| O'Brien Iv, William F. | 560 | Krtistine Ann | 36 | 1234093 | CL |
| O'Brien, John H. | 146729 | Knot Bad | 26 | MS3549AH | B1 |
| O'Brien, Kevin P. | 142066 | Knot 2 Nite | 20 | MS7170KN | B1 |
| O'Brien, Tim G. | 165726 | Mad Dog | 35 | 961680 | B1 |
| O'Connell, Ian P. | 161848 | T/T Reselient | 32 | 1174252 | B1 |
| O'Connell, James M. | 130882 | 3jc | 24 | MS8688HB | SR |
| O'Connell, Richard D. | 163006 | | | | SS |
| O'Connell, Daniel C. | 139362 | O,Sea | 19 | RI0982R | B1 |
| O'Connell, Michael | 202 | Wild Goose | 36 | MS7184AW | CL |
| O'Connell, Daniel P. | 163908 | Stacey Ellen | 38 | MS2273AZ | SS |
| O'Connell, David T. | 1840 | Erin'S Hope | 35 | MS8796DT | CL |
| O'Connell, Dennis C. | 6018 | Lady Elaine | 44 | MS9495DC | CL |
| O'Connell, James E. | 107602 | Summer Rules | 18 | MS3599HT | B1 |
| O'Connor, Michael J. | 159549 | | | | RR |
| O'Connor Jr., James J. | 414 | Six Oaks | 22 | MS5503RR | CL |
| O'Donnell, Thomas F. | 93737 | Paid Over | 24 | MS0052Z | B1 |
| O'Donnell, Thomas Joseph. | 163046 | | | | RR |
| O'Farrell, Kevin P. | 155875 | | | | IN |
| O'Hara Jr., Francis J. | 145964 | Sunlight | 109 | 1098004 | B3 |
| O'Hara Jr., James W. | 1779 | Not Named - (O Hara) | 12 | MS5417SP | CL |
| O'Hara Corporation | 165554 | Pyxis | 83 | 1238915 | B2 |
| O'Hara Corporation | 146097 | Ranger | 83 | 1143738 | B2 |
| O'Hara Corporation | 156343 | Resolution | 95 | 1141511 | ON |
| O'Hara Corporation | 153294 | Polaris | 84 | 1198545 | B3 |
| O'Hara Corporation | 156341 | Monomoy | 83 | 692922 | ON |
| O'Hara Corporation | 149838 | Nashira | 78 | 553032 | B2 |
| O'Hara Corporation | 156342 | Foremost | 82 | 606623 | B2 |
| O'Hara Corporation | 156349 | Friendship | 99 | 623188 | ON |
| O'Hara Corporation | 156350 | Heritage | 88 | 626591 | ON |
| O'Hara Corporation | 104712 | Araho | 106 | 606424 | OL |
| O'Hara Corporation | 157064 | Arcturus | 85 | 1219387 | B2 |
| O'Hara Corporation | 163441 | Weatherly | 91 | 1153437 | B2 |
| O'Hare, James L. | 163704 | | | | RR |
| O'Keefe, Robert R. | 164391 | Line Of Credit | 33 | 1233232 | B1 |
| O'Keefe, Timothy | 3261 | Lori O | 45 | 918270 | CL |
| O'Leary, David J. | 163007 | Molly B | 23 | RI7762T | B1 |
| O'Leary, Richard J. | 134230 | Not Named - (O Leary) | 14 | MS8538AS | SS |
| O'Loughlin, Peter P. | 16624 | Decapod | 32 | 915473 | CL |
| O'Maley, Kevin A. | 1654 | Connemara Bay | 37 | 612164 | CL |
| O'Maley, Kellen | 165284 | Lila O | 19 | MS5069BT | B1 |
| O'Neil, Brian C. | 4947 | Keva Marie | 21 | MS2896AB | CL |
| O'Neil, Gregory | 53381 | Hawk | 31 | 984450 | B1 |
| O'Neil, Robert A. | 159559 | Dialed In | 26 | MS2210ZE | B1 |
| O'Neill, Timothy P. | 161721 | Irish Jig | 25 | MS2002DM | B1 |
| O'Neill, Jeffrey C. | 140466 | Snow Bear | 32 | MS1598AB | B1 |
| O'Neill, John F. | 159623 | Jack Sprat | 18 | MS1109KH | B1 |
| O'Neill, Hugh | 157478 | Not Named - (O Neill) | 25 | MS3758AZ | B1 |
| O'Neill, Dennis M. | 3060 | Relentless Pursuit | 23 | MS0870HU | CL |
| O'Reilly Jr., Thomas G. | 5676 | Karen M | 35 | 974300 | CL |
| O'Rourke, Paul M. | 136414 | Olga Marie | 26 | 1094264 | B1 |
| O'Shea, James P. | 163337 | | | | SS |
| O'Sullivan, Peter M. | 144437 | Spur Of Momont | 18 | MS3566ZT | IN |
| Oakley, Floyd R. | 3457 | Andrea Lynn | 21 | MS6256HY | CL |
| Ober, Theodore E. | 5788 | Tko | 22 | MS6533AT | CL |
| Obrien Jr., Francis C. | 62068 | | 15 | | SS |
| Obrien, Casey | 154932 | | | | SS |
| Obrien, Raymond | 154931 | | | | SS |
| Obrien, Mark L. | 152071 | | | | SS |
| Obrien, Sean T. | 161758 | | | | RR |
| Ocean Boy, Inc | 155439 | Ocean Boy | 74 | 544841 | B2 |
| Ocean Clam Inc Of Ma | 163678 | Madison 3 | 70 | 544976 | B2 |
| Ocean Fishing Llc | 149595 | Ocean Lady | 75 | 611992 | B2 |
| Ocean Fishing Llc | 154727 | Pacer | 73 | 1131546 | B2 |
| Ocean Gold Inc | 150185 | Ocean Gold | 78 | 1037847 | ON |
| Ocean Pride, Inc. | 155209 | Ocean Pride | 79 | 973175 | ON |
| Ocean Princess Inc | 150182 | Ocean Princess | 81 | 916992 | ON |
| Ocean Prowler Inc | 150189 | Ocean Prowler | 84 | 1120035 | ON |
| Ocean Queen Inc | 150188 | Ocean Queen | 74 | 673713 | ON |
| Ocean Wave Scallop Co Inc | 160791 | Ocean Wave | 68 | 280172 | ON |
| Oceanside Marine | 165267 | Michael Jr | 98 | 583416 | B2 |
| Ochse, Arthur A. | 153701 | Christian & Alexa | 87 | 937930 | B2 |
| Oconnell, Mark W. | 164863 | | | | SS |
| Oconnor Jr., John J. | 158803 | | | | SR |
| Odlin, Christopher M. | 165350 | Not Named - (Odlin) | | ME0673V | SR |
| Odlin, James A. | 143976 | Teresa Marie Iv | 81 | 1089264 | ON |
| Odlin, James A. | 121322 | Teresa Marie Iii | 83 | 677998 | ON |
| Odlin, James A. | 133452 | Harmony | 95 | 930191 | ON |
| Oehme, Seth L. | 1818 | Aja O | 36 | 909604 | CL |
| Oeung, Samoeung | 161200 | The Reel Thing | 21 | MS4224AX | B1 |
| Offshore Enterprises, Inc | 152531 | Gina Marie | 42 | 1090277 | B1 |
| Ogg, William | 2640 | Pursuit | 44 | 934271 | CL |
| Ogiba Jr., Edwin S. | 162911 | | | | SR |
| Ohnemus, William C. | 6043 | Sea-Gem | 30 | 616414 | CL |
| Olander, Fredrick G. | 146270 | Saramon | 23 | MS2222KR | B1 |
| Oleary, Thomas D. | 110018 | Seascape | 20 | MS3327FB | B1 |
| Oleary, James D. | 161354 | Joanie O | 24 | MS5034AX | B1 |
| Oleson, Peter M. | 150766 | Hammerhead | 25 | MS0098PO | B1 |
| Olival, Thomas | 150518 | On Again | 24 | MS8707ZB | B1 |
| Oliveira, Pedro | 159206 | Not Named - (Oliveira) | 20 | MS3035AU | RR |
| Oliveira, Philip | 161576 | 7 Days A Week | 23 | MS6752AV | B1 |
| Oliveira, Michael S. | 161124 | Billie B Ii | 44 | 435998 | B1 |
| Oliver, Scott J. | 96211 | Chatterbox | 26 | MS8586KG | B1 |
| Oliver, Richard | 153493 | Thunnus | 34 | 1095717 | B1 |
| Oliver, William R. | 1713 | Maranatha | 35 | 605591 | CL |
| Oliver, Brian W. | 150198 | | | | SR |
| Oliver, Donald E. | 126184 | Lee-Marie | 31 | 1048785 | B1 |
| Oliver, Raymond S. | 138599 | Not Named - (Oliver) | 20 | MS4535AY | SR |
| Oliver, William E. | 611 | Mary Jan | 22 | MS0107W | CL |
| Olivia & Rafaela Fishing Llc | 153495 | Olivia & Rafaela | 71 | 553777 | ON |
| Olivia & Rafaela Fishing Llc | 144733 | Ilha Brava Ii | 76 | 693587 | ON |
| Olsen, Kirk L. | 70128 | | | | SS |
| Olson, Thomas A. | 162979 | Not Named - (Olson) | 22 | MS4995HS | IN |
| Olson, Eric R. | 160852 | Mako | 20 | MS0921E | SR |
| Olson, Steven D. | 159781 | | | | RR |
| Olson, Robert W. | 108095 | Not Named - (Olson) | 14 | MS1360HT | SS |
| Olson, Jeffery S. | 165318 | | | | IN |
| Olson, Robert F. | 161371 | | | | RR |
| Olson Jr., Albert W. | 7115 | Easy Livin Ii | 40 | 961753 | CL |
| Olsovsky, Charles | 152856 | Virginia Dare | 92 | 602653 | B2 |
| One Son Fishing Llc | 158651 | Flight 1 | 60 | 648425 | ON |
| Oneill, Robert W. | 165061 | | | | RR |
| Oneill, Theon K. | 165096 | The Love Boat | 17 | MS9412AY | B1 |
| Oneill, Mike J. | 159972 | Alcazar35 | 35 | 1189565 | B1 |
| Oneonta Fisheries Inc | 148385 | Resilient | 83 | 1038788 | ON |
| Oneppo, Derek | 164857 | The Tree Guy | 31 | 230842 | B1 |
| Onorato, Ronald A. | 138287 | Sea Dog | 23 | NY6494FR | B1 |
| Opie, Douglas B. | 5437 | Broken Arrow | 28 | MS1224SL | CL |
| Opozda, Edmund K. | 152953 | Lori Anne | 19 | MS3491AR | B1 |
| Opozda, Keith E. | 165676 | | | | SS |
| Orcutt, Peter | 155322 | Not Named - (Orcutt) | 22 | MS8309HB | IN |
| Orcutt, Jeff M. | 139577 | Not Named - (Orcutt) | 22 | MS8309HB | IN |
| Orcutt, Danielle | 164957 | | | | RR |
| Orcutt, Patricia | 163079 | Not Named - (Orcutt) | 22 | MS8509HB | SR |
| Ordile, Anthony R. | 5361 | No Vessel - (Ordile) | | | CL |
| Ordonez, Jose J. | 155876 | Victoria | 26 | MS9773AS | B1 |
| Orion Venture Llc | 150186 | Orion | 82 | 611248 | ON |
| Orion Venture Llc | 164092 | Gypsy Girl | 85 | 1100877 | ON |
| Ork, Chea | 156636 | | | | RR |
| Orlando, Anthony | 164713 | | | | RR |
| Orlando, Christopher G. | 134930 | Saltine3 | 30 | MS2824AK | B1 |
| Orlando, Joseph | 92124 | Padre Pio | 65 | 632107 | ON |
| Ormsby, Garry P. | 69683 | Get It On | 23 | MS4457ZB | B1 |
| Orsillo, Chris A. | 9319 | Trapper John | 42 | 911382 | CL |
| Osborne Iii, Charles E. | 3657 | Buckeye | 34 | MS4601AX | CL |
| Osgood, Alfred S. | 725 | Starlight | 78 | 582665 | B2 |
| Oshaughnessy, Henry T. | 163996 | Gaelic Wake | 26 | 640412 | B1 |
| Osier, David J. | 148557 | Blue Water Iii | 56 | 641517 | ON |
| Osier, David J. | 162624 | Paulo Marc | 63 | 690278 | ON |
| Osmond, Ryan P. | 145012 | | | | RR |
| Osmond, Charles J. | 3454 | Joz | 19 | MS6095KN | CL |
| Osowski, Angela J. | 156624 | | | | SS |
| Oster, Robert G. | 530 | Chelle Rae | 32 | 1024816 | CL |
| Ostrander, Stephen T. | 158214 | Abby O | 32 | MS6906AD | B1 |
| Ostrom, Joshua E. | 155514 | | | | SR |
| Ostrowski, Matthew F. | 139315 | Not Named - (Ostrowski) | 20 | MS9524AA | B1 |
| Osullivan, Patrick | 150515 | 4 Sulls | 23 | MS1375PH | B1 |
| Othote, Louis J. | 131582 | Not Named - (Othote) | 16 | MS4686KW | RR |
| Ott, Timothy W. | 158186 | Hot Two | 48 | NY5232FA | B1 |
| Ott, Timothy W. | 165612 | Bad Fish | 50 | NY6798GK | B1 |
| Ottino, Keith R. | 165782 | | | | SS |
| Otts, Kenneth E. | 165732 | | | | SS |
| Ouellet, Joel M. | 163288 | Lady Lola | 24 | MS8009BH | RR |
| Ouellette, Roger N. | 154815 | Finaddicts | 24 | MS7226AF | B1 |
| Ouillette, Edward J. | 107648 | Not Named - (Ouillette) | 18 | MS3735KV | RR |
| Oung, Vannary | 165590 | Not Named - (Oung) | 18 | RI3039T | B1 |
| Our Jr., John L. | 71350 | Miss Fitz | 42 | 983256 | ON |
| Our, John D. | 1173 | Barbara O | 35 | 1200874 | B1 |
| Ourique, Jose S. | 156964 | Grandpa | 20 | MS0728JO | B1 |
| Owen, Carlos J. | 138908 | My Honey | 28 | 688380 | RR |
| Owens, Joseph P. | 138849 | Miss Elizabeth | | 1062871 | B1 |
| Oyer, Kevin J. | 152823 | Not Named - (Oyer) | 14 | MS8307AS | SS |
| Ozolins, Shawn J. | 151927 | Kelly J | 26 | MS1217SK | B1 |