Brewer Yacht Sales

Brewer Yacht Sales

Brewer Yacht Sales

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  • 2004 Mainship 400 Trawler

    • 40 ft
    • Trawler
    • Noank, CT, US
  • Back


In Stock


Thanks to her meticulous owners she is easily one of the finest Mainships on the market today! "Jamms" is outfitted with loads of extras to make cruising a delight. The single Yanmar with bow thruster makes her economical and reliable. Original owners since new with only 302 original hours. Don't miss this opportunity to own one of the most popular "fast trawlers" on the sound.

  • Manufacturer
  • Model
    400 Trawler
  • Year
  • Category
  • Condition
  • Location
    Noank, CT, US
  • Vessel Name
  • Boat Type
  • Hull Material
  • Hull Type
  • Hull Color
  • HIN:
  • Designer:
  • Flag of Registry
  • Available for sale in U.S. waters
  • Length
    40 ft - 12.19 meter
  • LOA:
    41 ft 4 in - 12.6 meter
  • Beam:
    14 ft 2 in - 4.32 meter
  • Draft - max:
    3 ft 8 in - 1.12 meter
  • Bridge Clearance:
    20 ft - 6.1 meter
  • Dry Weight:
    24000 lbs
  • Make:
  • Model:
  • Engine(s):
  • Hours:
  • Cruise Speed:
    8 MPH
  • Range:
  • Joystick Control:
  • Engine Type:
  • Drive Type:
  • Fuel Type:
  • Horsepower:
    370 (Individual), 370 (combined)
  • Max Speed:
    16 MPH
  • Fuel Tank:
    300 gallons - 1 tank(s)
  • Fresh Water Tank:
    130 gallons - 1 tank(s)
  • Holding Tank:
    47 gallons - 1 tank(s)
  • Total Cabins:
  • Total Berths:
  • Total Sleeps:
  • Total Heads:
  • Captains Cabin:
  • Crew Cabins:
  • Crew Berths:
  • Crew Sleeps:
  • Crew Heads:
Model History

The Mainship 400 Trawler was introduced in 2003 as the successor to the very popular 390 Trawler. Mainship listened closely to the comments the owners of 390's had given them over the years. In the design of the 400, Mainship knew they needed to keep features like the wide decks, large flybridge, roomy cockpit and "no wood" exterior. But they also knew that they needed a larger salon allowing for more galley space and a dinette, which the 390 did not offer. Mechanical access was improved with a larger engine room and much better access to the lazarette, where the generator is located. The hallmark feature of the 400 has to be the summer kitchen at the aft end of the flybridge.


Mainship uses tried and true construction techniques. The boats are made with E-glass fiberglass woven roving and polyester resin. The hull is laid up with a solid fiberglass bottom and the hull sides are cored with balsa above the waterline. The superstructure is solid glass with balsa cored decks. The stringer system is made of marine grade plywood and is completely encapsulated in fiberglass.


Forward master stateroom with centerline queen berth, generous storage with cedar lined lockers, two opening screened portlights, and one opening hatch with sunscreen. Head aft to starboard with Corian vanity, freshwater VacuFlush toilet, shower/tub combo, one opening screened portlight, and one opening hatch with sunscreen. Guest stateroom to port with twin berths which convert to queen. Generous storage with cedar lined locker, one opening portlight, and one opening hatch. Up three steps to full size dinette to port. Lower helm to starboard with full function electronics and captains door to walkway. Galley aft with Corian countertop. Salon to port with sofa.

Teak and holly sole in salon and galley, and carpeted staterooms. The salon is entered from the cockpit through a wonderful aluminum door. The salon has an open and airy feel. There are 10 large windows (many with opening panels and screens) plus the aft glass door allowing for plenty of natural light and fantastic views. Cherry wood is used throughout the boat giving her a warm and rich feeling. In the salon, there is a teak and holly sole with a durable finish. The salon layout has the galley aft to starboard while across on port is the custom made sofa. Forward of the sofa is the built-in dinette while the lower helm is opposite on starboard. The aft doors have drapes for privacy and feature a roll away screen door so you can open up the boat when the weather is right.




The dinette is in the forward port corner of the salon. The center piece is the beautiful hi-gloss cherry table with a polished stainless steel base. An aft facing bench seat and two forward facing wood seats will accommodate four.

  • Cherry Hi-Gloss Table w/SS Base
  • 110v Outlet
  • 12v Lighting
  • Bench Seat
  • (2) Wooden Chairs w/Cushions
  • 12v Courtesy Lights


The L-shaped galley runs along the starboard side of the salon. The galley features Corian counter tops, stove with oven, dual stainless steel sinks, lots of storage cabinets & drawers, an under counter trash bind and a large ac/dc refrigerator with separate freezer on the bottom.

  • Corian countertops
  • Nova-Kool refrigerater/freezer 
  • Seaward 3 burner propane stove with oven
  • Frigidare microwave
  • Black and Decker coffee maker
  • Double stainless steel sink
  • 5 Lockers
  • 4 Drawers
  • Dishes, utensils etc...


Master Stateroom

The master stateroom is in the bow and features a centerline queen berth, two hanging & storage lockers and private access to the head. The berth has two drawers underneath and has a hinged top for additional access to two cherry wood storage bends. The starboard hanging locker is cedar lined and lighted. The port storage locker has a small hanging locker aft and shelves forward. Aft on starboard is a door to the head for private access.

  •  Queen Centerline berth with storage & drawers
  • 4 Lockers
  • Overhead hatches
  • Courtesy lighting
  • Opening ports with screens


Guest Stateroom

The guest stateroom is on port across from the head. Features include two single berths aft with storage beneath, a large cedar lined lighted hanging locker forward and two storage cabinets in the overhead.

  • (2) Single Berths w/ Storage Beneath
  • (1) Bowmar SS Opening Port w/Screen
  • (1) Bowmar SS Overhead Hatch w/Screen
  • 12v Lighting
  • 12v Courtesy Lighting
  • Air Conditioning Vent
  • Cherry Wood Finish
  • Carpeted Sole
  • Lighted Cedar Lined Hanging Locker
  • Storage Shelf Above Locker w/Corian Fiddle
  • (2) Storage Lockers Above Berths


The head is forward of the salon on the starboard side. There is dual access to the head either from the passageway or from the master stateroom. Features include a full fiberglass liner, stall shower with bi-fold door, Corian counters and Vac U Flush head system. The head in generous in size with plenty of elbow room.

  • Fiberglass Liner
  • Vac U Flush Head
  • SS Sink w/Single Lever Faucet
  • Corian Counter
  • Air Conditioning Vent
  • Towel Bars
  • Stall Shower w/Molded-In Seat
  • Bi-Fold Shower Door
  • Shower Sump Pump
  • 12v Lighting
  • 12v Courtesy Lighting
  • Storage Compartment Under Sink
  • Storage Bend In Counter Behind Head
  • Storage Nook Behind Sink
  • (1) Bowmar SS Opening Port w/Screen
  • (1) Bowmar SS Overhead Hatch w/Ocean Air Screen/Shade
  • Water Tank Gauge
  • 110v Outlet
  • Adjustable Mirror w/Cherry Frame In Head

Engine Room / Mechanical

Engine room access is via hinged hatches in the salon sole. The engine room layout has the aluminum fuel tanks outboard of the engines. There is generous space between and around the engines for ease of maintenance. Filters, Batteries, Shaft Seals, transducers ect. are easy to reach and service. Four 12v light fixtures illuminate the area well.

  • Single Yanmar 6LYA-STP (370 HP)
  • Racor Fuel Filters (Engine & Generator)
  • Oil-X-Changing System on engine & generator
  • Sidepower bow thruster
  • Bennet trim tabs - controls at both stations
  • Sea star hydraulic steering
  • Seafire Automatic fire fighting system
  • Three auto / manual bilge pumps with high water alarm
  • Bilge blower
  • Dripless shaft seal
  • Spurs
  • Windshield washers / wipers (3)


Mechanical & Engine Details
  • Marine Air reverse cycle air conditioning with variable speed pump (2 zone)
  • Sidepower bow thruster
  • Bennett trimtabs
  • Sea Star hydraulic steering
  • Racor filters on engine and generator
  • Oil-x-Changer system on engine and generator
  • SeaFire automatic fire fighting system
  • Three auto/manual bilge pumps with high water alarm
  • Bilge blower
  • Dripless shaft seal
  • Windshield washers/wipers (3)
  • Cruises at 8 knots at 5.0 gph
  • Fresh bottom paint and zincs spring 2019

Aft Deck / Cockpit

One of the great features of the 400's cockpit is the fiberglass top which is the aft end of the bridge deck above. The top provides sun and rain protection and gives the cockpit the feeling of back porch. Other features include a transom storage locker with washdown, a transom door for easy access to the swim platform, molded in stairs to the bridge, a large lazarette access hatch and easy access to the bow via wide side decks with high bulwarks.

  • Dinghy Davits
  • Diamond Pattern Non-Skid
  • Transom Door
  • Fiberglass Swim Platform w/Swim Ladder
  • (3) Cockpit Scuppers
  • Port & Starboard Folding Boarding Step
  • Transom Storage Locker w/Freshwater Washdown
  • 50amp Shore Power Inlet w/Breakers
  • Cable TV/Phone Inlet
  • Transom Shower
  • Large Hinged Lazarette Access Hatch
  • Second Molded-In Cockpit Hatch For Better Generator Access
  • Molded-In Stairs To Flybridge
  • Storage Compartment Under Stairs
  • 12v Custom Cantalupi Overhead Lighting w/Remote Control
  • 12v Courtesy Lighting
  • (2) Large 12" SS Transom Cleats
  • (2) SS Handholds On Underside Of Hardtop Port & Starboard
  • Dockside Pressure Water Inlet
  • Cockpit Shore
  • 12v Outlet

On Deck

The 400 Trawler has set the standard in size vessel with the safest access around the deck you are likely to find. Wide, easy to navigate with high bulwarks and handrails, this deck layout will make docking and anchoring as secure as can be. Mainship's no-wood exterior makes it a breeze to keep this boat looking new without the expense of maintaining brightwork found on other types of trawlers. At the bow, there is windlass, dual bow rollers and a Sampson's post to make anchoring less of a chore. You will also find shore power connections at the bow and stern for your convenience.

  • Wide 15" Side Decks w/ Flybridge Overhangs
  • Diamond Pattern Non-Skid
  • 12v Overhead Lighting
  • 12v Courtesy Lighting
  • Over-sized SS Handrails
  • (2) 10" SS Spring Cleats
  • (2) 10" SS Bow Cleats
  • Recessed SS Tank Vents In Hull Sides
  • Bowmar SS Ports & Hatches
  • (3) Windshield Wipers w/Washers
  • Windshield & Side Door Covers
  • SS Sampson's Post
  • Bow Pulpit w/Custom Stainless Steel Dual Bow Rollers
  • (1) 50amp Shore Power Cable
  • ACR Dual Beam Spot Light
  • Recessed Electric Lewmar Windlass w/Gypsy & Capstan
  • Foot Switches For Windlass
  • 35lb. Bruce Anchor w/Chain & Rode
  • Large Anchor Locker w/Port & Starboard Access
  • 50amp Shore Power Inlet At The Bow w/Reset Breaker
  • Navigation Lighting
  • Antique White Gel Coat Finish On the Hull & Deck w/Dark Blue Stripes & Gold Accent Stripes
  • White Vinyl Rubrail w/SS Insert
  • (2) propane lockers with (4) propane tanks on bridge

  • Molded stairs to flybridge and deck
  • Enclosed flybridge with seating for 10, and folding table
  • Jenn-Air electric grill
  • U-Line ice maker
  • Stainless steel sink
  • Hot and cold freshwater shower in cockpit
  • Wide, covered walkways
  • Stainless steel bow pulpit and rails
  • Lewmar windlass
  • CQR anchor with 150' chain
  • (2) Delta anchors (35lb.) with 30' chain and 250' rode
  • 9' Achilles dinghy with new Yamaha 15 hp two cycle outboard (10 hrs.)
  • Weaver dinghy mount with Weaver Lever and 3 standoffs
  • Walk-thru transom door with fiberglass swim platform
  • Textalyne mesh windshield covers
  • Folding mast with spreader lights

Bridge Deck

The bridge deck area is comfortable and well laid out. Access to the bridge is via molded in fiberglass steps in the cockpit. The aft end of the area is open and features the very popular summer kitchen option with sink. There is also a mounted 24" round table and a folding radar mast which color matches the gel coat. Moving forward into the covered area of the bridge, there is an L-shaped settee on port and straight settee on starboard with a folding table between. At the forward end of the area, the helm is on centerline with a pedestal seat and additional forward facing seats on either side.

  • 8kw Kohler generator
  • Sidepower 6.5kw bow thruster
  • (4) 8D bateries (two are AGM & two are Lead Acid)
  • (2) Protech 1250 battery chargers
  • (2) battery switches


All Seatalk connected

  • Raymarine ST6001 autopilot
  • Raymarine VHF
  • Raymarine Pathfinder color Radar / GPS / Plotter with repeater at lower helm
  • Raymarine Tridata system
  • Bridge - JBL Stereo / CD player (4) speakers
  • (2) TV's
  • Bose Sound system CD /DVD / Stereo

  • Dinghy cover
  • Grill cover
  • Chairs cover
  • Instrument cover
  • Outboard cover
  • Table cover
  • Full enclosure for bridge

Additional Equipment
  • Forespar Nova davits
  • Towing / anchor bridle w/rubber shock stoppers
  • Fire Ext.
  • Docklines
  • Fenders
  • (2) boat hooks
  • Fender board
  • (2) portable showers
  • Hot and cold cockpit shower
  • Flag pole and mount
  • Winch for dinghy
  • 120qt. cooler with tie downs
  • First aid kit
  • Brig Falcon F360 inflatable dinghy 2006 model (New 2009)
  • Dinghy anchor with 100' rode
  • 2007 Yamaha 15hp two cycle outboard for dinghy

Recent Upgrades
  • New Lewmar winch 2007
  • New Frigidaire microwave 2017
  • New battery switches, master elec. fuse, (2) New battery chargers, battery isolator 2007
  • (2) New 8D Batteries spring 2019
  • New macerator 2016
  • New davits 2008
  • New shower sump + switch 2011
  • New forward bilge pump + switch 2013
  • New aft bilge pump + switch 2013
  • New dinghy cover 2017
  • New engine room bilge pump + switch 2014
  • Rebedded all screws, hardware lower deck 2010
  • Rebedded all screws, hardware upper deck 2015
  • New AC units 2017
  • New TV's 2017
  • New deck fresh water controller 2019
  • New refrigerator / freezer 2007
  • New canvas bimini & enclosure 2016
  • Custom bridge table 2016
  • New thru hull ball valves 2009
  • All manuals included

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.

Brewer Yacht Sales, Inc. is pleased to assist you in the purchase of this vessel. This boat is centrally listed by Spicer's Brokerage Sales.

  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler
  • 2004 Mainship 400 Trawler



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Disclaimer: This listing is courtesy of the BoatWizard Multible Listing Service and is listed with another brokerage firm. It is offered as a convenience by Brewer Yacht Sales to their clients and is not intended to convey seller representation of this particular vessel. Many vessels today are sold by cooperative efforts and you are welcome to put Brewer Yacht Sales to work for you as your agent. There are no fees to you for this professional service. Put us to work for you today!(7107824)