Mainship 34 Trawler (2005)

About the Mainship 34 Trawler (2005)

Researched from public sources for this model. Any individual boat may have been modified or repowered — confirm before relying on any figure.

Built

2005–2009

Builder

Mainship

Length

38.83 ft

Beam

14.25 ft

Draft

3.33 ft

Displacement

20,000 lb

Hull / keel

semi-displacement

Propulsion

inboard

Fuel

250 gal

Water

70 gal

Holding

34 gal

Generator

factory option

Bow thruster

factory option

Sources disagree on hp (twin option) — left blank rather than guessed.

Full-keel semi-displacement hull with galley-down single-stateroom layout; lower helm optional. LOA 38.83 ft includes pulpit. Single 240 hp Yanmar cruises about 8 knots (12-13 top); twin 315 hp Yanmars reach 16-18 knots.

Engines fitted

• Yanmar 240 hp (4-cyl) — 240 hp, diesel, single standard
  HMY's guide gives a single 240 hp Yanmar cruising efficiently at 8 kn (12-13 kn top); Power & Motoryacht says power ran from a single 240 hp up. Base engine per both.
  Sources: hmy.com · powerandmotoryacht.com
• Yanmar 240 hp (4-cyl) — 240 hp, diesel, twin factory option
  Canadian Yachting/Canadian Boating tested a 34 Trawler with twin 240 hp Yanmar turbo diesels; P&MY says twin installations to 240 hp were offered.
  Sources: canadianboating.ca · powerandmotoryacht.com
• Yanmar 315 hp — 315 hp, diesel, twin factory option
  HMY: twin 315 hp Yanmars reach 16-18 kn top.
  Sources: hmy.com
• Yanmar 6LYA-STP — 370 hp, diesel, single factory option
  Power & Motoryacht's January 2005 test boat had a single 370 hp Yanmar 6LYA-STP with a ZF gear.
  Sources: powerandmotoryacht.com
• Cummins — diesel, single or twin factory option
  Power & Motoryacht says single and twin installations were offered from both Yanmar and Cummins; the Cummins models and ratings are not named.
  Sources: powerandmotoryacht.com

Boats of the same model can differ — check which engines yours actually has before ordering parts.

Generator

factory option

Power & Motoryacht's January 2005 test lists the 8 kW Kohler under optional equipment; the test boat had it.

• Kohler — 8 kW factory option
  Fuel not stated in the test.
  “8-kW Kohler genset (optional equipment)” — review (2005), powerandmotoryacht.com · “Powered with a Yanmar 370 hp, and a Kohler 8kw genset” — search excerpt (2007), facebook.com

Generators are often replaced or added — check the unit's own plate before ordering parts.

Known problems for this model

• Tight engine room access engine
  The engine room hatch beneath the flybridge stairs is a tight fit, which makes routine service awkward.
  hmy.com

Engines & parts

Other Mainship models

• Mainship 34 Diesel Cruiser (34 Trawler, 1978) 1978–1982
• Mainship 34 Pilot 1998–2008
• Mainship 350 / 390 Trawler ?–2005
• Mainship 400 / 414 Trawler 2003–2012
• Mainship 430 Trawler 1999–2006