- 🇳🇴RS NORSK TIPPING I 8 m · Search and rescue vessel 257075210 — —
- 🇳🇴RS NORSK TIPPING II 8 m · Search and rescue vessel 257075230 — —
- 🇳🇴RS OSCAR TYBRING V 23 m · Search and rescue vessel 259005900 — 91679674 CH-16
- 🇳🇴RS RAGNAR S. PLATOU 17 m · Search and rescue vessel 257126540 — VHF16 TLF02016
- 🇳🇴RS SF06 8 m · Search and rescue vessel 257075370 — —
- 🇳🇴RS SJOVEKTEREN 8 m · Search and rescue vessel 258012170 — —
- 🇳🇴RS UNI SOGNEFJORD 13 m · Search and rescue vessel 257037300 — —
- 🇬🇧RS VENTURE 9 m · Port tender 232058834 — —
- 🇺🇸RS WEEKS 86 m · Dredger 366955430 — —
- 🇬🇧RS11 6 m · Dredger 232008611 — CLASS B
- 🇳🇴RS127 ANNE-LISE 14 m · Search and rescue vessel 257895900 — LILLESAND
- 🇳🇴RS169 ODD FELLOW III 22 m · Search and rescue vessel 257035500 — SAR COAST
- 🇮🇩RSA MARINE 3 105 m · Dredger 525100167 8693449 LAMONGAN
- 🇸🇧RSIPV TARO 39 m · Law enforcement vessel 557009600 4734207 HONIARA
- 🇦🇺RSL REDCLIFFE QF32 9 m · Search and rescue vessel 503004330 — CLASS B
- 🇸🇪RTJ MOTALA Search and rescue vessel 265068730 — CLASS B
- 🇹🇭RUA DIN 11 40 m · Dredger 567000011 9818125 SAMUT PRAKARN
- 🇦🇪RUBBAN 19 m · Pilot vessel 470220000 — JEBEL ALI
- 🇳🇴RUBEN 12 m · Dredger 257050670 — CLASS B
- 🇺🇸RUBY GONSOULIN 204 m 367006420 — US^0UYM → 06NG
- 🇺🇸RUBY J 23 m 367683830 — PH
- 🇬🇧RUBY MAY 12 m · Diving support vessel 235078698 — CLASS B
- 🇮🇩RUBY PLATFORM 81 m · Noncombatant ship 525009190 9578268 TUBAN
- 🇵🇦RUDY 15 m · Diving support vessel 354044000 — CLASS B
- 🇺🇸RUDYERD BAY 15 m · Anti-pollution vessel 366882040 — WRANGELL AK
- 🇩🇪RUEGEN 67 m · Law enforcement vessel 211102510 9962108 ON PATROL
- 🇩🇪RUESTERBERGEN 12 m · Pilot vessel 211187510 — RUESTERBERGEN
- 🇺🇸RUFUS E WALKER Law enforcement vessel 368215720 — CLASS B
- 🇳🇱RUKO 30 m · Dredger 244030690 — LOOSDRECHT
- 🇳🇿RUKU 7 m · Diving support vessel 512007391 — CLASS B
- 🇳🇿RUKUWAI II 7 m · Diving support vessel 512000771 — —
- 🇵🇹RUMO 81 m 263440936 — CLASS B
- 🇫🇮RUOPPAUSLAUTTA JEPPE 18 m · Dredger 230168190 — CLASS B
- 🇧🇬RUSALKA 27 m · Anti-pollution vessel 207622430 — CLASS B
- 🇺🇸RUSSELL MARINE II 63 m 368362850 — US^06SR → 0Z9P
- 🇺🇸RUSSELL STEINER 116 m 368380070 — US^10GX → 0ZLB
- 🇺🇸RUSTY HILL 110 m 366826930 — US^0SQ2 → ?? ???
- 🇺🇸RUSTY MOORE 213 m 368149820 — PASCAGOULA MS
- 🇵🇹RUTE 81 m 263440937 — CLASS B
- 🇨🇦RUTH IVY 12 m · Diving support vessel 316054136 — CLASS B
- 🇺🇸RUTH M. REINAUER 153 m 367390130 9559779 US NYC → US PVD
- 🇨🇳RUYAN333 91 m · Dredger 413214140 — DONG GUAN
- 🇳🇱RUYTER 82 m · Dredger 245231000 9085467 VLISSINGEN
- 🇫🇮RV 92 20 m · Law enforcement vessel 230157740 — I
- 🇫🇮RV 95 20 m · Law enforcement vessel 230157770 — —
- 🇦🇺RV APOLLO 8 m · Dredger 503566700 — —
- 🇦🇺RV BOMBORA Law enforcement vessel 503041620 — —
- 🇮🇪RV CELTIC EXPLORER 65 m 250487000 9244439 RESEARCH
- 🇨🇦RV CISCO 12 m · Noncombatant ship 316034157 — —
- 🇦🇺RV CODA 6 m · Diving support vessel 503168700 — CLASS B
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