Design and Construction
King's 36.5-foot hull carries a 28.33-foot waterline and a 10.83-foot beam, with 14,000 pounds of displacement and 5,000 pounds of lead ballast in a fin keel. The fiberglass hull and lead-ballasted fin place her among the heavier cruiser cohort for her length, yet her ballast ratio of 36 percent sits above only about a third of comparable designs. Reviewers classify her displacement-length ratio of 275 as a "heavy cruiser," with 46 percent of similar boats heavier still, and her length-to-beam ratio of 3.37 makes her slimmer than 69 percent of peers. The wetted surface runs about 344 square feet. A Motion Comfort Ratio of 29.2 leaves her more comfortable than 58 percent of similar sailboats more comfortable than 58% of all similar sailboat designs, and a capsize screening value of 1.80 speaks to her offshore posture.
Rig and Handling
The Islander 37 is a masthead sloop whose sail-plan data mark her as significantly overrigged—carrying more rig than 82 percent of similar sailboats significantly overrigged. The reference sail area of 604.7 square feet yields a sail-area-to-displacement ratio of 16.7, rising to 19.7 with a 135 percent genoa, and that index puts her faster than 46 percent of comparable designs in light wind. The masthead rig supports a mainsail of roughly 300 square feet and a working jib near 303 square feet, while genoa options span from about 331 to 561 square feet and downwind inventory includes asymmetrical and symmetric spinnakers to 956 square feet. Under power, a Universal Atomic 4 gasoline engine of 30 horsepower on a shaft drive gives a calculated maximum of about 5.8 knots against a theoretical hull speed of 7.1 knots.
Accommodations
Below, the Islander 37 provides two cabins with a 4+2 berth layout, a galley, and a toilet facility, finished in mahogany like many contemporaries. Headroom is above average for the class. The 10.83-foot beam and 28.33-foot waterline support a livable mid-size cruiser interior without the volume of later wide-beam designs.
Refits and Ownership
A distinctive ownership path is the Yachtcraft kit version, also known as the Yachtcraft 37, which let buyers complete the boat at home for cost savings. The boat was also built at other yards beyond the original Newport Beach facility. The Atomic 4 gasoline inboard remains the cited power plant, and the shaft-drive transmission is straightforward for period-correct upkeep.
The Verdict
The Islander 37 is a King-designed CCA-era cruiser-racer with genuine offshore credentials, a heavy-cruiser displacement profile, and an unusually tall rig for her size. Her modest production run and kit-build option make her a niche but coherent choice for sailors wanting classic lines and a seakindly motion.
Pros
- Bruce King design with CCA-ethos seaworthiness for coastal or offshore use
- Lead fin keel, 5,000 lb ballast, 14,000 lb displacement for a steady platform
- Masthead sloop with large sail-area envelope and overrigged light-air potential
- Above-average headroom and mahogany two-cabin interior
Cons
- Ballast ratio below most peers at 36 percent
- Gasoline Atomic 4 inboard rather than diesel
- Only about 50–60 built, limiting spares and comparison fleet
