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SpringSharp allows you to design "what-if" and "never built" warships between 1850 and 1950 using little more than the specifications in books like Janes Fighting Ships, Conway's All the World's Fighting Ships etc. It applies parametric formulas as used by professional Naval Architects (Mumford, Parsons, Holtrop & Mennen etc) as well as empirical data based on research on ships (Liners & Warships) of the period to give a soundly grounded and scientific basis to your designs. SpringSharp produces a written report in far more detail than the above resources. These reports can be used on various internet based discussion groups such as:
Sample Output File by Sven Fenske (reworked for Version 2.1)
Bismarck, Deutschland Battleship laid down 1936 Displacement: 40,064 t light; 42,084 t standard; 46,674 t normal; 50,346 t full load Dimensions: Length overall / water x beam x draught 820.21 ft / 792.49 ft x 118.11 ft x 30.51 ft (normal load) 250.00 m / 241.55 m x 36.00 m x 9.30 m Armament: 8 - 14.96" / 380 mm guns (4x2 guns), 1,763.70lbs / 800.00kg shells, 1934 Model Breech loading guns in turrets (on barbettes) on centreline ends, evenly spread, 2 raised mounts - superfiring 12 - 5.91" / 150 mm guns (6x2 guns), 102.98lbs / 46.71kg shells, 1928 Model Breech loading guns in turrets (on barbettes) on side, evenly spread 16 - 4.13" / 105 mm guns (8x2 guns), 35.32lbs / 16.02kg shells, 1933 Model Anti-aircraft guns in deck mounts with hoists on side, evenly spread, all raised mounts 16 - 1.46" / 37.0 mm guns (8x2 guns), 1.55lbs / 0.70kg shells, 1930 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts 16 - 0.79" / 20.0 mm guns (10 mounts), 0.29lbs / 0.13kg shells, 1930 Model Anti-aircraft guns in deck mounts on side, evenly spread, 14 raised mounts Weight of broadside 15,940 lbs / 7,230 kg Shells per gun, main battery: 120 Armour: - Belts: Width (max) Length (avg) Height (avg) Main: 12.6" / 320 mm 562.34 ft / 171.40 m 16.40 ft / 5.00 m Ends: 2.76" / 70 mm 229.33 ft / 69.90 m 9.51 ft / 2.90 m 0.82 ft / 0.25 m Unarmoured ends Upper: 5.71" / 145 mm 562.34 ft / 171.40 m 7.22 ft / 2.20 m Main Belt covers 109 % of normal length - Torpedo Bulkhead: 1.77" / 45 mm 562.34 ft / 171.40 m 30.05 ft / 9.16 m - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) Main: 14.2" / 360 mm 7.09" / 180 mm 13.4" / 340 mm 2nd: 3.94" / 100 mm 1.30" / 33 mm 3.15" / 80 mm 3rd: 0.79" / 20 mm 0.39" / 10 mm 0.79" / 20 mm - Armour deck: 5.02" / 128 mm, Conning tower: 13.78" / 350 mm Machinery: Oil fired boilers, steam turbines, Geared drive, 3 shafts, 137,994 shp / 102,944 Kw = 28.67 kts Range 8,525nm at 19.00 kts Bunker at max displacement = 8,261 tons Complement: 1,587 - 2,064 Cost: £18.680 million / $74.720 million Distribution of weights at normal displacement: Armament: 1,903 tons, 4.1 % Armour: 17,160 tons, 36.8 % - Belts: 6,165 tons, 13.2 % - Torpedo bulkhead: 1,108 tons, 2.4 % - Armament: 3,305 tons, 7.1 % - Armour Deck: 6,198 tons, 13.3 % - Conning Tower: 385 tons, 0.8 % Machinery: 3,872 tons, 8.3 % Hull, fittings & equipment: 17,046 tons, 36.5 % Fuel, ammunition & stores: 6,610 tons, 14.2 % Miscellaneous weights: 83 tons, 0.2 % Overall survivability and seakeeping ability: Survivability (Non-critical penetrating hits needed to sink ship): 79,862 lbs / 36,225 Kg = 47.7 x 15.0 " / 380 mm shells or 14.4 torpedoes Stability (Unstable if below 1.00): 1.26 Metacentric height 9.7 ft / 3.0 m Roll period: 15.9 seconds Steadiness - As gun platform (Average = 50 %): 50 % - Recoil effect (Restricted arc if above 1.00): 0.30 Seaboat quality (Average = 1.00): 1.05 Hull form characteristics: Hull has a flush deck Block coefficient: 0.572 Length to Beam Ratio: 6.71 : 1 'Natural speed' for length: 28.15 kts Power going to wave formation at top speed: 50 % Trim (Max stability = 0, Max steadiness = 100): 47 Bow angle (Positive = bow angles forward): 32.00 degrees Stern overhang: 9.68 ft / 2.95 m Freeboard (% = measuring location as a percentage of overall length): - Stem: 28.87 ft / 8.80 m - Forecastle (16 %): 21.16 ft / 6.45 m - Mid (50 %): 18.60 ft / 5.67 m - Quarterdeck (13 %): 21.16 ft / 6.45 m - Stern: 22.31 ft / 6.80 m - Average freeboard: 20.82 ft / 6.35 m Ship tends to be wet forward Ship space, strength and comments: Space - Hull below water (magazines/engines, low = better): 71.1 % - Above water (accommodation/working, high = better): 159.1 % Waterplane Area: 66,686 Square feet or 6,195 Square metres Displacement factor (Displacement / loading): 116 % Structure weight / hull surface area: 196 lbs/sq ft or 959 Kg/sq metre Hull strength (Relative): - Cross-sectional: 0.99 - Longitudinal: 1.07 - Overall: 1.00 Hull space for machinery, storage, compartmentation is excellent Room for accommodation and workspaces is excellent
SpringSharp 3.0 Preview
SpringSharp 3 is a major, major, major rewrite of Springsharp. Major structural changes, whilst invisible, have been made - 80% of the code has been changed or replaced. Even this underestimates the effort put into this update. Research and experimentation has taken up a lot of the time since the last release.
Given how long it has been since the last update and how much work has been done we thought it was necessary to release the first beta now and as widely as possible rather than use the closed beta testing of the last update.
If you trial this Beta - Please send me copies of ships that you have developed with it, especially real world ships. If you find problems or find bugs please bear in mind that this is a beta and an early beta. THERE WILL BE MANY BUGS WITH THIS PROGRAM. Please do not just criticise, send us your problems, comments and recommendations (and what you like about it) to email@example.com.
Download SpringSharp 3.0 beta 2 and test ships
SpringSharp 3.0 beta 3
Changes in this version include a far more modular structure - which has greatly shrunk the program and improved it's speed especially on Vista with a Pentium 4. Most outstanding features are now enabled.
We have left the previous beta online because of the major structural and framework change. Please advise of any instabilities or problems with this initial release of this beta. Once these are found and resolved a stable version of beta 3 will be released (with a change log).
Change Log SpringSharp 3.0 beta 1 to SpringSharp 3.0 beta 2
Contributors and References
Programmers: James Ross-Gowan and Ian Ross-Gowan
Original Concept: SpringSharp is based on Rick Robinson's SpringStyle
Beta Testers and Contributors:Gavin Bishop (Red Admiral), Cliff James (Kaiser), Stephan Pissors (HoOmAn), Sven Fenske (SVe), Bernard Rohrer and others
References - A life's worth of interest and study of Naval technology and history including:
E.H.H. Archibald, The Fighting Ship in the Royal Navy 897-1984
J, Bastock, Australian Ships of War, Ships on the Australia Station
D.K. Brown, Before the Ironclad, Warrior to Dreadnought, Nelson to Vanguard and Rebuilding the Royal Navy
J. Campbell, Naval Weapons of World War II
V Cassells, The Capital Ships, The Destroyers
Conway's All the Worlds Warships 1860-1905, 1906-1921, 1922-1946, 1947-1995
Conway's History of the Ship - Various
T. Gibbons, The Encyclopaedia of Ships, The Complete Encyclopaedia of Battleships and Battlecruisers
R Gillet - various
D. Griffiths, Steam at Sea
J. Holtrop, An Approximate Power Prediction Method (with G.G.J. Mennen), A Statistical Re-Analysis of Resistance and Propulsion data
Dr D.A Hudson, Resistance and Propulsion
Janes Fighting Ships - Various
A. Kludas, Great Passenger Ships of the World Volume 2 & 3
D. Lyon, The First Destroyers
R. Munro-Smith, Applied Naval Architecture
M.G. Parsons, Parametric Design
A. Preston - various
A. Raven, Dido Class Cruisers (with H.T Lenton), King George the Fifth Battleships
N. Rivett, The Naval Steam Reciprocating Engine
Warship - Various
R. Watton, Anatomny of the Ship, The Battleship Warspite.
M.J. Whitley - Battleships of World War Two
Icon Theme - Oxygen Project LGPL
Web Design & HTML - James Ross-Gowan