Irwin 45
Description
The Irwin 45 (1982–1985, ~40 built) is the rare, slightly stretched and ketch-rigged evolution of the successful Irwin 43 Mk III center-cockpit hull, offering palatial interior volume in a still-manageable 45-foot package. With an LOA of 45′6″, 37′6″ waterline, 13′6″ beam, 29–30,000 lb displacement, and a shoal 4′11″ Scheel keel carrying 11,000 lb encapsulated ballast, it pairs a very conservative ketch rig (≈950–970 sq ft, SA/D ~14.8) with one of the most livable layouts ever fitted into a production boat: a true walk-in aft owner’s stateroom with centerline queen and en-suite head, full-standing engine room/workshop, restaurant-sized U-shaped galley, raised saloon with panoramic visibility, and a proper forward guest stateroom with second head.
Construction Details
| Designer | Ted Irwin |
|---|---|
| Builder | Irwin Yachts |
| Length | 45.000 ft |
| LOA | 45.000 ft |
| LWL | 32.000 ft |
| Beam | 11.500 ft |
| Displacement | 23000 lb |
| Max Draft | 6.500 ft |
The standard boat dimensions
| i | 53 ft |
|---|---|
| j | 17.75 ft |
| p | 46.17 ft |
| e | 17.83 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 53 ft | 17.75 ft | 46.17 ft | 17.83 ft | - | - | - | - |
Sails
Irwin 45 - MAINSAIL
| Luff | * 46.17 ft - (14073 mm) |
|---|---|
| Foot | * 17.83 ft - (5435 mm) |
| Leech | * 48.73 ft - (14853 mm) |
| Tack Angle | * 88 ° |
| Diagonal | * 48.91 ft - (14908 mm) |
| Head (inches) | * 6 in - (152 mm) |
| Area | 411.18 ft² |
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Irwin 45 - JIBSAIL
| Luff | * 44.71 ft - (13628 mm) |
|---|---|
| Foot | * 23.69 ft - (7221 mm) |
| Leech | * 38.53 ft - (11744 mm) |
| Percentage LP | * 115 % |
| Length Perpendicular | * 20.41 ft - (6221 mm) |
| Deck Angle | * 12 ° |
| Area | 456.24 ft² |
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Irwin 45 - GENOA
| Luff | * 53.1 ft - (16185 mm) |
|---|---|
| Foot | * 28.82 ft - (8784 mm) |
| Leech | * 49.78 ft - (15173 mm) |
| Percentage LP | * 150 % |
| Length Perpendicular | * 26.63 ft - (8117 mm) |
| Deck Angle | * 4 ° |
| Area | 706.83 ft² |
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Irwin 45 - SPINNAKER
| Stays | * 53.1 ft - (16185 mm) |
|---|---|
| MidGirth | * 31.95 ft - (9738 mm) |
| Foot | * 31.95 ft - (9738 mm) |
| Perc LP | * 180 % |
| Area | 1442.06 ft² |
| Edit in Calculator | |
Disclaimer. Boats are not all the same -- even when produced in the same factory of the same model. Sailrite does its best to publish accurate dimensions, but we often find it worthwhile to have our customers measure their boats carefully before we produce kits for them. You should take the same precautions, especially when the data is not from Sailrite. The information on this site is not guaranteed to be accurate. Sailrite offers this content as a service to our community, but takes no responsibility for the reliability of the data provided.