boatbuildlog

Design

Koulmig 23

Designed by François Vivier

Koulmig 23 is a 6.98 m pilothouse power cruiser with a 2.50 m beam, designed for both professional and home builders. She sleeps two or three, with a galley area and a toilet in the fore cabin, and comes in two versions: one with a spacious cockpit and one with a longer wheelhouse and a separate toilet and shower room.

The semi-planing hull is meant for 12 to 15 knots with a 30 to 60 hp outboard. She is built in epoxy plywood, with a large developable bottom panel and sides of cold-molded plywood over stringers, 12 mm thick and sheathed outside. She needs a CNC-cut plywood kit or full-size patterns, and the designer notes that the plan is available in French only.

What building a Koulmig 23 actually takes

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Same type, closest in length.

Design Plans from LOA Logs
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Novi 23 Bateau 22′ 10″ (6.96 m) 0
V-Dory Glen-L Marine 22′ 10″ (6.96 m) 0
23 ft Utility Boat Benford Design Group 23′ 0″ (7.01 m) 0