| S | Seagull 1 (GB) | Sr.N I (GB) |
| S-56 (Russia) | Sedov (Russia) | Sri Tregganu (Malaysia) |
| S 622 (France) | Seefalke (Germany) | ST-8 (France) |
| S. N. D. No. 4 (GB) | Seehund Type Midget Submarine (Germany) USA) | (ST-448) (France) |
| (S. O. Co. No. 14) (USA) | Segwun (Canada) | (ST-695) (USA) |
| S. Paio (GB) | Seima (Germany) | ST-2031 (USA) |
| SA 42 (Spain) | Seiont II (GB) | St. Andre (Canada) |
| (Saari II) (Finland) | Sekar Aman (Australia) | St. Antonius (Belgium) |
| (Saaristo) (Finland) | (Sepha Volaars) (Portugal) | (St. Canute) (Sweden) |
| Saatsee (Germany) | Sequoia (USA) | St. Cybi (GB) |
| Sabar (Malaysia) | (Sequoia II) (USA) | St. Denys (France) |
| Sabino (USA) | Sergeant Floyd (USA) | St. Georg (Germany) |
| Sabrina 5 (GB) | Settler (New Zealand) | St. Josef (Austria) |
| (Sachsen) (Germany) (Germany) (Germany) | Seute Deern (Germany) | (St. Knud) (Sweden) |
| Sachsenwald (Germany) | Severn Progress (GB) | St. Mary (Falkland Islands) (USA) |
| Sackville (Canada) | (Sexan) (Sweden) | St. Roch (Canada) |
| Sagres (Portugal) | Shad (GB) | (Stadsgarden I ) (Sweden) |
| (Sagres) (Germany) | Shamrock (GB) | Stadt Innsbruck (Austria) |
| (Sahlenburg) (Netherlands) | Shamrock V (USA) | Stadt Luzern (Switzerland) |
| Sailfish (USA) | Shandon (Australia) | Stadt Passau (Austria) |
| Saimaa (Finland) | Shelter Bay (Canada) | Stadt Rapperswil (Switzerland) |
| (Saint Bedan) (Greece) | Sherman Zwicker (USA) | Stadt Wehlen (Germany) |
| Saint-Gilles (France) | (Shetlander) (GB) | Stadt Wien (Austria) |
| Saint-Marc (France) | Shibaura Maru (Japan) | Stadt Zurich (Switzerland) |
| Saint Patrick (Eire) | Shieldhall (GB) | Stanley Norman (USA) |
| Saira (GB) | (Shiga) (Japan) | (Star of Alaska) (USA) |
| (Saitta) (Finland) | Shin Hsun Yuan (Australia) | Star of India (USA) |
| Saiyya Type Dhow (Yemen) | (Shipka) (Bulgaria) | Star of Kodiak (USA) |
| Salama (Finland) | Sicamous (Canada) | Statsraad Lehmkuhl (Norway) |
| Saldanha Marinho (Brazil) | Sigyn (Finland) | (Stauper) (Norway) |
| (Salmi) (Finland) | (Sierra Pedrosa) (South Georgia) | Stavenes (Norway) |
| (Salo II) (Finland) | Sigsbee (USA)* | Ste. Claire (USA) |
| Salto (Uruguay) | Silversides (USA) | Ste. Genevieve (USA) |
| Saltsjon (Sweden) | (Silver Spray) (Netherlands) | Stella Polaris (Japan) |
| Sam. Male (Australia) | Simplon (Switzerland) | Stephen Taber (USA) |
| Sam McBride (Canada) | Simson (Netherlands) | Stettin (Germany) |
| Samarytanka (Poland) | (Simson) (Germany) | Stewart (USA) |
| Samenwerking (Netherlands) | (Sinikolmio) (Finland) | Stickleback (GB) |
| Sampo (Germany) | (Sir Alan Herbert) (GB) | Stier (Germany) |
| (Sampo) (Finland) | Sir Walter Scott (GB) | Stockvik (Sweden) |
| Samson V (Canada) | (Sirius) (Russia) | (Stonehorse) (USA) |
| (Samuel Green) (GB) | Sispud II (USA) | (Stor-Klas) (Finland) |
| (San.Antonio) (Germany) | Sjaelland (Denmark) | (Stord) (Norway) |
| (San Francisco) (USA) | Sjelskor (Denmark) | Stord I (Norway) |
| (San Giorgio) (Italy) | (Skagans Rev) (Denmark) | Storm Princess (Sweden) |
| San Mateo (Canada) | (Skagen) (Denmark) | Storskar (Sweden) |
| Sanctuary (USA) | Skibladner (Norway) | Stralsund (Germany) |
| Sandette (France) | (Skjaegar) (Norway) | Strand (Sweden) |
| Sandette 2 (France) | Skudelev Ships (Denmark) | (Strangnass Express) (Sweden) |
| (Sandra) (GB) | (Sleepdienst 2) (Netherlands) | Streatley (GB) |
| (Sandheads No. 16) (Canada) | (Sleipner) (Netherlands) | Strelika (Yugoslavia) |
| Sandnaes (Norway) | (Sleuth) (Australia) | Styrbjorn (Norway) |
| Sankt Erik (Sweden) | Smaland (Sweden) | Subanahongsa (Thailand) |
| (Sankt Georg) (Germany) | (Smart) (Norway) | Succes (Netherlands) |
| Santiago (Australia) (USA) | (Smith Knoll) (Netherlands) | (Succes I) (Netherlands) |
| Sapphire (GB) | Snow Squall (USA) | Success (Australia) |
| (Sarah) (GB) | Sobjornen (Denmark) | Sudan (Egypt) |
| (Sarmizgezuta) (Romania) | (Socony 14) (Netherlands) | (Sudfall) (Netherlands) |
| Sarpen (Sweden) | Solace (GB) | (Sudhamburg) (Germany) |
| Saturn (Germany) | Soldek (Poland) | (Suey Sin Fah) (Australia) |
| Savannah (USA) | Solve (Sweden) | Suldal (Norway) |
| Savarona (Turkey) | Somerset (South Africa) | Sultan's Barge (Zanzibar) |
| (Savo) (Finland) | Soobrazitelnyi (Russia) | Sumpter Valley Dredge (USA) |
| (Savoia) (Italy) | (Sophia) (GB) | (Sunbeam II) (Greece) |
| Savoie (Switzerland) | Sorlandet (Norway) | (Sundia) (Denmark) |
| Savonlinna (Finland) | (Sorrento) (Australia) | Sundowner (GB) |
| (Saxaren) (Sweden) | Sotero (GB) | Sunnan II (Finland) |
| Sayremar I (Spain) | (South Park) (USA) | Suomen Joutsen (Finland) |
| (Saxifrage) (GB) | South Steyne (Australia) | Suomi (Finland) |
| (SC. -718) (Norway) | Southern Actor (Norway) | Susan Ashley (GB) |
| Scarweather (France) | (Southgate) (USA) | (Susan Dayton) (USA) |
| Schaarhorn (Germany) | Souvenir D'Antan (GB) | Susan May (USA) |
| Schebo (Sweden) | Soya (Japan) | Suur Saimaa (Finland) |
| Scheelenkuhlen (Netherlands) | Spaekhuggeren (Denmark) | Suur Toll (Estonia) |
| (Schill) (Netherlands) | (Spangaren) (Sweden) | Suvi-Saimaa (Finland) |
| Schiller (Switzerland) | (Sparrow) (New Zealand) | Svanen (Finland) |
| Schmilka (Germany) | Sparrowhawk (USA) | (Svanen) (Australia) |
| Schonbrunn (Austria) | Spartan (GB) | (Svano) (Sweden) |
| Schorpioen (Netherlands) | (Speculant) (Netherlands) | (Sven) (Finland) |
| (Schulau) (Germany) | Speedwell (GB) | Svenor (Australia) |
| (Schulschiff Deutschland) (Germany) | Spica (Sweden) | Sviatitel Nicolai (Russia) |
| Schulte (Germany) | (Spiggen) (GB) | (Svinor) (GB) |
| Schwartzburg (Denmark)* | Spinaway C (GB) | Swallow (GB) |
| Scone (GB) | Split (Yugoslavia) | Swan (GB) |
| Scorpio (GB) | Spokenkieker (Germany) | Swiet of Ipswich (USA) |
| Scorpion (USA) | Springeren (Denmark) | (Swinemunde) (Germany) |
| (Scotland) (USA) | Sprogo (Denmark) | SX 404 Type Submarine (Pakistan) |
| Sea Alarm (GB) * | Spry (GB) | (Sylvan) (Netherlands) |
| Sea Cloud (Germany) | Spurn (GB) | Sylvina W. Beal (GB) |
| Sea Fox (USA) | (Spurn) (GB) | (Syveren) (Denmark) |
| Sea Gull (USA)* | (Squalus) (USA) | (Szent Laszlo) (Hungary) |
