COMING SOON – LOW HOUR MAINSHIP 400 - Virtual tours or in person showings can be scheduled for June 16th, 2026

Do not wait for the full photo package if this vessel fits your search criteria. The last Mainship we represented attracted competing offers in less than two weeks despite having higher engine hours and only one place holder photo for the listing. Opportunities to purchase a Mainship 400 with this level of care, maintenance history, and equipment upgrades are becoming increasingly rare. This is the unicorn you have been looking for!

Text or call for details. Email-only inquiries may not receive a response due to the anticipated level of interest and our travel schedule.

More photos, specifications, and details will be added shortly.

If you’ve been searching for a late-model Mainship 400 with exceptionally low hours, extensive upgrades, and a lifetime of protected freshwater and brackish-water cruising, this may be the opportunity you’ve been waiting for.

This Mainship 400 has just 500 original hours on her Caterpillar diesel engine and approximately 200 hours on the generator, making her one of the lowest-hour examples currently available. Lovingly maintained and thoughtfully upgraded, she represents the ideal blend of classic trawler comfort, efficiency, and modern navigation technology.

Recent improvements and maintenance include:

• Caterpillar engine survey completed with all recommended items addressed
• New aftercooler installed
• New raw water pump assembly installed
• New 16,000 BTU Marinaire salon air conditioning system
• Generator starter and relay replaced
• Comprehensive professional layup completed at the end of 2024, including engine, generator, batteries, shore power, freshwater system, head, bilges, and air conditioning systems
• Both trim tab rams replaced in Spring 2025
• Garmin GPSMAP 943 XSV at upper helm
• Garmin GPSMAP 743 XSV at lower helm
• New transducer installed
• Garmin Reactor 40 Autopilot system installed
• Garmin AIS 800 Blackbox Transceiver installed
• Garmin VHF 215 radio installed
• New compasses installed in 2026
• Two new 8D batteries installed in 2026
• Updated window screens installed throughout

The Mainship 400 has earned a reputation as one of the most practical and sought-after cruising trawlers ever built. With economical diesel performance, spacious accommodations, dual helms, wide side decks, and exceptional visibility, she is equally at home as a Great Loop cruiser, Chesapeake Bay explorer, coastal passagemaker, or liveaboard.

Serious buyers are encouraged to reach out now for advance specifications, additional information, and first-showing opportunities before this vessel is officially launched to the broader market.