Glen L Spirit Cutter

Description

The Glen-L Spirit Cutter, a robust 39-foot steel-hulled cruising cutter variant of the flagship SPIRIT design by Glen L. Witt introduced in the 1970s and offered through Glen-L Marine Designs, represents the zenith of DIY blue water capability for welders envisioning self-sufficient passages from the Mediterranean to the South Pacific, with its multi-chine hull prioritizing simplicity, strength, and long-range endurance over outright speed. Measuring 39 feet LOA (35' LWL) with a 12-foot beam, 5 feet 6 inches draft on an encapsulated full keel (23,000 pounds total displacement, including 8,000 pounds of low-cost concrete/scrap steel ballast for a 35% ratio and comfort ratio ~38), it affords a gentle, seakindly motion in 25–35 knot seas while attaining a hull speed of ~7.8 knots under its masthead cutter rig with 800 square feet of sail (main 334 sq ft, staysail/jib 392 sq ft combined, club-footed self-tending jib for singlehanded ease; SA/D ~14 for balanced, low-heeling progress and versatile storm tactics). The multi-chine mild steel plate construction (5/32"–3/16" plating over 25 frames, fully welded with integral fuel (300 gallons), water (200 gallons), and waste tanks plus watertight bulkheads for collision safety) demands 2,000–3,000 hours for a proficient builder using Glen-L's precise offsets and patterns, resulting in a virtually unbreakable shell primed with epoxy for corrosion resistance; the interior spans 6'4" headroom across a private forward stateroom (double V-berth, hanging locker, convertible seat, and en-suite head), expansive saloon with U-galley (gimbaled stove, double sinks, fridge), dedicated nav station, convertible dinette/settees for six, and aft quarter berth with second head—provisioned for months at sea. Auxiliary power via a 50–70 hp diesel inboard (e.g., Perkins 4-154 or Yanmar 4JH) ensures 7.5-knot motoring; with ~15–25 SPIRIT hulls completed worldwide (cutter rigs comprising about half, including notable Atlantic circuits).

Construction Details

Designer Glen L Marine
Length 39.167 ft
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The standard boat dimensions

i 49 ft
j 17.50 ft
p 44.50 ft
e 16.25 ft
p2 -
e2 -
i2 -
j2 -

Sails

Glen L Spirit Cutter - MAINSAIL

Luff * 44.5 ft - (13564 mm)
Foot * 16.25 ft - (4953 mm)
Leech * 46.56 ft - (14191 mm)
Tack Angle * 88 °
Diagonal * 46.84 ft - (14277 mm)
Head (inches) * 6 in - (152 mm)
Area * 371.01 ft²
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Glen L Spirit Cutter - JIBSAIL

Luff * 41.62 ft - (12686 mm)
Foot * 23.64 ft - (7205 mm)
Leech * 35.47 ft - (10811 mm)
Percentage LP * 114.97 %
Length Perpendicular * 20.12 ft - (6133 mm)
Deck Angle * 12.01 °
Area * 418.72 ft²
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Glen L Spirit Cutter - GENOA

Luff * 49.43 ft - (15066 mm)
Foot * 28.66 ft - (8736 mm)
Leech * 46.12 ft - (14057 mm)
Percentage LP * 150 %
Length Perpendicular * 26.25 ft - (8001 mm)
Deck Angle * 4.02 °
Area * 648.72 ft²
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Glen L Spirit Cutter - ASYMMETRICAL

Luff * 49.43 ft - (15066 mm)
Foot * 28.88 ft - (8803 mm)
Leech * 45.48 ft - (13862 mm)
Perc LP * 165 %
Area * 1071 ft²
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Disclaimer. Boats are not all the same -- even when produced in the same factory of the same model. Sailrite does its best to publish accurate dimensions, but we often find it worthwhile to have our customers measure their boats carefully before we produce kits for them. You should take the same precautions, especially when the data is not from Sailrite. The information on this site is not guaranteed to be accurate. Sailrite offers this content as a service to our community, but takes no responsibility for the reliability of the data provided.

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