Design and Construction
Aarnipalo gave the Nauticat 36 a slightly speedy hull for her type. Her length-to-beam ratio of 3.29 makes her slimmer than 58 percent of comparable sailboat designs.
The hull is hand-laid fiberglass, which requires only minimal maintenance during the sailing season. Beneath it is a fixed iron keel in a long-keel configuration. Compared with a similarly sized fin-keeler, the long keel provides better directional stability and helps the boat hold a steady track offshore. The trade-off is greater difficulty when maneuvering in a tight, space-starved harbor.
Wetted surface is about 376 square feet, while immersion is roughly 1,163 pounds per inch. Together with a DL-ratio of 268, those figures place the Nauticat 36 firmly in the moderate-displacement camp.
Rig, Handling, and Performance
The ketch rig carries a mizzen mast aft of the helm, and owners soon learn the balancing act required by a two-masted sail plan. One Northwest owner reported rounding up with excessive weather helm after reefing the headsail but leaving the mizzen fully dressed as the breeze freshened. It was a sharp reminder that the aft sail demands the same attention as the forward one during sail reduction.
The Nauticat 36 sails well enough to surprise non-racers. She can carry full sail in more than 20 knots before the breeze prompts the crew to drop the main. Under power, a shaft-drive, 80-horsepower Ford diesel drives her at 8.5 knots. The shaft arrangement also promises less long-term maintenance than a sail drive.
The published ratios further challenge the lazy motor-sailer stereotype. Her capsize screening value is 1.66, which, by that formula alone, would admit her to ocean racing. A Motion Comfort Ratio of 35.1 makes her more comfortable than 88 percent of similar designs.
Her 38 percent ballast ratio is higher than that of 38 percent of her peers, but it indicates a below-average ability to resist heeling. The theoretical displacement-hull speed is 7.4 knots, while the reported 8.5-knot engine speed undercuts that figure and helps define the motor-sailer compromise.
Accommodations
The pilothouse is the heart of the boat: a warm, weatherproof command post valued by owners in cold, wet climates for winter cruising and foul-weather passages. Windshield wipers on the pilothouse front reinforce the enclosed-helm philosophy.
As was typical of the era, the interior is finished in teak. The wood is naturally oily and water-repellent, and one owner admired the near-perfect European joinery and the beauty of the wooden cabins. With 7–8 berths, a galley, and a toilet facility, the boat can accommodate long periods aboard without strain. The same owner described her as cozy and stable at rest.
Teak also appears outside, including a wooden-capped life rail framing the deck edge.
Refits and Cruising Gear
Owners have modernized the Nauticat 36 along predictable lines. A ProFurl 320 furler makes sail handling much easier and is a common upgrade path. A teak swim platform, an aft arch with davits, and additional solar panels are among the comfort and power additions found on well-kept examples.
One arrangement uses a forward rack outside the life rail to carry standup paddleboards. It accommodates contemporary cruising gear, though it leaves the boards exposed to a pounding that the wooden rail need not suffer.
The Verdict
The Nauticat 36 is a thoughtfully drawn pilothouse ketch with more seakindly composure and directional steadiness than her motor-sailer label might imply. Her low-maintenance fiberglass hull and teak-lined interior suit long stays aboard, particularly in cold weather.
The long keel trades close-quarters agility for steady offshore tracking, while the ketch rig rewards attentive sail trim rather than neglect.
Pros
- Enclosed pilothouse, teak interior, and windshield wipers provide foul-weather comfort
- Long iron keel gives better directional stability than comparable fin keels
- Motion Comfort Ratio exceeds that of 88 percent of similar designs
- Hand-laid fiberglass hull needs minimal maintenance during the sailing season
- Shaft-drive diesel promises less long-term maintenance than a sail drive
Cons
- Long keel makes close-quarters harbor handling more difficult
- The 38 percent ballast ratio indicates below-average resistance to heeling
- An unreefed mizzen can overpower the sail plan and induce weather helm
