Design and Construction
The Offshore 40 is a fiberglass monohull with a fin keel and spade rudder, built solid rather than cored in both hull and deck. Her 35-foot waterline and 5.16-foot maximum draft give a hull speed of 7.93 knots. The displacement-to-length ratio of 223.87 places her firmly among moderate-weight cruisers, and the 13.25-foot beam provides the width that, with the lead ballast, underpins the stiffness noted in period data. The fin and spade arrangement favors maneuverability in coastal waters over offshore robustness.
Rig and Handling
She is rigged as a masthead sloop with a 100-percent sail area of 740 square feet, split into a 290.25-square-foot main and a 450-square-foot foretriangle, on an air draft of 54.50 feet. The I measurement of 50 feet and J of 18 feet, with P at 43 feet and E at 13.50 feet, describe a conservative sloop plan. A sail-area-to-displacement ratio of 15.37 and the moderate displacement yield a boat that period assessment called slightly under powered, though her stability and righting character are strengths. She is best suited as a coastal cruiser, not a long-passage design.
Accommodations
The specification record lists zero cabins, zero berths, and zero heads, with headroom shown as zero — these are absent fields in the data rather than a description of a bare shell, so the interior arrangement is not characterized. What is stated is a 150-gallon water capacity described as a good supply range and a 75-gallon fuel capacity termed average for the class, supported by a single 50-horsepower Ford Lehman diesel.
The Verdict
The Offshore 40 is a rare, short-run Canadian coastal cruiser whose principal virtues are stiffness, secure righting behavior, and a practical tankage range for near-shore sailing. The limited production of 14 hulls makes her an uncommon find, and the slightly under-powered sail plan is the main performance caveat against her otherwise reassuring stability numbers.
Pros
- Very stable and stiff with good capsize righting capability
- Solid fiberglass hull and deck construction
- Generous 150-gallon water capacity for coastal use
- Secure 41.86 percent ballast ratio
Cons
- Slightly under powered per period assessment
- Only 14 built, limiting market availability
- Best suited to coastal cruising, not offshore work






