The design remains a modest, trailerable coastal sailboat. Her numbers and proportions describe a light-displacement weekender rather than a bluewater contender.
Design and Construction
The hull and deck are both solid fiberglass. The boat carries a wing keel rather than a fixed foil, allowing the Aloa 17 to settle into a draft of roughly 1.64 to 1.94 feet, depending on load. That shallow draft lets her enter marinas that would stop a deeper-keeled 17-footer.
Overall length is 17.39 feet, with a beam of 6.56 feet. Her length-to-beam ratio of 2.65 makes her slimmer than 54 percent of comparable designs.
At 1,944 pounds displacement, the Aloa 17 is no heavyweight. She carries 485 pounds of iron ballast, giving her a 25 percent ballast ratio, which sits higher than only 15 percent of similar boats. Her displacement-to-length ratio is 202, placing her among “moderate racers,” with 34 percent of peer designs heavier still.
Rig and Handling
The Aloa 17 has a fractional sloop rig. Her working rig uses 17.4-foot jib and genoa sheets of 5/16-inch diameter, a 43.5-foot mainsheet of the same diameter, and a 38.3-foot spinnaker sheet.
With 134 square feet of sail area against her displacement, her sail-area-to-displacement ratio is 13.78—enough to keep her lively without demanding a racing crew. The theoretical hull speed for a displacement boat of her length is 5.1 knots. The wetted surface of the keel and hull below the waterline is about 107 square feet.
Performance and Comfort
The Aloa 17 stands out for motion comfort. Her Motion Comfort Ratio ranges from 7.2 to 15.7, which ranks her as more comfortable than 96 percent of comparable sailboat designs.
Her capsize screening value is 2.10. By the reviewing standard, that figure would bar her from ocean races, so her strengths plainly lie in sheltered and coastal waters rather than offshore passages.
Load sensitivity is pronounced for a boat of this size. The immersion rate is about 333 pounds per inch, meaning that each additional 333 pounds of cargo lowers her exactly one inch.
Known Issues
The wing-keel arrangement requires vigilance from owners over time. A pivoting foil in a fiberglass trunk is only as trustworthy as its pivot hardware and sealing.
Verdict
The Aloa 17 is a slender, light small sloop with a comfortable motion. Her wing keel and shallow draft open quiet anchorages to a boater of modest means. She isn’t built for the open ocean, but as a trailerable coastal weekender, she offers a rare combination of low weight and high motion comfort for her size.
Pros
- More comfortable in motion than 96 percent of similar sailboat designs
- Wing keel provides 1.64–1.94 ft of draft for marina access
- Light 1,944 lb displacement and fractional sloop rig make her easy to trail and handle
Cons
- Capsize screening value of 2.10 excludes her from ocean racing
- Ballast ratio higher than only 15 percent of peers limits stiffness
- Load immersion of 333 lb/inch makes cargo planning critical
