| Ship Name | Hull No. | IMO No. | ENI No. | Year Built | Date Taken | Location |
|---|---|---|---|---|---|---|
| Sigas Earl | 8026385 | 1983 | 2008-05-17 | River Thames | ||
| Sigas Silvia | 9355135 | 2007 | 2010-06-18 | River Humber | ||
| Sigfart | 1914 | 1998-10-26 | Haugesund | |||
| Sikinos | 9460851 | 2011 | 2017-07-01 | River Tyne | ||
| Silex | 15 | 9085194 | 1994 | 2001-09-22 | Southampton | |
| Silke | 1986 | 1992-09-27 | Rotterdam | |||
| Silvaplana | 2003 | 2010-06-20 | Rotterdam | |||
| Silver | 1992 | 1996-04-14 | Rotterdam | |||
| Silver Barracuda | 1977 | 2002-09-03 | River Thames | |||
| Silver Barracuda | 1977 | 2006-05-01 | River Thames | |||
| Silver Barracuda | 1977 | 2009-06-14 | River Thames | |||
| Silver Barracuda | 1977 | 2023-07-06 | River Thames | |||
| Silver Beam | 1951 | 2006-05-06 | River Thames | |||
| Silver Bonito | 1983 | 2002-04-22 | River Thames | |||
| Silver Bonito | 1983 | 2002-09-03 | River Thames | |||
| Silver Bonito | 1983 | 2003-05-03 | River Thames | |||
| Silver Bonito | 1983 | 2005-07-16 | River Thames | |||
| Silver Bonito | 1983 | 2006-05-01 | River Thames | |||
| Silver Bonito | 1983 | 2009-06-11 | River Thames | |||
| Silver Bonito | 1983 | 2023-07-06 | River Thames | |||
| fv Silver Chord | SY101 | 1973 | 2015-05-24 | Arbroath | ||
| fv Silver Coquet | SN8 | 1960 | 2012-08-24 | River Tyne | ||
| fv Silver Coquet | SN8 | 1960 | 2014-08-22 | River Tyne | ||
| fv Silver Coquet | SN8 | 1960 | 2015-08-20 | River Tyne | ||
| fv Silver Dawn | OB333 | 1970 | 2012-04-07 | Mallaig | ||
| Silver Dawn | 9857937 | 2021 | 2025-09-09 | Firth of Clyde | ||
| Silver Dolphin | 1971 | 1999-09-15 | River Thames | |||
| Silver Dolphin | 1971 | 2002-04-22 | River Thames | |||
| Silver Dolphin | 1971 | 2002-09-03 | River Thames | |||
| Silver Dolphin | 1971 | 2005-07-17 | River Thames | |||
| Silver Dolphin | 1971 | 2009-10-24 | River Thames | |||
| Silver Explorer | 8806747 | 1989 | 2016-05-15 | Sound of Mull | ||
| fv Silver Fern | OB84 | 1971 | 2010-05-03 | Tarbert, Loch Fyne | ||
| fv Silver Fern | OB84 | 1971 | 2012-06-03 | Tarbert, Loch Fyne | ||
| fv Silver Fern | FR416 | 1982 | 2012-04-15 | Fraserburgh | ||
| Silver Framnes | 7823982 | 1979 | 2022-05-17 | Lerwick | ||
| Silver Jackal | 2009-10-20 | River Thames | ||||
| Silver Lake | 9359648 | 2007 | 2012-04-15 | Fraserburgh | ||
| Silver Pegasus | 9343455 | 2007 | 2010-06-20 | Rotterdam | ||
| fv Silver Quest | BH225 | 1990 | 2014-05-25 | Amble | ||
| Silver Ray | 7807811 | 1978 | 1998-05-27 | Hamburg | ||
| Silver River | 6825218 | 1968 | 2001-08-11 | Ramsey | ||
| Silver Sockeye | 1982 | 2023-07-06 | River Thames | |||
| Silver Sturgeon | 1997 | 2002-09-03 | River Thames | |||
| Silver Sturgeon | 1997 | 2005-07-16 | River Thames | |||
| Silver Sturgeon | 1997 | 2009-06-11 | River Thames | |||
| Silver Sturgeon | 1997 | 2023-07-06 | River Thames | |||
| fv Silver Wave | BF372 | 1974 | 2012-08-26 | River Tyne | ||
| fv Silver Wave | BF372 | 1974 | 2014-05-05 | Fraserburgh | ||
| fv Silver Wave | BF372 | 1974 | 2016-12-27 | River Tyne | ||
| fv Silver Wave | BRD84 | 1986 | 2024-05-17 | Stromness | ||
| Silver Whisper | 9192179 | 2001 | 2022-07-29 | River Tyne | ||
| Silver Wind | 8903935 | 1995 | 1995-06-23 | River Thames | ||
| Silverholme | 1969 | 2004-06-12 | Bowness | |||
| RNLB Silvia Burrell | 12-37 | 1993 | 2010-05-08 | Girvan | ||
| Simbad | 7925261 | 1981 | 1997-09-29 | Southampton | ||
| Simeon Ch | 7512612 | 1977 | 1997-11-06 | Southampton | ||
| Simon de Danser | 1997-07-13 | Southampton | ||||
| Simone | 1982 | 2000-06-18 | River Trent | |||
| Simone J | 9143817 | 1997 | 2002-06-17 | Rotterdam | ||
| Simoon | 7705788 | 1977 | 1999-05-23 | Southampton | ||
| USS Simpson | FFG56 | 1985 | 1994-09-20 | Norfolk, Virginia | ||
| Simson | 42 | 9054365 | 1993 | 2002-06-16 | Ijmuiden | |
| Simwer | 1986 | 2000-06-18 | River Trent | |||
| fv Sincere V | SH3 | 1989 | 2012-09-17 | Pittenweem | ||
| Singapore Bay | 1993 | 1995-06-13 | Southampton | |||
| Sinjoor 1 | 8003424 | 1982 | 1997-04-19 | Antwerp | ||
| Sint-Jozef | 1944 | 2002-06-20 | Antwerp | |||
| Sioux | 1981 | 1992-09-27 | Rotterdam | |||
| Sioux | 1981 | 1997-06-06 | Bremerhaven | |||
| Sir Aubrey | 1960 | 2003-05-03 | River Thames | |||
| RFA Sir Bedivere | L3004 | 6617154 | 1967 | 1989-07-02 | Portsmouth Harbour | |
| RFA Sir Bedivere | L3004 | 6617154 | 1967 | 1989-07-27 | Portland Harbour | |
| Sir Bevois | 8414166 | 1985 | 1988-09-03 | Southampton | ||
| Sir Bevois | 8414166 | 1985 | 1991-01-05 | Southampton | ||
| Sir Bevois | 8414166 | 1985 | 2002-06-24 | Southampton | ||
| Sir Bevois | 8414166 | 1985 | 2003-08-17 | Southampton | ||
| Sir Bevois | 8414166 | 1985 | 2003-09-27 | Southampton | ||
| Sir Bobby Robson | 2012 | 2014-08-23 | River Tyne | |||
| Sir Bobby Robson | 2012 | 2014-08-23 | River Tyne | |||
| Sir Charles Parsons | 8402840 | 1985 | 1989-06-17 | River Thames | ||
| RFA Sir Galahad | L3005 | 8414635 | 1987 | 1987-12-22 | Southampton | |
| RFA Sir Galahad | L3005 | 8414635 | 1987 | 1988-03-12 | Portsmouth Harbour | |
| RFA Sir Galahad | L3005 | 8414635 | 1987 | 1989-03-25 | Portsmouth Harbour | |
| RFA Sir Galahad | L3005 | 8414635 | 1987 | 2001-07-22 | Southampton | |
| Sir Geoffrey Rackham | 1985 | 2006-08-08 | Portsmouth Harbour | |||
| Sir Geoffrey Rackham | 1985 | 2023-07-07 | Portsmouth Harbour | |||
| Sir Geoffrey Rackham | 1985 | 2024-04-19 | Portsmouth Harbour | |||
| RFA Sir Geraint | L3027 | 6707894 | 1967 | 1989-05-27 | Southampton | |
| Sir Humphrey Gale | FML8129 | 1983 | 2007-09-08 | Portsmouth Harbour | ||
| Sir Humphrey Gale | FML8129 | 1983 | 2010-08-14 | Portsmouth Harbour | ||
| Sir Humphrey Gale | FML8129 | 1983 | 2011-08-05 | Portsmouth Harbour | ||
| Sir Humphrey Gale | FML8129 | 1983 | 2023-07-08 | Portsmouth Harbour | ||
| Sir James Scott | 2001 | 2003-05-05 | Portsmouth Harbour | |||
| Sir James Scott | 2001 | 2006-04-22 | Southampton | |||
| Sir John Craster | 1973 | 2014-05-31 | River Mersey | |||
| RNLB Sir John Fisher | 47-028 | 1989 | 2014-03-22 | Workington | ||
| rv Sir John Murray | 2004 | 2015-06-04 | Firth of Clyde | |||
| RFA Sir Lancelot | L3029 | 5413642 | 1964 | 1987-08-29 | Portsmouth Harbour | |
| RFA Sir Lancelot | L3029 | 5413642 | 1964 | 1989-03-12 | Southampton |