Wilhelmsen Ship Management (WSM) is a part of Wilhelmsen Maritime Services, a Wilh. Wilhelmsen Group company. WSM is one of the world’s largest third party ship manager with a portfolio of more than 400 vessels and 10,500 active seafarers. WSM provides technical and crew management services for various vessel segments. Other key services include dry docking, lay-up, new building supervision, Inventory of Hazardous Materials (IHM) and green ship recycling.