Thome Ship Management Announces Series of Senior Key Appointments. Thome Ship Management, one of the world’s leading independent third party ship managers, has appointed Steffen Tunge as Director and new Chief Operating Officer for its Tanker Fleet. His appointment is effective immediately. Steffen Tunge’s arrival at Thome brings onboard a vast amount of experience from the tanker industry and he will add valuable hands-on experience from his many years in leadership positions at Stolt Nielsen, B+H Equimar and MSI in Singapore.