Design and Construction
The Naja 30's hull is made of aluminium, a material choice that sets her apart from the fiberglass norm of her era and demands different maintenance logic from a wood or glass boat. Her hull carries chines, which can provide increased initial stability, a useful trait for a 30-footer meant to feel steady on the wind. The lead ballast and solid core construction listed in the builder record pair with a beam of 10.33 feet and a length-to-beam ratio of 2.90, giving her a relatively broad plan for a 30-foot design without tipping into extremes. At 7,200 pounds displacement with a 25.4-foot waterline, she is light enough to be lively yet substantial enough to carry her rig with composure.
Rig and Handling
The boat is built with a masthead rig carrying a reference sail area of 361 square feet, which yields a sail-area-to-displacement ratio of 15.5 on the ISO 8666 reference sail and 18.7 with a 135% genoa. Those numbers place her in the responsive end of the cruiser spectrum without being a pure racer. Her fin keel draws about 5.81 to 6.11 feet depending on load, which keeps her within the draft limits of most marinas while preserving a useful foil for windward work. The displacement-length ratio of 196 categorizes this boat among moderate racers, and the capsize screening value of 2.14 indicates that this boat would not be accepted to participate in ocean races. Her theoretical maximal speed as a displacement hull of this length is 6.8 knots, and the Motion Comfort Ratio of 18.4 describes a ride that is firmer than a heavy cruiser but not punishing. The immersion rate of about 914 pounds per inch speaks to how load-sensitive her trim is for a boat this size.
Accommodations and Deck Layout
The Naja 30 has a 30-foot loa, 10.33-foot beam, and aluminum deck and hull. The wetted surface of about 312 square feet defines the antifouling and survey area an owner must maintain, and the transom-hung rudder is a simple, accessible appendage type that suits owner upkeep.
Known Issues
The chined aluminum hull invites scrutiny for corrosion at fittings and at the transom rudder post, but no specific failure is named in the available material.
Refits and Ownership
Period equipment data lists standing and running rigging dimensions rather than upgrade histories. The mainsail, jib, genoa, and spinnaker halyards all run 24.8 meters with 10 mm diameter; sheets for jib and genoa are 9.1 meters at 12 mm, mainsheet 22.9 meters at 12 mm, spinnaker sheet 20.1 meters at 12 mm. Cunningham, kicking strap, and clew outhaul are 10 mm at 2.9, 5.8, and 5.8 meters respectively. These figures guide a re-rig but say nothing about prior owner work.
The Verdict
The Naja 30 is a distinctive aluminum cruiser-racer from the mid-seventies, designed by a French architect and built in America. Her chined hull, moderate-racer rating, and accessible transom rudder make her a straightforward owner's boat for those comfortable with aluminum care. She is not an offshore racer by the capsize screen, but she is a quick, roomy 30-footer for coastal and club sailing.
Pros
- Aluminium hull with chines for initial stability
- Masthead rig with genoa option lifting SA/D to 18.7
- Transom-hung rudder simplifies owner maintenance
- Marina-friendly draft of 5.8 to 6.1 feet
Cons
- Capsize screening value of 2.14 excludes ocean racing
- No interior or tankage data from authority
- Aluminium demands disciplined corrosion vigilance






