| Cork Week |
| Boats M - N |
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| Sail No | Boat | Type of Boat | Owner | Fleet | Fleet |
| GBR9235R | Mad Max | Maxfun 35 | Andrew Uren | Cork Week IRC1 | |
| IRL50 | Magic Glove | Ker 50 | Colm Barrington | Cork Week IRC0 | |
| GBR3991R | Maimuna | Arpege | Charles Rawsthorne | Cork Week Gentlemans Class | |
| GBR979R | Malice | HOD 35 | Mike Moxley | Cork Week IRC2 | |
| GBR8663R | Maligaya | Swan 82 | Andres Soriano | Cork Week IRC Super 0 | |
| IRL2076 | Manzanita | Quarter Ton | Joxer O Brien & Neil Kenefick | Cork Week IRC6 | |
| IRL39000 | Marinerscove.ie | Mills 39 | David Dwyer | Cork Week IRC1 | |
| NZL99999 | Maximus | Bermuda Sloop | Bill Buckley/Charlie Brown | Cork Week IRC Super 0 | |
| GBR3L | Me Julie | J109 | Five Star Sailing | Cork Week J109 | |
| GBR417 | Merlin | GK34 | Kieran Dorgan | Cork Week IRC5 | |
| IRL1818 | Merlin | 1720 | Des Cummins | Cork Week 1720 | |
| IRL9111 | Merlin of Crosshaven | HB 31 | Kieran Collins | Cork Week IRC5 | |
| GBR7938R | Mighty Max 3 | Prima 38 | Andy Williams | Cork Week IRC1 | Cork Week Prima 38 |
| GBR8383R | Mighty Max Two | Prima 38 | Neil Thomas | Cork Week IRC1 | Cork Week Prima 38 |
| GBR4412 | Miss Behavin | Sigma 33 | Bell,OReilly,Byrne,Keane,Bell & Robertson | Cork Week IRC5 | |
| 4003C | Miss Behavin Again | Sigma400 | John Hodkinson | Cork Week IRC2 | |
| IRL6564 | Monkey Business | Formula 28 | Mr Bill McConnell | Cork Week IRC6 | |
| GBR4709R | Mono of Gibralter | J 109 | Mr John Bassadone | Cork Week J109 | |
| 2198C | Moondance | Swan 44 | John McIntyre | Cork Week Corporate Class | |
| GBR6934T | Morning Star | Starlight 35 | Michael Graham | Cork Week IRC5 | |
| SWE2 | Mosquitto 2 | Backman 21 | Hans Backman | Cork Week Mixed Sports Boats | |
| GBR1381R | Mostly Harmless | Prima 38 | Tom Hayhoe and Natalie Jobling | Cork Week IRC1 | Cork Week Prima 38 |
| GBR2463 | Moustique | Swan 41 | Mr Alan Major | Cork Week IRC4 | |
| IRL1965 | Mustang Sally | Corby 36 | Andrew Creighton | Cork Week IRC1 | |
| GBR1732 | Mustigo II | 1720 | Stephen Scholefield | Cork Week 1720 | |
| GBR9771R | Nebulas | J92 | Garlick & Franklin | Cork Week IRC3 | |
| GBR9824 | Njos | Corby 35 | Mr Tim Octon | Cork Week IRC2 | |
| GBR2522R | No Limit | Beneteau 25 | Mr Ray Cook | Cork Week Mixed Sports Boats | |
| IRL11109 | No Naked Flames | J 109 | Andrew Allen/Colm Monahan | Cork Week J109 | |
| GBR2912R | No retreat | corby 29 | david & jackie riley | Cork Week IRC4 | |
| IRL78 | No-Gnomes | Nic 30 | Leonard Donnery & John Murphy | Cork Week IRC6 |