| Ship Name | Hull No. | IMO No. | ENI No. | Year Built | Date Taken | Location |
|---|---|---|---|---|---|---|
| FGS U-12 | S191 | 1969 | 1997-06-07 | Kieler Forde | ||
| FGS U-22 | S171 | 1974 | 1996-05-27 | Portsmouth Harbour | ||
| FGS U32 | S182 | 2005 | 2016-10-10 | Firth of Clyde | ||
| UACC Shamiya | 9458858 | 2011 | 2024-04-20 | Solent | ||
| UAL Africa | 9529243 | 2011 | 2014-05-04 | Aberdeen | ||
| UAL Coburg | 9210725 | 2002 | 2015-09-19 | Aberdeen | ||
| UAL Rodach | 9320518 | 2005 | 2014-06-08 | Aberdeen | ||
| UAL Texas | 9542350 | 2013 | 2013-09-12 | Aberdeen | ||
| UAL Texas | 9542350 | 2013 | 2023-08-08 | Aberdeen | ||
| UB Tiger | 1994 | 1997-04-20 | Rotterdam | |||
| fv Ubique | KY28 | 1974 | 2012-04-18 | Pittenweem | ||
| fv Ubique | KY28 | 1974 | 2014-10-10 | Arbroath | ||
| fv Ubique | KY28 | 1974 | 2019-05-31 | Arbroath | ||
| fv Ubique | KY28 | 1974 | 2023-08-07 | Arbroath | ||
| EML Ugandi | M315 | 1993 | 2024-06-21 | Firth of Clyde | ||
| Ugie Runner | 2008 | 2011-04-28 | Peterhead | |||
| Ugie Runner | 2008 | 2012-04-15 | Peterhead | |||
| Ugie Runner | 2008 | 2014-05-05 | Peterhead | |||
| Uisge Gorm | 8124034 | 1983 | 2010-06-20 | Rotterdam | ||
| Uisge Gorm | 8124034 | 1983 | 2011-06-24 | Rotterdam | ||
| UKD Bluefin | 9143427 | 1997 | 1997-08-14 | Southampton | ||
| UKD Bluefin | 9143427 | 1997 | 2003-09-27 | Southampton | ||
| UKD Bluefin | 9143427 | 1997 | 2011-06-23 | River Humber | ||
| UKD Bluefin | 9143427 | 1997 | 2011-06-29 | River Humber | ||
| UKD Bluefin | 9143427 | 1997 | 2013-06-10 | Solent | ||
| UKD Dolphin | 8325250 | 1984 | 2002-08-11 | Hull | ||
| UKD Marlin | 9064176 | 1993 | 2000-06-17 | Hull | ||
| UKD Marlin | 9064176 | 1993 | 2010-03-20 | Leith | ||
| UKD Marlin | 9064176 | 1993 | 2010-06-18 | River Humber | ||
| UKD Marlin | 9064176 | 1993 | 2012-06-21 | River Humber | ||
| UKD Marlin | 9064176 | 1993 | 2013-05-06 | Aberdeen | ||
| UKD Marlin | 9064176 | 1993 | 2014-06-08 | Aberdeen | ||
| UKD Marlin | 9064176 | 1993 | 2015-08-20 | River Tyne | ||
| UKD Marlin | 9064176 | 1993 | 2016-04-16 | Firth of Forth | ||
| UKD Seahorse | 9066655 | 2000 | 2001-09-22 | Southampton | ||
| UKD Seahorse | 9066655 | 2000 | 2002-04-20 | Southampton | ||
| UKD Seahorse | 9066655 | 2000 | 2006-04-22 | Southampton | ||
| UKD Seahorse | 9066655 | 2000 | 2010-08-08 | River Tyne | ||
| UKD Seahorse | 9066655 | 2000 | 2014-06-11 | Aberdeen | ||
| UKD Seahorse | 9066655 | 2000 | 2015-08-21 | River Tyne | ||
| UKD Sealion | 9267314 | 2003 | 2003-04-12 | Southampton | ||
| UKD Sealion | 9267314 | 2003 | 2003-04-12 | Southampton | ||
| UKD Sealion | 9267314 | 2003 | 2013-05-13 | Aberdeen | ||
| Ukraina | 7359486 | 1976 | 1995-08-09 | River Thames | ||
| Ullin of Staffa | 2000 | 2011-04-23 | Tobermory | |||
| Ulrike G | 9156113 | 2002 | 2023-06-29 | Belfast | ||
| Ultra Integrity | 9748083 | 2016 | 2019-08-03 | River Mersey | ||
| Ultra Tatio | 9782986 | 2016 | 2023-12-26 | River Tyne | ||
| Ulysses | 9214991 | 2001 | 2006-06-15 | Dublin | ||
| KNS Umoja | P3127 | 1987 | 1987-12-18 | Portsmouth Harbour | ||
| KNS Umoja | P3127 | 1987 | 1988-03-26 | Portsmouth Harbour | ||
| Undine | 9006112 | 1991 | 1998-05-16 | River Thames | ||
| Unico | 1927 | 2006-05-06 | River Thames | |||
| HMS Unicorn | 1824 | 2011-04-30 | Firth of Tay | |||
| Unicorn Ocean | 9370197 | 2008 | 2013-12-28 | River Tyne | ||
| Unicorn Ocean | 9370197 | 2008 | 2013-12-29 | River Tyne | ||
| Unimar | 1980 | 1997-04-19 | Antwerp | |||
| Union 5 | 9034975 | 1992 | 2003-05-07 | Zeebrugge | ||
| Union 6 | 9034987 | 1993 | 2003-05-07 | Zeebrugge | ||
| Union 7 | 9120164 | 1996 | 1997-04-19 | Antwerp | ||
| Union 7 | 9120164 | 1996 | 2002-06-20 | Antwerp | ||
| Union 7 | 9120164 | 1996 | 2012-06-23 | Rotterdam | ||
| Union 7 | 9120164 | 1996 | 2012-06-24 | Rotterdam | ||
| Union 8 | 1996 | 2012-06-23 | Rotterdam | |||
| Union 8 | 1996 | 2012-06-24 | Rotterdam | |||
| Union 11 | 1997 | 2012-06-22 | Rotterdam | |||
| Union 11 | 1997 | 2012-06-23 | Rotterdam | |||
| Union Cupid | 7514220 | 1977 | 1989-06-17 | River Thames | ||
| Union Diamond | 9220548 | 2001 | 2013-06-22 | River Mersey | ||
| Union Diamond | 2009 | 2013-06-22 | River Mersey | |||
| Union Fighter | 9537525 | 2010 | 2013-06-22 | River Mersey | ||
| Union Mars | 8012815 | 1981 | 1996-07-21 | Southampton | ||
| Union Mars | 8012815 | 1981 | 2001-09-01 | River Thames | ||
| Union Neptune | 8416803 | 1985 | 1989-06-17 | River Medway | ||
| Union Pearl | 1990 | 1998-04-23 | Southampton | |||
| Union Princess | 9242766 | 2002 | 2018-06-30 | River Tyne | ||
| Union Silver | 9374909 | 2011 | 2012-06-22 | Rotterdam | ||
| Union Silver | 9374909 | 2011 | 2012-06-23 | Rotterdam | ||
| Union Sun | 1985 | 2006-08-10 | River Thames | |||
| Union Titan | 8416750 | 1986 | 1989-04-30 | Southampton | ||
| Union Topaz | 1985 | 1996-04-14 | Rotterdam | |||
| Union-Elisabeth | 9148130 | 1997 | 2002-06-18 | Rotterdam | ||
| Unite | 02101144 | 1928 | 2002-06-16 | Amsterdam | ||
| United Carrier | 9132002 | 1998 | 2002-06-22 | Vlissingen | ||
| United Express | 9131993 | 1997 | 2000-01-17 | River Thames | ||
| United Spirit | 9185047 | 2000 | 2022-07-29 | River Tyne | ||
| Universal Mk.I | 9251767 | 2001 | 2001-07-22 | Southampton | ||
| Universal-1 | 1993 | 1997-06-09 | Hamburg | |||
| Uno | 7103186 | 1971 | 2002-06-21 | Vlissingen | ||
| UOS Voyager | 9439967 | 2010 | 2017-09-16 | River Tyne | ||
| UP Jasper | 9557666 | 2011 | 2014-06-14 | Montrose | ||
| UP Opal | 9655494 | 2014 | 2014-06-11 | Aberdeen | ||
| Uphusen | 9115937 | 1996 | 2011-09-25 | Firth of Clyde | ||
| UR 902 | 2013 | 2017-08-27 | River Tyne | |||
| UR 99 | 2011 | 2012-04-19 | Leith | |||
| Urania | 1978 | 1997-06-06 | River Elbe | |||
| Urfa | 7330014 | 1973 | 2001-03-18 | Harwich | ||
| Urgence | 1981 | 1997-07-13 | Southampton | |||
| Uriah Heep | 1999 | 2000-06-13 | River Thames | |||
| Ursula C | 1996 | 2000-08-05 | Manchester Ship Canal |