Marsh Wren 20 by Devlin: specs and plans

Marsh Wren 20

A 20 ft 2 in (length on deck) gaff sloop by Sam Devlin, built stitch and glue. It was drawn for a Nancy's China owner who wanted a bigger boat he could sail alone, and comes as an open daysailer or with a cabin. Beam is 7 ft 5 in, the fixed keel draws 34 in, displacement is 2,050 lb with 700 lb of ballast, and sail area is 244 sq ft. Auxiliary power is a 10 hp diesel saildrive or a 6 hp outboard.

Study and construction plans are sold. A ballasted keelboat with a gaff rig is best taken on with some experience. As a rule of thumb, budget 900 to 1,600 hours. The medians below come from builders who logged this boat here.

What building a Marsh Wren 20 actually takes

Medians from the build logs kept on this site, not the designer’s estimate. Nobody has logged this boat here yet, so they are empty until the first builder does.

Build logs

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Median hours

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Median months

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Builds of this boat

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Boats like this one

Same type, closest in length.

Design	Plans from	LOA
Saltaspiaggia	Modern Wooden Boat	6.1 m (20′ 0″)
20 ft Gaff Sloop Ragnar or Marconi Sloop	Benford Design Group	20′ 0″ (6.1 m)
Core Sound 20	B&B Yacht Designs	20′ 0″ (6.1 m)
Core Sound 20 Mark 3	B&B Yacht Designs	20′ 0″ (6.1 m)
Haiku 700	Modern Wooden Boat	6.2 m (20′ 4″)
Idea 19	Modern Wooden Boat	6 m (19′ 8″)