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Mainship boat models
B-Atlas currently covers 8 Mainship models spanning 33.08 ft to 41.33 ft. This page organizes the models in the current database; it does not imply a complete factory production catalogue.
Models covered by B-Atlas
1998–2008 · 33.08 ft · beam 10.25 ft
The Mainship 30 Pilot is a compact Downeast-style express cruiser with a semi-displacement hull, a large cockpit and one-cabin accommodation below. Most examples use a single…
1978–1982 · 34 ft · beam 11.92 ft
The original Mainship 34 is a single-diesel flybridge cruiser built on a solid-fiberglass semi-displacement hull with a full-length keel, wide side decks and a single forward…
1979–1982 · 34 ft · beam 11.92 ft
The Mainship 34 II is a revised version of the original 34-foot single-diesel flybridge cruiser. It retains the same basic semi-displacement dimensions and economical shaft-drive…
1978–1982 · 34 ft · beam 11.92 ft
The Mainship 34 III is the 1983–88 third generation of the original Mainship 34 concept. It keeps the single-diesel, long-keel semi-displacement hull philosophy but uses a more…
1978–1982 · 34 ft · beam 11.92 ft
The Mainship 34 III is the 1983–88 third generation of the original Mainship 34 concept. It keeps the single-diesel, long-keel semi-displacement hull philosophy but uses a more…
1996–1999 · 39.75 ft · beam 14.17 ft
The Mainship 350 Trawler is a flybridge cruiser with a modified-V semi-displacement hull, broad 14-foot beam, two-cabin accommodation and single or twin diesel shaft propulsion.…
1999–2005 · 39.75 ft · beam 14.17 ft
The Mainship 390 Trawler is a flybridge cruiser with a modified-V semi-displacement hull, broad 14-foot beam, two-cabin accommodation and single or twin diesel shaft propulsion.…
2003–2012 · 41.33 ft · beam 14.17 ft
The Mainship 400 Trawler is a broad-beam flybridge cruiser with two cabins, molded bridge stairs and primarily single-diesel shaft propulsion. Its semi-displacement hull, large…
How to use this page
Open a model guide to compare dimensions, hull behaviour, propulsion, trade-offs and inspection focus. B-Atlas preserves uncertainty: a missing value is not treated as evidence that a boat fails a requirement.