OSM Maritime and Thome to merge to strengthen position as a world leader within ship management

OSM Maritime Group and Thome Group have agreed to a merger of the two companies. By joining forces, the companies will be building an even stronger platform on which they will continue to deliver world-class ship management services to their customers and continue to improve. The combined company will be named OSM Thome.

“By joining our resources in OSM Thome, we will become an even better partner to our customers. With our emphasis on safe and efficient operations as well as innovation, our ambition is to make the combined company even more relevant and attractive to customers, employees, and seafarers. Our companies are a good match in terms of expertise and capacity, and we share a common agenda on important areas such as digitalisation, cyber security and green shipping,” says Finn Amund Norbye, Group CEO of OSM Maritime Group.

Both OSM Maritime and Thome are deeply rooted in the Norwegian shipping tradition and expertise, and they combine this with the modern drive of Asian business enterprise. The headquarters of the combined company will be located in Arendal, Norway, with strong technical management hubs maintained in Singapore and Europe.

“Together, the two companies have a total of 31,000 employees, whereof 2,000 onshore in 22 countries, representing a diversity of expertise and experience. It is the people that enable us to deliver top quality and sustainable solutions to our customers. We operate across all the world’s oceans, and the efforts of our 29,000 seafarers are key for the position we have gained within international shipping,” says Olav Nortun, Group CEO of Thome Group.

Today, the two companies manage 1,000 ships, whereof 450 ships on full technical management, and 550 ships on crew management. Many of the world’s leading shipping companies are customers of OSM and Thome, and the fleet consists of different segments such as tank, bulk, container, car carriers, cruise ships and offshore vessels and units.

Completion of the merger of the two companies is conditional upon approval from the competition and other relevant authorities, which is anticipated during the first quarter of 2023. Until the merger has been formally approved, the two companies will operate as before, with separate management and organisations.

OSM Maritime’s CEO Finn Amund Norbye will assume the role of CEO for the merged OSM Thome, while Thome’s CEO, Olav Nortun, will take up the position of COO for the consolidated ship management activities. OSM founder Bjørn Tore Larsen will become Chairman of the new Board of Directors and Thome’s Claes Eek Thorstensen will be the Vice Chairman.


About OSM Maritime Group

OSM Maritime Group provides Ship Management services to the Offshore and Maritime industries. OSM’s core services are technical and crew management while at the same time, it offers services that relate to and improve those core services.

These are New Building supervision, Marine Insurance and Claim Handling, OSERV Catering, Nordic Medical Clinic, Training, accounting outsourcing and more. With a global footprint and a focus on its most important asset, its people, OSM Maritime Group offers flexibility and opportunity for clients to expand their presence in new regions and the peace of mind that comes with a lean and efficient setup.

OSM was established in Arendal in 1989 and is now represented at 21 different locations around the world. 1.000 employees onshore and 16,000 seafarers from 70 countries are involved in the day-to-day operation of nearly 700 ships of various types.

More information about OSM Maritime Group is available at: https://osm.no/


About Thome Group

Thome is a dynamic provider of integrated services to the international shipping and offshore industries. From ship management, and offshore management, to crewing and training, Thome offers a complete range of products and services essential in managing a wide range of global marine assets.

Thome also provides a number of ancillary services to its clients including newbuilding and conversion project management, marine consultancy, ship agency and marine services.

Thome was established in Singapore in 1963 and has been run as a family business since its humble beginnings, growing into a world leader within ship management that it is today. The company has a presence in 11 countries and around 900 employees onshore. More than 13,000 seafarers are involved in the day-to-day operation of nearly 370 ships.

More information about Thome Group is available at: https://thome.com


For further information, please contact:

All press statements and comments will be provided by the two CEOs – Mr. Finn Amund Norbye and Mr. Olav Nortun. However, press-related enquiries will be attended to and managed by the following:


Elaborate Communications

Name: Phil Page

Position: Account Manager

Tel: +44(0) 1296 68250

E-mail: ppage@elabor8.co.uk