- OPPORTUNITY Passenger 367791540 — NEW YORK NY
- OPPORTUNITY Sailing 368305260 — —
- OPPORTUNITY KNOTS Passenger 368298610 — CLASS B
- OPTICAL DELUSION Pleasure craft 338522152 — CLASS B
- OPTIMIST Fishing 338301985 — —
- OPTIMIST Sailing 338422726 — —
- OPTIMIST Pleasure craft 338539014 — —
- OPTIMUM Pleasure craft 338534506 — CLASS B
- OPTIMUS Fishing 367594860 1073741823 —
- OPTIMYSTIC Pleasure craft 338481925 — —
- OPTIMYSTIC Sailing 338519338 — —
- OPTIMYSTIC Pleasure craft 368344250 — CLASS B
- OPTIMYSTIC ONE Other 367610460 — —
- OPTIONAL NECESSITY Pleasure craft 338152894 — —
- OPTIONS Pleasure craft 338568132 — CLASS B
- OPTIONS Pleasure craft 368317230 — CLASS B
- OPTITIME Pleasure craft 338571667 — CLASS B
- OPUS Sailing 338174189 — —
- OPUS Sailing 338402184 — —
- OPUS Passenger 368418950 — EVERGLADES,FL
- OPUS ONE Pleasure craft 338218764 — CLASS B
- OPUS TWO Pleasure craft 338160457 — CLASS B
- OPUS V Pleasure craft 367576390 — —
- OR363ADC Pleasure craft 338254844 — —
- ORA Sailing 368480690 — CLASS B
- ORACLE Fishing 367674280 — —
- ORACLE Other 368106020 — GULF AMERICA
- ORAL FREEMAN Passenger 366830050 — CLASS B
- ORAN MOR Pleasure craft 338536191 — —
- ORANGE Special purpose 367505870 — CARPENTERS BAYOU
- ORANGE SAFETY Pleasure craft 338330066 — —
- ORANGE WHIP Sailing 368377830 — —
- ORATA Pleasure craft 338332563 — —
- ORBIT Other 368179320 — —
- ORCA Pleasure craft 338495176 — CLASS B
- ORCA Pleasure craft 338504639 — —
- ORCA Pleasure craft 338505506 — —
- ORCA Sailing 367397190 — CLASS B
- ORCA Sailing 367678130 — —
- ORCA Sailing 368162510 — CLASS B
- ORCA Pleasure craft 368345060 — CLASS B
- ORCA Sailing 368347210 — CLASS B
- ORCA Sailing 368405730 — —
- ORCA I Passenger 368135710 1073741823 —
- ORCA II Passenger 368135730 1073741823 SEATTLE
- ORCA MIST Pleasure craft 367479380 — CLASS B
- ORCA ROB Pleasure craft 338487392 — —
- ORCHID LADY III Fishing 367305570 8983753 CLASS B
- ORCIN WHALES Pleasure craft 368050870 — —
- ORCINUS II Other 368472840 — CLASS B
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