- Austral Asia Lines BV.
- BBC Chartering & Logistic GmbH & Co. KG
- BENGAL TIGER LINE PTE LTD
- Briese Schiffahrts GmbH & Co. KG
- Columbia Shipmanagement Ltd.
- Columbia Shipmanagement (Deutschland) GmbH
- Donnelly Tanker Management Ltd.
- Feederlines B.V.
- German Tanker Shipping GmbH & Co.
- HARTMANN OFFSHORE GMBH
- Hartmann Schiffahrts GmbH & Co. KG
- International Bunker Industry Association
- Intership Navigation Co. Ltd
- Maritime Transport + Logistik GmbH & Co. KG
- NEW PACIFIC LINE PTE LTD
- UBC - United Bulk Carriers Ltd.
- UPT - United Product Tankers GmbH & Co. KG