Naja 30 Sailboat Review, Specs, and Listings

Sylvestre Langevin·1976·A & T Marine Services/Whisstock's Boatyard
Approximate drawing

Hover a measurement to read its value

Hull Type
Monohull · fin
Rig
Masthead Sloop
LOA
30' · 9.14 m
Disp.
7,200 lbs · 3,266 kg
First year
1976

The Naja 30 is a 30foot masthead sloop drawn by French maritime architect Sylvestre Langevin in the mid seventies and built by the American yard A & T Marine Services, with production recorded as starting in 1976. She is an aluminumhulled monohull with a fin keel and transomhung rudder, a configuration that places her firmly in the moderateperformance cruiserracer camp rather than the heavydisplacement cruising tradition.

Measurements

Dimensions 01

Length Overall
30 ft
Length on deck
Waterline Length
25.4 ft
Beam
10.33 ft
Draft
5.8 ft
Maximum Headroom
Air Draft

Construction & hull 02

Construction
Aluminum
Hull Type
Monohull
Keel Type
Fin
Rudder
1× Transom-Hung
Ballast
(Lead)
Displacement
7,200 lbs
Water Capacity
Fuel Capacity

Rig & sails 03

Rigging Type
Masthead Sloop
Mainsail luff
30.8 ft
Mainsail foot
9.5 ft
Foretriangle height
35.8 ft
Foretriangle base
12 ft
Forestay Length (estimated)
37.76 ft
Sail Area
361 sqft

Calculations 04

Sail Area to Displacement Ratio
15.49
Ballast to Displacement Ratio
Displacement to Length Ratio
196.15
Comfort Ratio
18.53
Capsize Screening Ratio
2.14
Hull Speed
6.75 kn

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

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