 m x 5.15 m x 1.97 m Armament: 1 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1915 Model Quick firing gun in deck mount on centreline 2 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1915 Model Machine guns in deck mounts on side, evenly spread Weight of broadside 14 lbs / 6 kg Shells per gun, main battery: 150 2 - 21.0" / 533.4 mm above water torpedoes Armour: - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 0.79" / 20 mm - - 2nd: 0.50" / 13 mm - - Machinery: Petrol Internal combustion motors, Direct drive, 2 shafts, 6 800 shp / 5 073 Kw = 27.26 kts Range 200nm at 21.00 kts Bunker at max displacement = 22 tons Complement: 27 - 36 Cost: £0.036 million / $0.145 million Distribution of weights at normal displacement: Armament: 2 tons, 0.8 % Armour: 1 tons, 0.6 % - Belts: 0 tons, 0.0 % - Torpedo bulkhead: 0 tons, 0.0 % - Armament: 1 tons, 0.6 % - Armour Deck: 0 tons, 0.0 % - Conning Tower: 0 tons, 0.0 % Machinery: 118 tons, 54.1 % Hull, fittings & equipment: 75 tons, 34.6 % Fuel, ammunition & stores: 18 tons, 8.1 % Miscellaneous weights: 4 tons, 1.8 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 61 lbs / 28 Kg = 4.5 x 3.0 " / 76 mm shells or 0.1 torpedoes Stability (Unstable if below 1.00): 1.08 Metacentric height 0.4 ft / 0.1 m Roll period: 11.1 seconds Steadiness - As gun platform (Average = 50 %): 62 % - Recoil effect (Restricted arc if above 1.00): 0.12 Seaboat quality (Average = 1.00): 0.89 Hull form characteristics: Hull has raised forecastle Block coefficient: 0.395 Length to Beam Ratio: 10.50 : 1 'Natural speed' for length: 13.31 kts Power going to wave formation at top speed: 71 % Trim (Max stability = 0, Max steadiness = 100): 69 Bow angle (Positive = bow angles forward): 5.00 degrees Stern overhang: 0.00 ft / 0.00 m Freeboard (% = measuring location as a percentage of overall length): - Stem: 13.12 ft / 4.00 m - Forecastle (18 %): 11.15 ft / 3.40 m (10.17 ft / 3.10 m aft of break) - Mid (50 %): 7.55 ft / 2.30 m - Quarterdeck (15 %): 7.22 ft / 2.20 m - Stern: 6.56 ft / 2.00 m - Average freeboard: 8.60 ft / 2.62 m Ship tends to be wet forward Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 182.7 % - Above water (accommodation/working, high = better): 56.5 % Waterplane Area: 1 836 Square feet or 171 Square metres Displacement factor (Displacement / loading): 39 % Structure weight / hull surface area: 18 lbs/sq ft or 86 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.50 - Longitudinal: 3.60 - Overall: 0.61 Hull space for machinery, storage, compartmentation is cramped Room for accommodation and workspaces is cramped Poor seaboat, wet and uncomfortable, reduced performance in heavy weather |
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