Nauticat 33 Sailboat Review, Specs, and Listings

W. Aarnipalo·1967 – 1996·~1,160 hulls·Nauticat - Siltala Yachts
Nauticat 33 drawingBuilder drawing
Hull Type
Monohull · long
Rig
Ketch
LOA
33.17' · 10.11 m
Disp.
17,250 lbs · 7,824 kg
First year
1967

The Nauticat 33 is a Finnishbuilt motorsailer for sailors who value yearround comfort and interior volume more than outright sailing speed. Designed by W. Aarnipalo and produced by Siltala Yachts from 1967 through 1996, it became the boat that defined the builder’s brand, with more than 1,160 launched. Its design draws on traditional Nordic fishing boats, with a heavydisplacement hull, high freeboard, and a canoe stern that closely resemble those working craft.

Measurements

Dimensions 01

Length Overall
33.17 ft
Length on deck
—
Waterline Length
28.17 ft
Beam
10.67 ft
Draft
5.08 ft
Maximum Headroom
—
Air Draft
—

Construction & hull 02

Construction
Fiberglass
Hull Type
Monohull
Keel Type
Long
Rudder
1× Attached
Ballast
5,150 lbs (Lead)
Displacement
17,250 lbs
Water Capacity
105.67 gal
Fuel Capacity
132.09 gal

Rig & sails 03

Rigging Type
Ketch
Mainsail luff
35.1 ft
Mainsail foot
11.2 ft
Foretriangle height
40.7 ft
Foretriangle base
13.7 ft
Forestay Length (estimated)
42.94 ft
Sail Area
475 sqft

Calculations 04

Sail Area to Displacement Ratio
11.38
Ballast to Displacement Ratio
29.86
Displacement to Length Ratio
344.49
Comfort Ratio
38.38
Capsize Screening Ratio
1.65
Hull Speed
7.11 kn

Design and Construction

The hull is hand-laid solid fiberglass, with the substantial thickness that has earned the Nauticat 33 a reputation for tank-like construction and robust build quality. Chainplates are firmly bonded into the hull structure, and the wheelhouse windows are set in heavy frames.

Early boats, often called MkI models and built before 1977, have a traditional long keel and very shallow draft. After 1977, MkII boats moved to a deeper fin keel and skeg-hung rudder to improve tracking and maneuverability. Early examples also had handsome wooden wheelhouses, though these require considerable maintenance. Later models adopted a more durable GRP wheelhouse.

The boat displaces 17,250 pounds and carries 5,150 pounds of ballast. Its stability comes not only from the lead, but also from the hull form and the low placement of the engine and tank weight.

Rig, Sailing Performance, and Handling

The defining rig is a masthead ketch, carrying 475 square feet of sail: a 197-square-foot mainsail and an 85-square-foot mizzen, with the remainder in the headsail. A handful of sloop-rigged versions also exist.

The ketch rig makes it easier to balance the sail plan in heavy weather. As the wind builds, the crew can drop the mainsail and continue under headsail and mizzen. Even so, a sail-area-to-displacement ratio of 11.4 places the Nauticat firmly in motorsailer territory. She is under-canvased in light winds and will almost certainly need the engine ticking over to maintain steerage.

Windward performance is limited. She doesn’t point high, and her tacking angle is closer to 100 degrees or more. On a broad reach in at least 15 knots, however, the hull settles into a comfortable groove and often holds 6 to 7 knots.

The hydraulic helm lacks the feedback of a cable system, but steering from the warm wheelhouse is easy, and the dual-station steering lets the helmsperson move between the inside and outside stations. The wheelhouse creates considerable windage, making close-quarters maneuvering in a crosswind a handful without a bow thruster.

Accommodations

Below, the Nauticat 33 feels much larger than its 33-foot length suggests. Headroom is nearly 6 feet 7 inches in the wheelhouse and 6 feet 3 inches below.

The wheelhouse is the social center of the boat, with a large U-shaped settee and panoramic views. Its internal helm also allows the crew to navigate in rough weather while staying warm and dry. Aft, the private cabin has either a double berth or, in some layouts, twin singles, often accompanied by its own vanity or head.

The U-shaped galley provides a secure working area for cooking at sea. Opposite, the dinette converts into a double berth, while the forecabin has a traditional V-berth for guests or storage. Although the boat can sleep six, its storage and plumbing are better suited to a cruising couple with occasional visitors.

Engines, Tankage, and Useful Upgrades

Nauticat 33s typically have Ford Lehman or Perkins diesel engines in the 80 to 90 horsepower range. Fuel capacity often exceeds 300 litres (66 gallons), while water capacity often exceeds 450 litres (99 gallons). This generous tankage supports the excellent range under power that helps define the type.

A bow thruster is the most consequential owner upgrade and has been widely retrofitted. It takes much of the stress out of close-quarters maneuvering, where the boat’s high windage can otherwise be difficult to manage.

MkII boats are generally preferred for their GRP wheelhouses and the improved handling provided by their keel and rudder arrangement, compared with the very shallow MkI design.

Known Issues

Window seals can perish on older boats, making leaks a priority. Wooden-wheelhouse models need careful scrutiny for rot in the window frames and cabin sides. On GRP versions, check for crazing and failed seals.

Many boats were built with laid teak decks. If still original, these decks may be approaching the end of their service life and can represent a significant expense. Blistering also appears on some hulls, particularly those that have spent their lives in warmer waters.

The hydraulic steering needs inspection for leaking lines and a seamless transition between the inner and outer helms. The large wheelhouse windows may be vulnerable in extreme breaking-wave conditions. Although they have stood the test of time for decades, testers note that they should be reinforced for serious offshore work.

The Verdict

The Nauticat 33 is a study in compromise. It gives up windward sharpness and sleek looks in exchange for an unusual degree of comfort, safety, and interior volume in a 33-footer. Its heavy-displacement hull and exceptional motion-comfort ratio make it one of the steadiest platforms in its size bracket, while the protected wheelhouse extends the cruising season into cold and rough conditions.

This is a slow, pragmatic passage-maker rather than a racer. Its capsize screening value and documented ocean crossings nevertheless confirm real seaworthiness.

Pros

  • Extensive interior volume and a 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, supported by generous tankage

Cons

  • Limited windward performance, with windage complicating marina handling
  • Wooden wheelhouses and teak decks require substantial upkeep or replacement
  • Hydraulic helm lacks tactical feel
  • Window leaks require vigilance

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