2001 Mainship 390 Trawler
|Morehead City, NC
$139,000
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2001 Mainship 390 – Lil Unsteady
Well-Kept • Extensively Updated • Turn-Key Cruiser
Lil Unsteady is a standout example of the popular Mainship 390—a classic trawler-style cruiser known for efficiency, generous living space, and easy handling. Powered by a single Cummins 6BTA 330 with 4,672 hours, this boat has been regularly exercised, thoughtfully upgraded, and meticulously maintained by knowledgeable owners. The depth and detail of the maintenance history set this vessel apart.
Highlights
Cummins 6BTA 330 (Single Diesel 4600 hours) – Economical, Simple, and Well-Supported
Extensive service records and continual system upgrades
Simrad electronics suite
Excellent canvas & enclosure
AB 10’ Tender w/ Yamaha 15HP electric-start & davit
Recent shaft, coupling, cutlass bearing, and prop work (2025)
Upgraded inverter & electrical system
Major VacuFlush and plumbing renewals
Swim platform structurally rebuilt and resealed
Standard Mainship 390 Features
Spacious two-stateroom, one-head layout
Large salon with excellent natural light
Galley-up design with full appliances
Wide side decks and safe walk-around design
Upper and lower helms
Flybridge seating with full enclosure
Notable Upgrades and Maintenance,
Electronics replacement (2021)
- Simrad system including:
(2) NSS9 Evo3 MFDs (upper helm)
Simrad Halo20+ Radar (2024)
Autopilot controller, display & direction finder
New transducer
ACR Man-Overboard alarm system (2021)
Secondary depth finder via SonarPhone (2019)
Engine & Transmission
Cummins 1000-hour service completed 3/2025
Heat exchanger serviced (2019)
Aftercooler serviced (2023)
New exhaust elbow (2022)
New OEM Cummins starter (2018)
Engine hoses replaced (12/2024)
Transmission oil change (11/2023)
Damper plate, bell housing & rear main seal replaced (11/2023)
Generator
Professionally serviced by Southeastern Marine (2019)
Fuel pump replaced (2019)
Electrical connections cleaned (2021)
Main breaker replaced (2021)
Generator battery replaced (2021)
Owner-performed full service (2021)
Field rewound (2024)
Generator board replaced
Full service (2024)
Electrical
Victron 12/3000/120 Multiplus inverter with shunt & display (2022)
Promariner charger (2021)
Starter batteries replaced (2021)
House batteries partially renewed (2021)
LED upgrades throughout: nav lights, stern light, deck lights
Underwater lights (white or blue) installed (2025)
New wiper motors & arms (2025)
Plumbing & Sanitation
Extensive VacuFlush system rebuild (2025)
Water heater replaced (9/2024)
Freshwater pump replaced (2023)
Multiple bilge pumps replaced forward, mid, and aft (2021–2025)
Faucets updated throughout, including galley (2025)
Shower sump pump & float replaced
Macerator pump replaced
Canvas & Eisenglass
Flybridge enclosure (2020)
New Bimini & Eisenglass (2020)
Phifertex wrap and panels updated & restitched
Bimini re-waterproofed (2024)
Partial Eisenglass replacement (2025)
Matching green canvas, lines, and fender covers
Air Conditioning
(1) 16,000 BTU Dometic units (stateroom – 2019)
(1) 16,000 BTU Dometic units (salon – 2025)
New bronze piping from sea strainer to pump
Running Gear
Dripless shaft seal (2021)
Shaft, coupler & cutlass bearing replaced (2025)
Propeller inspected & trued (2025)
Stuffing box restuffed (2025)
Interior & Appliances
Refrigerator (2025)
Microwave (2025)
Salon stereo (2025)
Sansui salon TV (2024)
New curtains (2022)
Cabinet faces refinished & latches replaced (2025)
Tender & Deck Gear
AB 10’ Dinghy
Yamaha 15HP electric-start outboard (2018 / installed 2020)
Dinghy inspected & repaired (2022)
Davit system fully serviced (2020)
Mantus anchor swivel & bridle
200’ anchor chain, marked every 25’
Hull, Bottom & Cosmetics
Bottom paint: 2021, 2023, 2025
Regular buff & wax through 2025
Trim tab hinges replaced
Swim Platform – Major Rebuild
A known weak point on Mainships, this swim platform has been professionally rebuilt:
Wet foam removed and replaced
New raised access hatches
New foam core on ends, glassed & gelcoated
Davit resealed with spacers to properly shed water
Summary
Lil Unsteady is not just another Mainship 390—it is a deeply maintained, thoughtfully upgraded cruising trawler with significant recent mechanical, electrical, and structural work already completed. For buyers seeking a dependable, well-documented cruiser that’s ready to go without deferred maintenance, this boat deserves serious consideration.
Disclaimer
We provide this yacht listing in good faith, and although we cannot guarantee its accuracy or the condition of the boat. The South Jersey Yacht Sales - CCM is pleased to assist you in the purchase of this vessel. This boat is centrally listed by Yachts360. She is subject to prior sale, price change, or withdrawal without notice and does not imply a direct representation of a specific yacht for sale.
MANUFACTURER: Mainship
BOAT TYPE: Trawlers
MODEL: 390 Trawler
HULL MATERIAL: Fiberglass
YEAR: 2001
CATEGORY: Power
BEAM: 14.17 ft
LENGTH: 40 / 12.19 m
DRY WEIGHT: N/A
ENGINE 1
MAKE: Cummins
MODEL: 6BTA
FUEL: diesel
POWER: 330 HP
TYPE: Inboard
HOURS: 4672
LOCATION: N/A
DRIVE: N/A
PROPELLER TYPE: N/A
YEAR: 2001
FUEL TANK CAPACITY: N/A
FUEL TANK COUNT: N/A
WATER TANK CAPACITY: N/A
WATER TANK COUNT: N/A
HOLDING TANK CAPACITY: N/A
HOLDING TANK COUNT: N/A
Engine and generator hours are as of the date of the original listing and are a representation of what the listing broker is told by the owner and/or actual reading of the engine hour meters. The broker cannot guarantee the true hours. It is the responsibility of the purchaser and/or his agent to verify engine hours, warranties implied or otherwise and major overhauls as well as all other representations noted on the listing brochure.
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.
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