- 🇺🇸R/V REID W. HARRIS — 368154440 — CLASS B
- 🇺🇸R/V SPECTRUM 8 m · Dredger 338370213 — CLASS B
- 🇨🇦R/V TIRIARNAQ 19 m · Medical transport 316040542 — —
- 🇺🇸R/V TOMMY MUNRO 30 m · Noncombatant ship 367527750 8201088 POINT CADET/BILOXI
- 🇺🇸R/V TRITON 8 m · Noncombatant ship 338472054 — —
- 🇺🇸R/V WARFISH 12 m · Diving support vessel 338249113 — —
- 🇺🇸R/V WEATHERBIRD Dredger 367414170 — US PIE
- 🇺🇸R/V ZEPHYR 25 m · Noncombatant ship 338142000 8992845 PLEASANT HBR
- 🇫🇷R0UENPILOT SEQUANA 8 m · Pilot vessel 227974980 — —
- 🇨🇳R0VER 26 m · Dredger 412456789 — CLASS B
- 🇦🇺R100 10 m · Search and rescue vessel 503076600 — —
- 🇦🇺R100 12 m · Search and rescue vessel 503195750 — —
- 🇵🇱R2 7 m · Search and rescue vessel 261505000 — —
- 🇵🇱R3 6 m · Search and rescue vessel 261507000 — —
- 🇵🇱R49 6 m · Search and rescue vessel 261007784 — —
- 🇧🇪R7-ORINOCO Search and rescue vessel 205108000 9903906 OSTEND
- 🇺🇸R\V HOGARTH 24 m · Dredger 368009890 1278422 ST.PETERSBURG,FL
- 🇺🇸R\V OCEAN EXPLORER 19 m 338149686 — ANCOR
- 🇺🇸R\V OSPREY Dredger 368156820 — —
- 🇧🇪RAAN 20 m · Pilot vessel 205650000 9680140 VLISSINGEN REDE
- 🇺🇸RACCOON 29 m · Dredger 368424710 — —
- 🇧🇷RACCSO 13 m · Pilot vessel 710017150 — CLASS B
- 🇨🇦RACE SENTINEL 11 m · Anti-pollution vessel 316047498 — —
- 🇪🇸RADA 17 m · Port tender 224303920 — —
- 🇵🇲RADAR IV PILOT BOAT 16 m · Pilot vessel 361000080 — —
- 🇺🇸RAELYNN IRENE 58 m 367606370 — GREENS BAYOU
- 🇮🇹RAFFY 13 m · Search and rescue vessel 247445600 — CLASS B
- 🇦🇺RAHAJA 8 m · Port tender 503091750 — CLASS B
- 🇳🇱RAIATEA 20 m · Dredger 244690754 — —
- 🇬🇧RAIDER V 12 m · Diving support vessel 235077028 — CLASS B
- 🇫🇮RAINER 12 m · Port tender 230149260 — —
- 🇺🇸RAINIER 71 m · Noncombatant ship 303935000 6711003 NEWPORT, OR
- 🇺🇸RAINMAN 22 m 368102360 — —
- 🇳🇱RAK 27 m · Port tender 244600000 9277266 IJMUIDEN
- 🇳🇿RAKIWA 12 m · Diving support vessel 512204890 — —
- 🇺🇸RALPH C 124 m 368083470 — XX XXX → US^0SPL
- 🇺🇸RALPH HENRY 81 m 367481620 — US^0EB3 → 0TWY
- 🇺🇸RALPH RENFRO 118 m 367556020 — US^0U8A → 0U2K
- 🇳🇱RAM 57 m 244620291 8937259 NLURK
- 🇸🇪RAMBO Port tender 265090010 — —
- 🇩🇰RAMBOLL SURVEYOR 10 m · Port tender 219035549 — CLASS B
- 🇸🇪RAN 12 m 265627640 — —
- 🇺🇸RANDALL D CHAMNESS 364 m 367702340 — USMSY → USCIR
- 🇳🇴RANDI 13 m · Dredger 257846700 — —
- 🇺🇸RANDOLPH C 279 m 367679550 — US^0ERK → 0QAC
- 🇺🇸RANDY BAYGENTS 32 m 367369060 — US^0RL
- 🇺🇸RANDY ECKSTEIN 266 m 366997920 8991009 US^06WF → 0E95
- 🇺🇸RANDY ECKSTEIN 357 m 367638020 — US^0WXP → 0WZB
- 🇺🇸RANDY HOOPER 348 m 366963010 — US^03ME → 0W6S
- 🇺🇸RANDY HOPSON 216 m 367642130 — US^0EZC → 0EYH
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