Abyss carried out a thruster replacement for the drilling rig Stena Dons during its stay at Vestbase in Kristiansund. The thruster replacement operation was completed in one day. In addition to this Abyss carried out an In-water survey/bottom survey of the rig, and changed the complete set of anodes for all thrusters.  These operations were carried out during five days.

Stena Don is a dynamically positioned (class 3), harsh environment semi-submersible drilling, completion and workover vessel for worldwide operations. 
It has 6 x Kameva Aqua Master Azimuth Thrusters.