The Irwin 54, produced in both cutter and ketch formats, was designed by Ted Irwin and built in the USA by Irwin Yachts.
Underwater Configuration: Stub keel with centreboard and semi-balanced rudder
Hull Material: GRP (Fibreglass)
Length Overall: 54'0" (16.5m)
Waterline Length: 44'0" (13.4m)
Beam: 15'4" (4.7m)
Draft: 5'6" (1.7m)
Rig Type: Cutter (as shown in pic, but also produced as a staysail ketch)
Displacement: 46,000lb (20,865kg)
Designer: Ted Irwin
Builder: Irwin Yachts (USA)
Year First Built: 1988
'Lazy Bones', an Irwin 54 Sailboat for Sale
Although 'Lazy Bones' is no longer available, the excellent pics and informative text are retained here for the benefit of anyone researching this popular cruising yacht.
1. Sail Area/Displacement Ratio: 15.7
2. Ballast/Displacement Ratio: 34.8
3. Displacement/Length Ratio: 241
4. Comfort Ratio: 39.9
5. Capsize Screening Formula: 1.7
1. A Sail Area/Displacement Ratio of 15.7 suggests that the Irwin 54 will need a stiff breeze to get her going. In light conditions, unless you've got plenty of time on your hands, motor-sailing may be the way to go.
2. A Ballast/Displacement Ratio of 34.8 means that a sailboat like the Irwin 54 (which doesn't have a stiffness-enhancing bulb keel), is likely to benefit from being reefed early to keep her sailing upright in a moderate breeze.
3. A Displacement/Length Ratio of 241, tells us the Irwin 54 is a moderate displacement cruiser, which means she'll carry all your cruising gear without it having a dramatic effect on her performance. Most of today's sailboats intended for offshore cruising fall into this displacement category.
4. Ted Brewer's Comfort Ratio of 39.9 suggests that crew comfort of an Irwin 54 in a seaway is similar to what you would associate with the motion of a moderate bluewater cruising boat - a predictable and acceptable motion for most seasoned sailors.
5. The Capsize Screening Formula (CSF) of 1.7 tells us that an Irwin 54 would be a safer choice of sailboat for an ocean passage than one with a CSF of more than 2.0.
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