1977 Mainship 34 Trawler
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LOCATION: Gananoque, Ontario
This 1977 Mainship 34 stands out as a solidly built cruiser with practical upgrades. Repowered with a Cummins 5.9L diesel, it delivers improved reliability and efficiency over the original configuration. The flybridge boasts fresh upholstery and a full camper canvas enclosure (2021), creating a comfortable helm in all weather.
The layout remains true to its original design — straightforward and functional, with clean lines and a warm, classic interior. Notable onboard features include dual 100-gallon fuel tanks, oversized 30kg Lewmar claw anchor, and a retrofit transom door — all ideal for longer trips, peace of mind at anchor, and stress free docking
Electronics are simple and user-friendly, with a Standard Horizon chartplotter supported by iPad Navionics for redundancy. At the stern, a heavy-duty aluminum swim platform adds lasting durability and utility — perfect for gear handling, boarding, or dockside work.
Overall, this Mainship 34 is a capable cruiser with the right mechanical updates, ready to take on the next chapter with confidence.
Type: | Powerboat |
---|---|
Year: | 1977 |
Make: | Mainship |
Model: | 34 Trawler |
Length: | 34 |
Status: | For Sale |
Price: | $39,900 CAD |
Location: | Gananoque, Ontario |
Date Posted: | 2025-07-21 |
Contact The Broker

Manufacturer Provided Description
Originally marketed as an affordable, fuel-efficient alternative to the larger twin-engine yachts of the 70s, the Mainship 34 quickly built a reputation for its reliability and practicality — over 1,200 hulls were produced, many of which are still cruising today.
This 1977 Mainship 34 stands out as a solidly built cruiser with practical upgrades. Repowered with a Cummins 5.9L diesel, it delivers improved reliability and efficiency over the original configuration. The flybridge boasts fresh upholstery and a full camper canvas enclosure (2021), creating a comfortable helm in all weather.
The layout remains true to its original design — straightforward and functional, with clean lines and a warm, classic interior. Notable onboard features include dual 100-gallon fuel tanks, oversized 30kg Lewmar claw anchor, and a retrofit transom door — all ideal for longer trips, peace of mind at anchor, and stress free docking
Electronics are simple and user-friendly, with a Standard Horizon chartplotter supported by iPad Navionics for redundancy. At the stern, a heavy-duty aluminum swim platform adds lasting durability and utility — perfect for gear handling, boarding, or dockside work.
Overall, this Mainship 34 is a capable cruiser with the right mechanical updates, ready to take on the next chapter with confidence.
Dimensions:
LOA: Approx. 34' (plus aluminum swim platform)
Beam: Approx. 11'11"
Draft: Approx. 2'10"
Bridge Clearance: Approx. 14'
Headroom: 6ft+
Displacement: Approx. 14,000 lbs
Tankage:
Fuel: 2 x 100gal (200 gal total)
Water: 30gal + 25gal (55 gal total)
Holding: 10gal + 30gal (40 gal total)
Propulsion:
Engine
Make: Cummins
Model: 5.9L Diesel
Drive: Shaft
Hours: 2500hrs
Electronics:
- Standard Horizon Chartplotter
- Samsung Tablet with Navionics (integrated navigation redundancy)
- Depthsounder
- Autopilot
- Radar
- VHF Radio
- 12V Panel with breakers
- 30amp Shore Power Connection
- 400W Solar + 50amp Charge Controller
- Battery Bank:
- 280 amp-hour LiFePo4 house battery
- 4 D maintenance free starter battery
- Maintenance free thruster battery
- Windlass (Manual - 40' chain)
Interior:
- Salon, V-berth, galley, and head
- Both salon sofas convert to berths for additional sleeping
- Toilet and shower
- Hot/Cold pressure water
- Galley with stove, fridge, sink
- Classic teak cabinetry
- Large windows for natural light
Notable Features:
- Repowered with Cummins 5.9L diesel engine
- Hurth ZF Transmission
- Bow Thruster
- New flybridge upholstery
- (2021) Full camper canvas enclosure for bridge and aft deck
- Aluminum swim platform (durable and corrosion-resistant)
- Swim ladder
- Retrofit transom door
- 30kg Lewmar Claw Anchor 40' chain 200' Rope
- 15kg Lewmar Claw (Spare)
- Weaver Davit system
- Dinghy and portable Honda generator (negotiable with sale)
Additional Equipment:
- Fire Extinguisher(s)
- Flares
- Trim Tabs
- Fenders
- Lines
- Life Ring
- BBQ
- Dockside water inlet
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.
PLEASE CONTACT RYAN ROOKE - KINGSTON YACHT SALES - 1-833-829-2248 EXT 2005
Listing MLS by Yachtr.com