Vessels used for under water construction work, as well as for support for under water operations. Normally equipped with larger cranes, dynamic positioning system (DP), helipads and with a high degree of manning capacity.
It is mainly being used for moving of rigs, putting out anchors, as well as for supply services. They are normally larger and more expensive vessel, and equipped with winches and cranes. The North-Sea is being dominated by larger AHTS’s, between 12.000-25.000 HP. Smaller share of vessel on firm contracts.
It carries goods, water, drilling mud, chemicals, etc. to and from the offshore installations. Larger share of vessel on longer, firm contracts.
HAVILA TROLL (RRV) Rescue- and recovery vessel. It covers security services, such as oil spill preparedness, fire protection and operation of rescue- and recovery at the oil installations.Read the story