| Cork Week |
| Boats I - J |
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| Sail No | Boat | Type of Boat | Owner | Fleet |
| GBR2909L | Idris | Corby 29 | Mr John Mackie | Cork Week IRC4 |
| IRL9603 | Imposter | Impala 28 OOD | Mr Mark Uniacke | Cork Week IRC6 |
| GBR8846T | Impulse | Dufour 40 | Prof. M. Horrocks & Mr. J. Soar | Cork Week IRC2 |
| IRL9570 | Impulsive | Impala 28 | Anthony & Jean Keating | Cork Week IRC6 |
| GBR1311R | In The Doghouse | First Class Challenge | Steve Nicholls | Cork Week IRC3 |
| GBR565R | Indiscretion | First 36.7 | Mr Richard Fildes | Cork Week IRC3 |
| IRL2005 | Indulgence | Dehler 36 | Aidan Heffernan | Cork Week IRC2 |
| FRA19484 | Inis-Mor | Bernard GOUY | Cork Week IRC3 | |
| IRL9000 | Isor | JS 9000 | Patrick O Donovan | Cork Week Mixed Sports Boats |
| GBR9421R | Ixthyos | X412 | Mr John Hick | Cork Week IRC2 |
| GBR6663R | Jackhammer | J109 | Mr John Ballinger | Cork Week J109 |
| GBR9570T | Jaguar of Burnham | J109 | Mr Adrian Lower | Cork Week J109 |
| GBR9791R | Jammin of Poole | J110 | Mike Riley | Cork Week IRC3 |
| GBR5433R | Jammy Dodger | J 133 | Mr Neil Martin | Cork Week IRC1 |
| GBR8537R | Jangada Too | J-109 | Freshfields Bruckhaus Deringer | Cork Week J109 |
| IRL3405 | Jearonimo | ROC 40 | David McNiven | Cork Week IRC4 |
| GBR7509R | Jeez-Louise | J-109 | Jamie Arnell | Cork Week J109 |
| GBR800 | Jenga | J 80 | Mr & Mrs Marie-Claude & Paul Heys | Cork Week Mixed Sports Boats |
| GBR60R | Jeronimo | J 133 | Jonathan Goring | Cork Week IRC0 |
| GBR8709R | Jetstream | J109 | Mr John Prideaux | Cork Week J109 |
| GBR3949R | Jinja | J120 | Mr Ian Matthews | Cork Week IRC1 |
| GBR9498R | Joie de Vie | J/109 | Glenn Cahill | Cork Week J109 |
| GBR1756 | Joker In The Pack | 1720 | Nick Daily-Hunt | Cork Week 1720 |
| GBR5407R | Joopster | First 40.7 | Impression Sailing | Cork Week Corporate Class |
| IRL1078 | Joxer | J92 | Rory & Cathy Staunton | Cork Week IRC4 |
| GBR8839R | Juanita | 39 | Frank Sykes | Cork Week IRC2 |
| GBR133L | Jump | J133 | Stewart Hawthorn | Cork Week IRC1 |
| GBR8822R | Jump & Shout | X332 | James Crockatt | Cork Week X332 |
| IRL2007 | Jump Juice | Ker 37 | Conor & Denise Phelan | Cork Week IRC1 |
| IRL1129 | Jump the Gun | J 105 | Michael Monaghan & John Kelly | Cork Week IRC3 |
| GBR2709R | Jumping Jellyfish | J 109 | David Richards | Cork Week J109 |
| GBR9487R | Jumunu | J109 | Alistair Ray | Cork Week J109 |
| 535 | Junto | J80 O/D | Peter Kent & Malcolm Downie | Cork Week Mixed Sports Boats |
| FRA28305 | Just Aquaholix | J105 | Debbie Hall, Joanna Finn, Siobhan Hayes | Cork Week IRC3 |
| GBR6912T | Just Enough | J92 | Andy Hill | Cork Week IRC4 |
| IRL3506 | Just Jasmin | Match 350 | Philip Smith | Cork Week IRC3 |
| GBR4881T | Just Magic | Val 35 | Frank Ellwood | Cork Week IRC3 |