- Saaremaa (2010)
- Sabrina (1990)
- Safe Christina (1969)
- Saga (1981)
- Saga Star (1981)
- Saga Wind (1972)
- Sagafjord (1965)
- Sailor (1987)
- Saint Eloi (1975)
- Saint-Malo (2025)
- Saint Patrick II (1973)
- Salamanca (2021)
- Sally Express (1974)
- Sally Sky (1976)
- Sally Star (1981)
- Sally Sun (1979)
- Sam-Sine (1979)
- Samsø (2012)
- Samsø (2015)
- San Giorgio (2001)
- San Gwann (2001)
- Sandefjord (1965)
- Sanna (1978)
- Santa Cruz de Tenerife (1994)
- Santa Irini (1997)
- Santoña (2022)
- Sardegna Bella (1967)
- Sardinia Express (1995)
- Sardinia Jet (1997)
- Sardinia Regina (1972)
- Sardinia Vera (1975)
- Sassnitz (1989)
- SC Atlantic (1986)
- Scandinavia (1965)
- Scandinavia (1980)
- Scandinavia (1980)
- Scandinavian Sky (1972)
- Scandinavian Star (1971
- Scandinavian Star (1975)
- Scandinavian Sun (1968)
- Scandinavica (1973)
- Scandinavica (1974)
- Scania (1972)
- Scatto (1994)
- Scent of Sea (1964)
- Schleswig-Holstein (1997)
- Schleswig-Holstein (2011)
- Scintu (2009)
- Scotia Prince (1972)
- Scottish Viking (2009)
- Sea Leopard (1997)
- Sea Wind (1972)
- Seawind II (1979)
- Seafrance Berlioz (2005)
- SeaFrance Cézanne (1980)
- Seafrance Moliére (2002)
- Seafrance Nord Pas-De-Calais (1987)
- Seafrance Rodin (2001)
- Seafreigth Freeway (1982)
- Seafreigth Highway (1981)
- Seminole Empress (1973)
- Serdica (1982)
- Seven Sisters (2006)
- Sevilla 001 (2018)
- Shannon Alexis (1997)
- Sharden (2005)
- Sheng Hang 8 (1964)
- Sheng Sheng (1972)
- Shiretoko Maru (1972)
- Shorok 1 (1960)
- Shorouk (1960)
- Sibilla (1979)
- Sicilia Jet (1997)
- Sigrid (1992)
- Silesia (1979)
- Silja Europa (1993)
- Silja Festival (1986)
- Silja Karneval (1985)
- Silja Scandinavia (1992)
- Silja Serenade (1990)
- Silja Star (1975)
- Silja Star (1980)
- Silja Symphony (1991)
- Silvia Ana L (1996)
- Silvia Regina (1981)
- Singapore II (1957)
- Sirena Seaways (2002)
- Sicilia (2002)
- Skandia (1973)
- Skandynawia (1964)
- Skane Jet (1998)
- Skania (1995)
- Skansehage (1959)
- Skarven (2009)
- Skiftet (1985)
- Skjoldnæs (1979)
- Skutvik (1972)
- Sky Wind (1986)
- Skåne (1998)
- Skånevik (1967)
- Slite (1955)
- Smyrna (1977)
- SNAV Adriatico (1986)
- SNAV Lazio (1990)
- SNAV Sardegna (1989)
- SNAV Toscana (1981)
- Soby (1966)
- Soca (1980)
- Sochi Express (1970)
- Soela (2017)
- Sognefjord (1943)
- Sol Christina (1966)
- Sol Olympia (1967)
- Solskjel (1963)
- Sorolla (2001)
- Sorrento (2003)
- SpeedOne (1997)
- Speedrunner II (1996)
- Speedrunner III (1999)
- Speedrunner IV (1999)
- Splendid (1994)
- Superrunner Jet (1999)
- Speedrunner jet 2 (1997)
- Spir (1986)
- Spirit of Britain (2011)
- Spirit of France (2011)
- Spirit of Tasmania (1986)
- Spirit of Tasmania III (1995)
- Spirit of Tasmania IV (2024)
- Spirit of Tasmania V (2025)
- Split 1700 (1966)
- Sporades Star (1975)
- Spoven (1959)
- St Anselm (1980)
- St. Brendan (1974)
- St. Catherine (1983)
- St. Cecilia (1987)
- St Clare (2001)
- St. Damian (1972)
- St. David (1981)
- St. Faith (1990)
- St. George (1968)
- St. Helen (1983)
- St. Matthew (1996)
- St. Ola (1971)
- St. Thomas of Aquinas (1973)
- Star (2007)
- Star Aquarius (1989)
- Star Fighter (1978)
- Star N (1965)
- Star Wind (1977)
- Starward (1968)
- Stavangerfjord (2007)
- Stavangerfjord (2013)
- Stella (2012)
- Stelvio (1955)
- Stena Adventurer (2003)
- Stena Alegra (1998)
- Stena Atlantica (1975)
- Stena Baltica (1971)
- Stena Baltica (1973)
- Stena Baltica (1973) Sveti Stefan II
- Stena Baltica (1986)
- Stena Baltica (2005)
- Stena Baltica (2007)
- Stena Britannica (1967)
- Stena Britannica (1981)
- Stena Britannica (2000)
- Stena Britannica (2003)
- Stena Britannica II (2003)
- Stena Caledonia (1981)
- Stena Cambria (1980)
- Stena Carisma (1997)
- Stena Danica (1983)
- Stena Driver (1982)
- Stena Ebba (2022)
- Stena Edda (2020)
- Stena E-Flexer 1 (2019)
- Stena E-Flexer 2 (2019)
- Stena E-Flexer 3 (2020)
- Stena E-Flexer 4 (2021)
- Stena Egeria (2001)
- Stena Embla (2021)
- Stena Empereur (1983)
- Stena Estelle (2022)
- Stena Estrid (2019)
- Stena Europe (1981)
- Stena Explorer (1996)
- Stena Fantasia (1980)
- Stena Felicity (1980)
- Stena Feronia (1997)
- Stena Flavia (2008)
- Stena Forwarder (2001)
- Stena Germanica (1987)
- Stena Germanica (2001)
- Stena Germanica III (2001)
- Stena Gothica (1982)
- Stena Hengist (1972)
- Stena Hollandica (2001)
- Stena Horizon (2006)
- Stena Invicta (1985)
- Stena Jutlandica (1983)
- Stena Jutlandica (1996)
- Stena Jutlandica III (1996)
- Stena Lagan (2005)
- Stena Leader (1975)
- Stena Livia (2008)
- Stena Mersey (2005)
- Stena Nautica (1974)
- Stena Nautica (1986)
- Stena Nordica (1969)
- Stena Nordica (1979)
- Stena Nordica (2000)
- Stena Normandica (1974)
- Stena Oceanica (1967)
- Stena Olympica (1972)
- Stena Pegasus (1996)
- Stena Pioneer (1975)
- Stena Prince (1969)
- Stena Rider (1982)
- Stena Royal (1992)
- Stena Saga (1967)
- Stena Saga (1981) Stena Europe
- Stena Saga (1981)
- Stena Scandica (2005)
- Stena Scandinavica (1974)
- Stena Scandinavica (1988)
- Stena Scandinavica (2003)
- Stena Scandinavica IV (2003)
- Stena Seafarer (1975)
- Stena Seapacer 1 (1999)
- Stena Seapacer 2 (1999)
- Stena Seapacer 3 (2000)
- Stena Seapacer 4 (2001)
- Stena Spirit (1988)
- Stena Superfast VII (2001)
- Stena Superfast VIII (2001)
- Stena Superfast X (2002)
- Stena Traveller (1992)
- Stena Vinga (2005)
- Stena Vision (1987)
- Stena Voyager (1996)
- Sterna (1992)
- Stetind (1977)
- Stjerneborg (1990)
- Stordal (1978)
- Strait Feronia (1997)
- Straitsman (2005)
- Strilborg (1957)
- Subsea Seven (1971)
- Sulafjord (1986)
- Sun Express (1967)
- Sun Fiesta (1967)
- Sun Flower (1957)
- Sundancer (1975)
- Sunnhordland (1943)
- Sunny (1982)
- Suokki (1952)
- Suomenlinna (1952)
- Suomenlinna II (2004)
- Super Seacat France (1996)
- Super-Fast Galicia (2003)
- Superfast I (1995)
- Superfast II (1995)
- Superfast II (2009)
- Superfast V (2001)
- Superfast VII (2001)
- Superfast VIII (2001)
- Superfast IX (2002)
- Superfast X (2002)
- Superfast XI (2002)
- Superfast XII (2002)
- Superferry 2 (1973)
- Superflex Alfa (1987)
- Superflex Bravo (1987)
- Superflex Charlie (1988)
- Superflex Hotel (1989)
- Superflex November (1989)
- Superrunner (1999)
- Superrunner Jet (1999)
- SuperRunner Jet 2 (1999)
- Superseacat Four (1999)
- Superseacat One (1997)
- Superseacat Three (1999)
- Superseacat Two (1997)
- SuperSpeed 1 (2008)
- Superspeed 2 (2008)
- Superstar (2008)
- Superstar II (1985)
- Svea (1985)
- Svea Corona (1975)
- Svea Corona (1975) (Wellamo)
- Svea Drott (1966)
- Svea Jarl (1962)
- Svea Regina (1972)
- Svea Scarlett (1971)
- Svea Scarlett (1987)
- Svea Star (1968)
- Svealand (1972)
- Svealand (1999)
- Sveio (1967)
- Sveti Stefan II (1973)
- Sääminki III (1976)
- Søby-Færgen (1966)
- Sølyst (1972)
- Sønderjylland (1955)