Design and Construction
Maas gave the Aloa 27 a length-to-beam ratio of 2.86, a proportion that makes her beamy for her length; comparative data places her as more spacious than 73 percent of all similar designs on that measure anchor. The hull and deck are solid fiberglass with no core, and the keel is iron rather than lead, keeping building costs and weight down. With 2,094 pounds of ballast in a 6,193-pound displacement, the ballast ratio works out to 37 percent — higher than 34 percent of comparable sailboats — and the boat draws between 4.92 and 5.22 feet depending on load, shallow enough to slip into most marinas. Her displacement-length ratio of 224 puts her among moderate racers, and 58 percent of similar designs are heavier, so she is light on her feet without being a featherweight.
Rig and Handling
The masthead rig carries a sail-area-to-displacement ratio of 18.88, a modest but usable figure for a cruiser of this size. Standing sail-control geometry is well documented: jib and genoa sheets run about 27 feet at 3/8-inch diameter, the mainsheet is roughly 68 feet long at the same diameter, and a spinnaker sheet runs about 60 feet anchor. The wetted surface of the hull is about 247 square feet, and the immersion rate is 761 pounds per inch, meaning she sits sensibly in the water and responds predictably to crew weight and stores. The theoretical hull speed is 6.4 knots, while fitted engine options produce calculated maxima of 4.0 knots behind an 8-horsepower Yanmar YS8 and 5.2 knots behind a 13-horsepower Volvo Penta MD7A.
Accommodations
Below, the Aloa 27 is equipped with four berths and a fresh water capacity of 238 liters, generous for a 27-footer and supporting modest coastal cruising without constant tank-watching. Headroom is above average for the class, which combined with the beamy hull proportions makes the interior feel less cramped than her length suggests. The Motion Comfort Ratio falls between 18.7 and 19.5, more comfortable than 42 percent of similar designs — not a soft-riding passagemaker, but a stable and reasonable quarters for weekend use.
Performance Limits
The capsize screening value is 2.07, a figure that indicates the boat would not be accepted to participate in ocean races anchor. That same number, alongside her moderate displacement and fin-keel form, frames her as a sheltered-water and coastal cruiser rather than a bluewater contender. Her theoretical maximum of 6.4 knots and engine speeds in the 4-to-5-knot band suit harbor hops and bay sailing better than long offshore passages.
Known Issues
The iron keel on an older example is prone to corrosion and coating breakdown over decades in the water. The solid fiberglass hull and deck avoid the moisture-intrusion problems of cored construction.
The Verdict
The Aloa 27 is a pragmatic late-seventies small cruiser: beamy, light, and simple, designed by Frans Maas and built in volume by Aloa Marine. She offers more interior room than most peers of her length, easy marina access, and a forgiving coastal profile, while her capsize screen and modest sail plan mark clear limits on where she should be asked to go.
Pros
- Beamy hull gives more space than 73 percent of similar designs
- Above-average headroom and four berths for a 27-footer
- Shallow-enough draft for most marinas
- Solid fiberglass construction avoids cored-panel risks
Cons
- Capsize screening value excludes her from ocean racing
- Iron keel invites long-term corrosion vigilance
- Light sail-area-to-displacement ratio limits pace under canvas
