Test facilities

The Ocean Basin Laboratory is used for studying basic as well as applied ship and offshore problems. A total environmental simulation including wind, waves and current offers unique testing conditions for models of all types of fixed and floating structures. A water depth of 10 metres offers excellent testing possibilities for deep water structures intended for the offshore industry in future. The Ocean basin is operated by MARINTEK , but NTNU has access to the facility through a co-operation agreement.

Applications

• Seakeeping
• Ship manoeuvring
• Fixed and floating structures
• Mooring systems
• Energy production from the sea
• Floating islands
• Offshore loading systems
• Offshore floating production
• Offshore marine operations
• Subsea systems and operations
• Pipelines

Ocean basin laboratory data

• Length: 80 m
• Width: 50 m
• Depth: 0-10 m Maximum current velocity approx. 0.2 m/s at 5 m water depth.
• Down at 7.5 m water depth maximum current velocity is approx. 0.15 m/s.

Double flap wave maker

• Hydraulic driven, hinged double-flap type.
• Wave characteristics:
• Regular waves. Maximum wave height: 0.9 m.
• Wave periods: 0.8 s and above.
• Wave spectra: Computer generated or from magnetic tape.

Multiflap wave maker

• Electrically driven, hinged single-flap type.
• 144 individually controlled flaps.
• Wave characteristics:
• Regular waves: Maximum wave height: 0.4 m.
• Wave periods: 0.6 s and above.
• Wave spectra: Computer generated shortcrested or longcrested waves of specified direction.

The carriage system follows free running models with no constraints at speed up to 5 m/s, at any heading to the waves.

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