Vi har så langt registrert 19 566 rederier
| Navn | Grunnlagt | | Union Sulphure Co. Inc. | |
| United Africa Co. Ltd. | |
| United European Car Carriers A/S,Grimstad | |
| United European Car Carriers Norway A/S, Grimstad | |
| United Fisheries Co. W.L.L., Kuwait | |
| United Fisheries of Kuwait K.S.C., Kuwait | |
| United Fruit Co, New York, NY, USA | |
| United Mail S.S. Co., New York, USA | |
| United States Army, USA | |
| United States Coast Guard | |
| United States Lines,USA | |
| United States Maritime Commission,USA | |
| United States Navy,USA | |
| United States Petroleum Carriers Inc. v/ Aristotle S. Onassis. | |
| United States Shipping Board,U.S.A. | |
| United States War Shipping Adm. USA | |
| United Steam Navigation Co., Newcastle | |
| United Whalers Ltd. London | |
| Unitherm A/S, Oslo | |
| Unitrans A/S, Måløy / Bergen | |
| Unitrans Marine, Bergen | |
| Unity A/S, Egersund | |
| Univan Management Service AS, Arendal / Bergen | |
| Univan Norge A/S, Bergen | |
| Univan Ship Management Ltd, Monrovia | |
