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2005 Mainship 400 Trawler Boat in Solomons, MD 20688 US

$225,000

Used
builtBuilt in 2005
Year the boat was built
model

400 Trawler

Boat model
engine

1 Engine (Caterpillar)

Engine type and count
length

40 feet

Overall boat length
fuel

Diesel

Fuel type
material

Fiberglass/Reinforced

Hull material

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.



Nominal Length
40ft
Length Overall
40ft
Beam
14.17ft
Cabins
2
Fresh Water Tanks
130gal
Fuel Tanks
300gal
Holding Tanks
43gal
Hull Material
fiberglass
Hull Shape
displacement
Engine 1
Engine Make
Caterpillar
Total Power
385hp
Engine Hours
500
Engine Type
inboard
Fuel Type
diesel
Engine Year
2005
Drive Type
direct
Cockpit Shower
✓
Electric Winch
✓
Davits
✓
Cockpit Cushions
✓
Cockpit Table
✓
Swimming Ladder
✓
Stern Thruster
✓
Bow Thruster
✓
Electric Bilge Pump
✓
Oven
✓
Microwave Oven
✓
Marine Head
✓
Air Conditioning
✓
Electric Head
✓
Hot Water
✓
Refrigerator
✓
Deep Freezer
✓
Battery Charger
✓
Depthsounder
✓
Radar
✓
Log Speedometer
✓
Repeater
✓
Tv Set
✓
Navigation Center
✓
Plotter
✓
Autopilot
✓
Radio
✓
Compass
✓
Cd Player
✓
Gps
✓
Cockpit Speakers
✓
Flat Screen Tv
✓
Ais
✓
Bimini Top
✓
Shore Power Inlet
✓
Generator
✓
Disclaimer

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.

Price History

DateEventPrice
6/12/26Initial price$225,000

Contact Calm Seas Yachting

290 174th St, Unit 1910, Sunny Isles, FL, 33160

By checking this box, I consent to receive recurring marketing text messages, phone calls, and emails from Calm Seas Yachtingat the number and email provided, including messages sent using an autodialer or prerecorded voice. Message frequency varies. Message and data rates may apply. Reply STOP to opt out or HELP for assistance. Consent is not a condition of purchase. We'll also send helpful email updates about your boat search. You can unsubscribe whenever you like. See Terms of Use and Privacy Policy.

Finance your dream boat!

Use our boat payment calculator to estimate monthly payments for 2005 Mainship 400 Trawler. Enter your down payment, choose a loan term, and adjust the interest rate to see an instant payment estimate — ideal if you're calculating boat payments before you enquire. Wondering how much does a Trawler cost in today's market, or how much does a Mainship cost for similar models? This boat financing calculator helps you compare scenarios in seconds, whether you're considering used boat financing or a new purchase.
$
$
510152025
%
Principal Loan Amount$ 191,250
Total Payment$341,947.90
Monthly payment
$1,424.78/mo

Finance your dream boat!

Use our boat payment calculator to estimate monthly payments for 2005 Mainship 400 Trawler. Enter your down payment, choose a loan term, and adjust the interest rate to see an instant payment estimate — ideal if you're calculating boat payments before you enquire. Wondering how much does a Trawler cost in today's market, or how much does a Mainship cost for similar models? This boat financing calculator helps you compare scenarios in seconds, whether you're considering used boat financing or a new purchase.
$
$
510152025
%
Principal Loan Amount$ 191,250
Total Payment$341,947.90
Monthly payment
$1,424.78/mo

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Meet the Broker

Address

290 174th St
Unit 1910
Sunny Isles, FL 33160

Boat Location

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Contact Calm Seas Yachting about 2005 Mainship 400 Trawler

290 174th St, Unit 1910, Sunny Isles, FL, 33160

By checking this box, I consent to receive recurring marketing text messages, phone calls, and emails from Calm Seas Yachtingat the number and email provided, including messages sent using an autodialer or prerecorded voice. Message frequency varies. Message and data rates may apply. Reply STOP to opt out or HELP for assistance. Consent is not a condition of purchase. We'll also send helpful email updates about your boat search. You can unsubscribe whenever you like. See Terms of Use and Privacy Policy.

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