Sea Cage

A full-scale sea cage is studied in irregular short-crested waves.

• Full-scale sea-cage: 157m circumference, 20m deep, and a 15m cone.
• Standard mooring system: 4 corner buoys (4000l), crow feet with three cables, and a mooring frame at 5m depth.
• Rough sea state: 0.5m s-1 current, and irregular waves with a 2.5m significant wave height and 6s mean period.

Bottom Trawling

Simulation of a full-sized bottom trawl system using FhSim

• Full-sized trawl: Mørenot 520, 2 trawl doors at 8m², and a warp length of 500m.
• Towing: Basic ship model at 4 knots, with a towing depth of 190m.

Boat and Net Cage Interaction

Simulation of a typical aquaculture operation.

• Full-scale net cage: Placed in a standard mooring frame, and affected by irregular seas
• Events: The boat first approaches the net cage. The crane on the boat is then attached to the coupling plate of the mooring frame. Finally, the the boat winches the coupling plate to the surface.

Pitch damping with foils

Exploring optimal foil design and position to dampen vessel pitch movements.

• Pitch damping with foils: Vessels with smal length compared to other hull dimensions often have challenges with large pitch motions. This video shows simultaneous simulation of two vessels in the exact same seastate.
• The foreground vessel: This vessel has fitted a pitch-damping foil forward in the hull.
• The shadow vessel: This vessel has the same hull as the other, but is not fitted with pitch-damping foils.

Fish farm

Simulation of a fish farm with multiple net cages

The project RACE at SINTEF Ocean hasdeveloped methods to create simulations of fish farms consisting of multiple net cages based on limited user input.

Risk of trawl doors snagging on offshore pipeline

Using batch simulation for finding how combinations of free span height and length affects the risk of trawl door snagging.

The ability to have FhSim perform parameter variations was used to evaluate how different parameters affected the risk of having trawl doors snagging on offshore pipelines. Typical parameters which were considered were span height, span length, pipeline diameter, angle between pipeline and trawling direction.

State estimation fro double trawl.

Using FhSim built-in methods for state estimation.

Trawl impact on mooring

Analysis of the impact a trawl can do on mooring lines.

Structures in ice floe

Simulation of interactions between structures and ice floe.

Anchored, floating structure in ice floe

Vessel in ice floe