Towing tank
The towing tank has many applications, primarily concerning hull and propeller form optimisation for all kinds of ships or energy saving devices with respect to resistance/ propulsion. A database containing over 8,000 ship hull forms provides the basis for the result analysis.
The tank dimensions and the high carriage speed facilitate the use of large, self-propelled displacement models and testing of high-speed vessels (mono- and multihulls, semi-planing and planing craft, surface effect ships, etc.).
The flap type wave generators provide regular as well as irregular waves for the determination of seakeeping characteristics and ride comfort. By combining the results with a SEAMAN Simulation behavior in oblique seas can be estimated. Arrangements and techniques for testing submersibles (submarines and other underwater vehicles), sailing boats, and fishing gear are available, and various unconventional objects can also be investigated.
A database containing over 8,000 ship hull forms provides the basis for result analysis and guidance for hull form optimisation of merchant ships, as well as high-speed and planing crafts. In-house research activities ensure enhanced knowledge and the continuous development of methods within the field of ship hydrodynamics.
Technical data
| Basin | L x B x D | 260 x 10 x 5 m |
| Carriage |
Speed Speed accuracy |
0 - 11 m/sec ± 0.001 m/sec |
| Waves |
Wave length Wave height Frequencies |
0.4 < lambda < inf. m 0 < H < 0.3 m 0 < f < 2 Hz |
A fair trial – how to obtain the correct EEDI
IMO recently passed a resolution on the Energy Efficiency Design Index (EEDI). This index is a measure of the amount of carbon dioxide a ship emits in relation to its cargo capacity and speed. A ship’s EEDI value must not exceed the allowable limit set by IMO. SSPA can help derive the hydrodynamic part of the EEDI value for new ships.
How to sail an Olympic Laser class dinghy - towing tank tests
The Laser dinghy is a strict one-design Olympic class and very few, if any, alterations are allowed. So what can be done in a towing tank to provide new insights for sailors?