Yachts New England
250 Hamburg Rd
Lyme, Connecticut, US, 06371
Mainship 34 Mark III - main image

1983 Mainship 34 Mark III

location icon Pocasset, Massachusetts
Year 1983
Length 34 ft

LARK is a great  example of this popular cruiser.  The previous  owners completed the “Great Loop” with her - traveling from June 2018 to June 2019 -  They  made many improvements to the boat during this time - including new battery bank and batteries, new electronics, new inverter, new charging system, new solar charge controller, new v-berth cushions and more.  The current owner has used the boat lightly.  Upgrades include new Teak and Holly sole without and an upgraded solar charging system.  

This Mainship 34-3 one of the most popular small cruisers ever built. She was constructed on a solid fiberglass semi-displacement hull design with a fine bow entry and a full-length keel below. Third of the Mainship series, the appeal of the 34-3 had much to do with her trawler-style profile and affordable price tag, and her greatest attraction remains her superb economy at better than trawler speeds. With a single 165-hp Perkins diesel, the Mainship‘s easily driven hull will cruise at 7 knots burning around 2 gph. The practical single-stateroom floorplan is well suited to the needs of a cruising couple. The galley is large enough for serious food preparation; and a stall shower is included in the head. Outside, the flybridge extends aft to provide weather protection for the cockpit. This low maintenance cruiser mean more time on the water. 


Year Built 1983
Category Power
Length Overall 34 ft
Beam 11'5 ft
Max Draft 3'5 ft
Double Berths 2
Construction Fiberglass
Hull ID MPC34001M83A
Drive Type Direct
Engines 1
Total Engine Power 165 hp
Cruising Speed 7.5 kn
Maximum Speed 10 kn
Fuel Tanks 2
Fuel Tank Cap. 220 gal
Fuel Tank Mat. Aluminum
Water Tanks 3
Water Tank Cap. 110 gal
Holding Tanks 43
Holding Tank Mat. Other
Dry Weight 14,000 lb
Displacement 15,000 lb

Engine 1 Specifications

Make: 1983 Perkins
Model: 63544m
Drive Type: Direct
Fuel: Diesel
Engine Power: 165hp
Type: Inboard
Engine Hours: 3558



  • Lowrance Link 8 VHF DSC & AIS (receive only) 
  • Large Danforth compass
  • Garmin GPS 840 XS
  • Apelco 365 depth unit
  • Raytheon SL-72 Radar System


  •  NMEA 2000 & 0183 Network (GPS, VHF & RADAR)
  • Standard Horizon Intrepid (lower helm with remote at upper)
  • Lowrance 7” GPS / Chartplotter 
  • Hot and cold pressure water system
  • Refrigeration 12v
  • 3 burner propane stove with oven


  • (7) Batteries (4-6 volt) House, 2-12v Eng, 1-12v gen all new 2018
  • Selector switch
  • 30 amp shore power with (2) 50' cords
  • True Charge 40 amp battery charger
  • 3.5kw Generator (Crosspower / Volvo)
  • Xantrex Freedom X 2000 Inverter
  • Sterling Alternator to Battery Smart 4 step charger
  • Belmar Smartgauge Battery Monitor


Additional Equipment
  • Dark Blue Awlgrip 2015
  • Stainless / vinyl rub rail 2015
  • Chain anchor rode (100' chain + 150' nylon rode)
  • Sea water wash-down for anchor and chain / foredeck
  • 170 watt solar system for house battery charging
  • New Renogy Voyager Charge Controller
  • Solar vent in forward hatch + two salon vents
  • Fresh water head flushing with Y-valve for overboard discharge
  • 45 gallon holding tank with inspection port
  • 110 gallons fresh water in 3 tanks (40 gallons standard)
  • Three burner propane stove with oven, 20 lb propane tank w/ remote shut off
  • Propane leak detector in bilge with alarm
  • Carbon monoxide detector with alarm
  • Custom clothes lockers in forward cabin (port & starboard)
  • Laundry hamper in head
  • Custom book and TV cabinet
  • LED lighting in salon, galley and v-berth
  • Custom fuel system consisting of Twin Racor 500 primary fuel filters, Walbro electric fuel pump for filtering priming, port - starboard tank fuel transfer, or back - up to engine mechanical fuel feed pump.  Vacuum gauge on flybridge for fuel filter condition monitoring.
  • Galvanic isolator on AC shore power input
  • Pull out couch in salon
  • (2) Wicker chairs
  • Separate stall shower in head
  • (4) Anchors (Danforth 35) (Rockna Vulcan 15kg) (Delta 22) (Hooker 13)
  • (2) Rule bilge pumps
  • (7) Fenders
  • (6) Docklines
  • (2) Boat hook
  • (3) Fire Ext.
  • First Aid Kit
  • Flares
  • (6) Life Preservers
  • Horseshoe ring
  • Horn / Bell
  • (3) Portable cockpit tables
  • Stereo system
  • Clock / barometer
  • BBQ gas grill
  • 12 volt galley fridge
  • TV - 12v
  • Davis weather station
  • TV antenna
  • Bimini top for bridge
  • Cockpit awning
  • New fuse panel - main cabin and flybridge (2018)
  • Fuses in battery leads
  • NMEA 2000 and 0183 Network
  • New shore power inlet and wiring (2019)
  • New Anchor Windlass Lewmar HX1 (2018)
  • Mount for dinghy motor in cockpit
  • Small wet/dry vacuum
  • Folding radar mast
  • USB charge ports at upper and lower helm
  • New pressure water pump (2019)
The Company offers the details of this vessel in good faith but cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. A buyer should instruct his agents, or his surveyors, to investigate such details as the buyer desires validated. This vessel is offered subject to prior sale, price change, or withdrawal without notice.