- 🇩🇰SANDBORN 42 m · Dredger 219030406 9965667 VORDINGBORG-GRONSUND
- 🇳🇱SANDER 24 m · Dredger 244630937 — POTSHAUSEN
- 🇱🇺SANDERUS 110 m · Dredger 253661000 9830941 BEZEE
- 🇦🇺SANDGATE RESCUE 2 6 m · Search and rescue vessel 503020290 — CLASS B
- 🇩🇰SANDHOLM 63 m · Dredger 219002493 6815976 GROENSUND
- 🇹🇭SANDON 7 40 m · Dredger 567035800 9818137 SAMUTPRAKARN
- 🇹🇭SANDON 9 91 m · Dredger 567004000 9173123 PROVINCIAL HALL
- 🇬🇧SANDOWN LIFEBOAT 7 m · Search and rescue vessel 235067206 — CLASS B
- 🇬🇧SANDOYNE LASS 15 m 232006947 — CLASS B
- 🇵🇦SANDPIPER 18 m · Dredger 352001813 — —
- 🇸🇪SANDRA 10 m · Diving support vessel 265029240 — CLASS B
- 🇺🇸SANDRA LEE 211 m 367663440 — XX XXX → US^0EQY
- 🇺🇸SANDRA LEIGH IVEY 302 m 368078670 — MAGNOLIA 122 FLEET
- 🇦🇺SANDS RESCUE 11 m · Search and rescue vessel 503130210 — CLASS B
- 🇬🇧SANDSEND 44 m · Port tender 235013567 — CLASS B
- 🇺🇸SANDWICH FIRE — 338156851 — —
- 🇬🇮SANDY BAY Pilot vessel 236112688 — CLASS B
- 🇺🇸SANDY POINT 112 m 366952360 8991085 US^0D2Y → 0ECW
- 🇨🇳SANHANGZHUANG15 63 m · Dredger 412043530 — ANNABA
- 🇩🇰SANNE A 36 m 219007414 8749602 NYBORG
- 🇳🇱SANNE MARIJE 55 m · Dredger 244780833 — EINDSTATION.,
- 🇳🇱SANNY 9 m · Dredger 244663839 — —
- 🇪🇸SANTA ELENA TERCERO 18 m · Dredger 225995006 — CLASS B
- 🇮🇹SANTA GIULIA 12 m · Anti-pollution vessel 247382100 — CLASS B
- 🇪🇸SANTA LUCIA UNO 16 m · Anti-pollution vessel 224658980 — CLASS B
- 🇮🇹SANTA LUNA M 23 m 247103820 — —
- 🇺🇸SANTA MARIA 115 m 368364850 — OLD RIVER
- 🇪🇸SANTA MARIA ESPANA 20 m · Noncombatant ship 224111890 — CLASS B
- 🇨🇴SANTA MATILDE 13 m · Pilot vessel 730153196 — CLASS B
- 🇺🇸SANTEE Dredger 338154609 — —
- 🇲🇹SANTIA 11 m · Diving support vessel 229259870 — —
- 🇵🇹SANTIAGO 80 m · Dredger 255915638 9462641 CALLAO
- 🇧🇷SANTOS SCOUT 84 m · Diving support vessel 710004180 9530187 BACIA DE SANTOS
- 🇧🇷SANTOS SERVICE 85 m 710002880 9530199 TMIB ARACAJU
- 🇧🇷SAO PEDRO GLORIOSO 20 m · Search and rescue vessel 710029250 — CLASS B
- 🇬🇧SAORSA NA MARA 12 m · Law enforcement vessel 235033134 — ON SURVEY
- 🇪🇸SAPCAN IV 14 m · Port tender 225981977 — —
- 🇪🇸SAPCAN V 8 m 225982311 — —
- 🇪🇸SAPCAN VI 20 m · Anti-pollution vessel 225984883 — CLASS B
- 🇩🇪SAPHIR 8 m · Search and rescue vessel 211390990 — —
- 🇪🇪SAR ALEV STROM 7 m · Search and rescue vessel 276010230 — VIINISTU
- 🇩🇰SAR BIL GEDSER 6 m · Search and rescue vessel 219029703 — —
- 🇩🇰SAR BIL GRENAA 6 m · Search and rescue vessel 219029706 — —
- 🇩🇰SAR BIL HANSTHOLM Medical transport 219018486 — —
- 🇩🇰SAR BIL NEXOE 6 m · Search and rescue vessel 219029705 — —
- 🇩🇰SAR BIL NR VORUPOR 5 m · Search and rescue vessel 219018494 — —
- 🇩🇰SAR BIL RESERVE 6 m · Search and rescue vessel 219029698 — —
- 🇩🇰SAR BIL THORUPSTRAND 6 m · Search and rescue vessel 219029699 — —
- 🇩🇰SAR BIL THYBOROEN 6 m · Search and rescue vessel 219029708 — —
- 🇫🇷SAR FFSS DARIORITUM Search and rescue vessel 227960120 — —
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