Design and Construction
The hull is hand-laid solid fiberglass renowned for its tank-like thickness, a construction approach that gives the 33 a reputation for robust build quality. Early examples, often called the MkI and built before 1977, carried a traditional long keel with very shallow draft, while post-1977 MkII boats transitioned to a deeper fin keel and skeg-hung rudder to improve tracking and maneuverability. The early wooden wheelhouse was beautiful but demanding to maintain; later models adopted a GRP wheelhouse that significantly improved durability. Chainplates are robustly bonded into the hull structure, and the wheelhouse windows sit in heavy frames. With a displacement of 17,250 pounds and 5,150 pounds of ballast, the boat's stability comes as much from hull form and low-down engine and tank weight as from the lead.
Rig and Handling
The definitive rig is a masthead ketch, with a total sail area of 475 square feet spread across a 197-square-foot main and 85-square-foot mizzen. A handful of sloop-rigged versions exist, but the ketch remains the choice for balancing the sail plan in heavy weather, letting a crew drop the mainsail and run under headsail and mizzen as the wind builds. The sail-area-to-displacement ratio of 11.4 puts her firmly in motorsailer territory: under-canvased for light winds, she will almost certainly have the engine ticking over to maintain steerage. She does not point high, with a tacking angle closer to 100 degrees or more. Once on a broad reach in 15 knots or better, though, the hull settles into a comfortable groove and often holds 6 to 7 knots. The hydraulic helm lacks cable feedback but is easy from the warm wheelhouse, and the dual-station steering lets you shift between inside and out. High windage from the wheelhouse makes a crosswind marina a handful without a bow thruster.
Accommodations
Inside, the Nauticat 33 feels far larger than her 33-foot length suggests, with nearly 6 feet 7 inches of headroom in the wheelhouse and 6 feet 3 inches below. The wheelhouse itself is the social hub, built around a large U-shaped settee and a panoramic view, and its internal helm means you can navigate a gale dry in a t-shirt. The aft cabin is a private retreat with a double berth or twin singles in some layouts and often its own vanity or head. A U-shaped galley is secure for cooking at sea, the dinette opposite converts to a double, and the forecabin holds a traditional V-berth for guests or storage. While she can sleep six, the storage and plumbing suit a cruising couple with occasional visitors.
Known Issues
On older boats, window seals perish and leaks become a priority; wooden-top models need scrutiny for rot in window frames and cabin sides, while GRP versions should be checked for crazing or failed seals. Many hulls were built with laid teak decks, and if original those may be near the end of their life, a significant expense to address. Blistering appears on some hulls, particularly those that spent lives in warmer waters. The hydraulic steering needs inspection for line leaks and a seamless inner-to-outer helm transition. The large wheelhouse windows are a potential vulnerability in extreme breaking-wave conditions, though they have stood the test of time for decades, and testers note they should be reinforced for serious offshore work.
Refits and Ownership
The most consequential owner upgrade is the bow thruster, widely retrofitted to take the stress out of close-quarters maneuvering against the boat's windage. MkII boats are generally preferred for their GRP wheelhouse and improved keel and rudder handling over the very shallow MkI. Engines are typically Ford Lehman or Perkins diesels in the 80 to 90 horsepower range, and generous fuel and water tankage, often exceeding 300 litres (66 gallons) and 450 litres (99 gallons) respectively, underpins the excellent range under power that defines the type.
The Verdict
The Nauticat 33 is a masterclass in compromise, trading windward sharpness and sleek looks for an unmatched level of comfort, safety, and volume in a 33-footer. Her heavy-displacement hull and exceptional motion-comfort ratio make her one of the steadiest platforms in her size bracket, and the protected wheelhouse extends livability into cold and rough conditions. She is a slow, pragmatic passage-maker rather than a racer, but her capsize screening value and documented ocean crossings confirm real seaworthiness.
Pros
- Massive interior volume and protected dual-station wheelhouse
- Tank-like solid-GRP hull with robustly bonded chainplates
- Exceptional motion comfort and high resistance to capsize
- Strong range under power with generous tankage
Cons
- Limited windage-plagued windward performance and marina handling
- Wooden wheelhouses and teak decks demand upkeep or replacement
- Hydraulic helm lacks tactical feel; window leaks need vigilance







