Vi har så langt registrert 19 632 rederier
| Navn | Grunnlagt | | Ureguayan Govenment v/ Adenistracion Nacional de Puertos | |
| Ursin Smith & A. Salvesen, Oslo | |
| US Army Transport Service | |
| U.S. Line Inc, New York, USA | |
| US. Shipping Board, Washington, USA | |
| Uterestauranten Trondheim A/S, Molde | |
| Utfjell Shipping, Narvik | |
| Utflesa A/S, Leines, Bodø | |
| Utflesa Kystfiske A/S, Leines, Bodø | |
| Utgerdardarflagid, Kea.h.f. Island | |
| Utkilen A/S, Bergen | |
| Utkilen Shipping A/S, Bergen | |
| Utsira Kommune, Utsira | |
| Uttian Fisk A/S, Dyrvik | |
| Uttian Småbåtforening, Dyrvik | |
| Uttrønderlagen Dampbaatlag, Trondhjem | |
| Utvik Senior A/S, Senjahopen | |
| Vaaage, Ole, Hamnvik | |
| Vaadjuv Nyquist, Oslo | |
| Vaage, Kjell, Os | |
| Vaage - Norvik Bilferge A/S, Molde | |
| Vaage Ship Management A/S, Bergen | |
| Vaarbris A/S, Holmedal, Bergen | |
| Vaboens Rederi A/S,Kristiansand | |
| Vaddjuv Nyquist, Oslo | |
