| S | |||
| SAAS FEE (Suisat) | SARDIS(ABC) | SEDOY (ABC) | SIX MADUN (Preisig / Suismer) |
| SAAS GRUND (Suisat) | SARINE (Massoel) | SEMPACH (Keller) | SMYRNA (ABC) |
| SABINA (Später / later: ANJA) | SARINE 2 (Massoel) | SETTEBELLO (Suismer) | SOFATI CONTINENT |
| SABINA (Enzian) | SARINE (2008) (Massoel) | SEXTUM (MSC) | SOLANGE P (Seapako) |
| SAENTIS (KTA/Nautilus/Keller) | SATIGNY (Massoel) | SHANE (Profesional Partners Lugano) | SOLVA (Metrofin) |
| SAFMARINE AKWABA (Enzian) | SCHLOSS TARASP (Balaena) | SHAULA (MSC) | SONIA I (Profesional Partners Lugano) |
| SAFMARINE ANGELA (Enzian) | SHOTA (ABC) | ||
| SAFMARINE SAHARA (Enzian) | SCHWYZ (Massoel) | SIDER DREAM (Nova) | SOYA QUEEN (Suisat) |
| SAFMARINE SAHEL (Enzian) | SCL AKWABA (Enzian) | SILS (1956) (Suisat) | SPLENDID ARROW (Acomarit) |
| SAFMARINE SHABA (Enzian) | SCL ANDISA (Enzian) | SILS (1979) (Suisat) | SPLENDID BREEZE (Acomarit) (1973) |
| SAFMARINE SUDD (Enzian) | SCL ANGELA (Enzian) | SILS (2003) (Suisat) | SPLENDID BREEZE (Acomarit) (1974) |
| SAFMARINE SUGUTA (Enzian) | SCL ANITA (Enzian) | SILVAPLANA (Tschudi & Eitzen Oslo) | SPLENDID COUNTRY (Acomarit) |
| SAFMARINE SUMBA (Enzian) | SCL BASILEA (Enzian) | SILVAPLANA (1956) (Suisat) | SPLENDID DIAMOND (Acomarit) |
| SAINT MICHEL (ABC) | SCL BASILISK (Enzian) | SILVAPLANA (1972) (Suisat) | SPLENDID HONOUR (Acomarit) |
| SALOMON (Jugendschiff) | SCL BERN (Enzian) | SILVAPLANA (1990) (Suisat) | SPLENDID SEA (Mutual Steamship Operators Lugano ) (Shipping & Financial SA Lausanne) |
| SALTINA (Massoel) | SCL ELISE (Enzian) | SILVAPLANA (2007) (Suisat) | SPLENDID SKY (Shipping & Financial S.A., Lausanne) |
| SAN BACCO (ABC) | SCL HELVETIA (Enzian) | SILVERSTAR (Surveillance SGS) | SPLENDID SUN (Shipping & Financial S.A., Lausanne) |
| SAN BEATO (ABC) | SCL LÉMAN (Enzian) | SILVRETTA (1956) (Suisat) | ST. CERGUE (Suisat Panama) |
| SAN BENEDETTO (ABC) | SCL MAGRIT (Enzian) | SILVRETTA (1973) (Suisat) | ST. CERGUE (1941) (Suisat) |
| SAN BENEDETTO II (ABC) | SCL MARIE-JEANNE (Enzian) | SILVRETTA (1995) (Suisat) | ST. CERGUE (1952) (Suisat) |
| SAN BENJAMINO (ABC) | SCL NICOLE (Enzian) | SILVRETTA (2007) (Suisat) | ST. CERGUE (1966) (Suisat) |
| SAN BERNARDINO (ABC) | SCL THUN (Enzian) | ST. CERGUE (1984 Capt. Waldmeyer) | |
| SAN BERTOLDO (ABC) | SCL TRUDY (Enzian) | SILVER MOON (ABC) | ST CERGUE (1985) (Suisat) |
| SAN BIAGIO (ABC) | SCT BREITHORN | ST. CERGUE (1991) (Suisat) | |
| SAN MORITZ (Galea Chur) | SCT MATTERHORN | SIMONA I (MSC) | ST-CERGUE (2006) (Suisat) |
| SAN NICOLA (ABC) | SCT MONTE ROSA | SIMANO (Massoel) | ST-CERGUE (2017) (Suisat) |
| SAN PADRE PIO (ABC) | SCT STOCKHORN | SIMONE K (ABC) | ST. GOTTHARD (KTA / Nautilus) |
| SAN PIETRO (ABC) | SEA RHINE (Suismer / ABC) | SIMPLON (Lloyd Seeschiffahrt) | STEFANIA (MSC) |
| SAN SALVATORE (Tuillier) | SELEINA (Massoel) | SIMPLON (Lloyd Seeschiffahrt AG Hamburg) | STOCKHORN (Contal) |
| SEAMARK (ABC) | SIMPLON (Acomarit) | SUNADELE (Migros-Reederei "Zürich") | |
| SUNAMELIA (Migros-Reederei "Zürich") | |||
| SWIFT (Trafina / Strübin) | |||
| SWITZERLAND (B. Pusich Suhr) | |||
| SWITZERLAND (Passenger) | |||
| SYMPHONY (MSC) | |||