Design and Construction
The Maxi 100 is a monohull with a 34-foot-5-inch overall length, a 25-foot-6-inch waterline, and a 10-foot-6-inch beam. Her length-to-beam ratio of 2.91 keeps her lean without making her narrow.
Both hull and deck are fiberglass. The hull is solid laminate, while the deck uses a sandwich layup intended to moderate the cabin climate. Her iron fin keel carries 3,527 pounds of ballast, giving her a ballast-to-displacement ratio of 36 percent. Draft varies from roughly 5 feet 1 inch to 5 feet 4 inches depending on load, which lets her into most marinas.
Her displacement-length ratio is about 270, placing her among moderate racers rather than heavy cruisers or featherweight sprint boats. The capsize screening value is 1.90. Wetted surface is about 301 square feet, while an immersion rate of 945 pounds per inch indicates how steadily she carries crew and stores.
Rig, Performance, and Handling
The Maxi 100 carries a masthead sloop rig with 387 square feet of sail. Her sail-area-to-displacement ratio is 12.2 using the ISO reference sail and rises to 14.4 with a 135 percent genoa.
Combined with the displacement-length ratio of 270, those figures support a theoretical hull speed of nearly 6.8 knots and a Relative Speed Performance index of 18. Her Motion Comfort Ratio falls between 22.5 and 26.8, suggesting a tolerable motion profile for a boat of her weight without claiming that she’s soft-riding.
A skeg-hung rudder and fin keel provide the directional control expected of the type. Overall, the numbers describe a boat intended to make progress under sail in club-racing and weekend-cruising conditions, not one designed to win offshore line honors.
Accommodations
Below, the Maxi 100 has six or seven berths, a galley, and a toilet. The teak interior reflects the standard Scandinavian joinery of the period.
That berth count puts her firmly in family-cruiser territory for a 34-footer, while the galley and head make her self-sufficient for coastal passages. The sandwich deck’s insulation also benefits the cabin climate, representing a step up in livability compared with a solid, single-skin overhead. Water capacity is a modest 26 gallons, however, which limits extended independence.
Verdict
The Maxi 100 is a modest-production Petterson cruiser-racer that sits comfortably in the moderate-displacement range. She combines a solid fiberglass hull with a practical sandwich deck, an iron fin keel, and a useful coastal-cruising interior.
Her numbers point to a balanced coastal boat: enough ballast and sail for genuine sailing ability, six or seven berths plus a galley and head for cruising, and a draft that keeps most marinas accessible. She isn’t a voluminous modern cruiser or a dedicated racing boat, but a coherent early-1980s design from a prolific Swedish designer.
Pros
- Finite, identifiable production run of fewer than 200 boats
- Sandwich deck improves cabin climate compared with solid laminate
- Six or seven berths, plus a galley and head, suit coastal cruising
- Moderate-racer displacement-length ratio and a 14.4 sail-area-to-displacement ratio with the genoa indicate real sailing ability
Cons
- Iron rather than lead keel, with the corrosion exposure that implies
- Modest 26-gallon water capacity limits extended independence
- Small production run means fewer spares and comparable boats on the market
