1999 Mainship 350 Trawler
$139,000
Boat in Moore Haven, FL 33471 US
Built in 1999
350 Trawler
1 Engine (Caterpillar)
35 feet
Diesel
Fiberglass/Reinforced
1999 Mainship 350 Trawler - Seaglass
The 1999 Mainship 350 Trawler "Seaglass" is a highly sought-after single-diesel cruising trawler offering efficiency, comfort, and easy handling. Powered by a dependable 300hp Caterpillar 3116, she delivers economical cruising performance, paired with a Kohler 8kW generator (1,215 hrs) for extended stays aboard.
Designed for Great Loop cruising, coastal passages, or comfortable liveaboard life, this 350 features dual-zone reverse-cycle air conditioning (16k & 12k BTU), a spacious salon with cherry interior, a fully equipped galley with Corian counters, and a private master stateroom with island berth. The guest cabin with twin berths and a separate enclosed shower make her ideal for cruising couples or small families.
Her flybridge is fully protected with a Stamoid Bimini and full Strataglass enclosure, and docking is simplified with a Side-Power bow thruster. Updated electronics include a Raymarine Axiom RV9 touchscreen MFD with Quantum radar, VHF with RAM mic, and full upper and lower helm stations.
Well-equipped, well-maintained, and loaded with factory options, Seaglass represents an outstanding value in the 35' cruising trawler market.
Highlights
Single 300hp Caterpillar 3116 diesel
Kohler 8kW generator (1,215 hrs)
Dual-zone A/C with reverse cycle heat
Raymarine Axiom RV9 + Quantum Radar
Side-Power 4HP bow thruster
Upper & lower helms
Full Strataglass enclosure (2020)
Oil X-Change-R system
Cherry interior, updated salon furniture (2022)
Windlass & dual anchors
Racor fuel polishing system
Excellent Great Loop candidate
February 2026
- New Battery Charger
- New Bilge Pump
- New Windshield Canvas
- New Bow Thruster Motor, Cables, Joystick Control
January 2026
- Paint Swim Platform
- New Carbon Monoxide Monitor
- New Fire Extinguisher
December 2025
- New Windlass Cables
- Service Lower Helm Hydraulic Fluid
November 2025
- Bottom Paint
- Repack Packing Gland
- Oil & Filters on Engine and Generator
- Transmission Fluid Change
- New Batteries (5) Total
2024
- Serviced Fuel Filters
- Serviced Oil X-Chang-R System
2023
- Backup Camera
- Replaced Bow Thruster Propellor
2022
- Replaced Cutlass Bearing
- Replaced Water Pump Impeller
- Dual Zone Air Conditioning with Reverse Cycle Heat
- Kohler Generator, 8kW Diesel with 1215hrs
- Spotlight with Remote
- Windlass
- Oil X-Change-R System
Salon
- 16K BTU Air Conditioning System
- Cherry Interior
- Color Television, Wired for Cable
- New Salon Furniture, Chairs and Table (2022)
- LED Lights
- Full Windshield with Wipers
- Interior Lighting
- Large Sliding Door to Cockpit with Screen
- Lower Station with Full Instrumentation
- Opening Center Window
- Sliding Windows with Screens
- Stereo System with CD
- Flat Screen TV
- Phifertex Salon window covers with Heat Barrier Panels
Galley
- Corian Counters
- Portable Frigidaire Ice Maker (2021)
- Designer Faucet (2022)
- Dish/Cup Locker
- Full-Size NovaKool Refrigerator/Freezer, AC/DC
- Oversize Galley Sink with Cutting Board
- Overhead Cabinets
- Princess (3) Burner Range with Oven
- Microwave
- LED Lights
- Under-Counter Storage
Master Stateroom
- Center Island Bed with Inner Spring Mattress
- 12k BTU Air Conditioning System
- Cedar-Lined Wardrobe Locker (2)
- Drawers Under Berth
- LED Lights
- High Intensity Reading Lights (2)
- Mirror
- Opening Hatch with Sunshade
- Opening, Screened Stainless Steel Portlights
- Gas Shock added to Under Mattresses storage locker
Guest Stateroom
- Wardrobe Locker
- High Intensity Reading Lights (2)
- Opening Hatch with Sunshade
- Opening, Screened Stainless Steel Portlight
- Storage Drawers
- Two Single Berths with High Density Foam Mattresses
Head
- All Molded Fiberglass Head – Durable and Easy to Clean
- Built-in Vanity
- Electric Head
- Mirror
- Opening Hatch with Sunshade
- Opening, Screened Stainless Steel Portlight
- Separate Enclosed Shower
- Waste Tank Monitor
- Raymarine Quantum Q24D 24mile Dome Radar
Upper Helm
- Raymarine RV9 Axiom Touchscreen Display GPS/Chart/Depth/Fish Finder/Radar
- Side Power Bow Thruster Control
- ACR Spot Light Control
- Kenwood Stereo with 6 Speakers
- Standard Horizon Explorer Marine VHF with GPS
- Saturn Compass
Lower Helm
- VHF Ram Mic Ram4 with Intercom
- Side Power Bow Thruster Control
- AutoHelm Tridata Display Depth/Speed/Trip
- Saturn Compass
- (4) Batteries 500amp hour capacity
- 50amp Battery Charger
- AC/DC Converter
- 50 amp Battery Safety Switches
- AC and DC Control Panel
- (2) 50ft, 30amp Shore Power Cords (2) – Fwd and Aft Connections
- Bonding System with Transom-Mounted Zinc Anode
- Circuit Breakers (AC/DC)
- Color-Coded Wiring Harnesses
- Electric Bilge Pumps with Auto Switch (3)
- GFCI Protection Throughout
- Interior Lights
- Macerator with Overboard Discharge
- Reverse Polarity Indicator
- Water Heater
- Stamoid Bimini Top with Complete Strataglass Enclosure (2020)
- Magna Grill in Cockpit with Cover
- Cockpit Rear Drop Sun Screen Canvas
- Anchor Pulpit with Roller
- (2) SuperMax Anchors
- Sunbella Covers for Flybridge Seats and Instruments
- Cable TV/Telephone Connection
- Cleats – (2) Bow, (2) Spring, and (2) Stern
- Courtesy Lights – Cockpit, Bridge, and Deck
- Cockpit Storage
- Flybridge Seating for 6+
- Folding Table on Bridge
- High Density Rub Rail with Stainless Steel Insert
- Low Profile Bow Rail – Custom Aluminum
- Molded Steps and Walkway to Bridge
- Molded Swim Platform with Ladder
- Split Compartment Anchor Locker
- Safety Rails – Custom Aluminum
- Sampson Post
- Sliding Companionway Door
- Swim Platform Shower – Freshwater
- Venturi Windshield
- Bronze Strut and Rudder
- (3) Bilge Pumps
- 4HP Side Power Bow Thruster
- Racor 900 FG Fuel Polishing System with Water Detector
- Engine Alarm System
- Halon System
- Freshwater Cooling on Engine
- Fuel Filters
- Hot and Cold Pressurized Water
- Hydraulic Steering
- Sea Strainer(s)
- Seacocks on Underwater Thru-Hull Fittings
- Stainless Steel Shaft – Aquamet
- Trim Tabs
- Welded Aluminum Fuel Tanks
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
| Date | Event | Price |
|---|---|---|
| 2/13/26 | Initial price | $139,000 |
1999 Mainship 350 Trawler Video Tours
Overview from around the web 1999 Mainship 350 Trawler
Customers consistently praise the 1999 Mainship 350 Trawler for its spacious and comfortable interior, making it ideal for extended cruising and liveaboard lifestyles
Many highlight its solid construction and reliable performance, noting that the boat handles well in various sea conditions. The efficient pilothouse layout offers excellent visibility and ease of operation, which owners find very convenient. Additionally, users appreciate the ample storage and well-designed galley, enhancing onboard living. Overall, the 1999 Mainship 350 Trawler is valued for its blend of classic trawler aesthetics, functionality, and dependable cruising capabilities.
The Biggest Pros and Cons
The 1999 Mainship 350 Trawler offers a range of advantages and some considerations to keep in mind:
Pros
Spacious Interior: The 350 Trawler features a roomy cabin layout with comfortable sleeping accommodations, a full galley, and a well-designed salon, making it ideal for extended cruising.
Classic Trawler Design: Its traditional styling and displacement hull provide excellent stability and a smooth ride, especially in choppy waters.
Fuel Efficiency: Designed for economical cruising, it offers good fuel consumption, allowing for longer trips without frequent refueling.
Easy Handling: Equipped with twin diesel engines, the boat is relatively easy to maneuver, including docking and low-speed handling.
Good Storage: Ample storage compartments throughout the boat help keep gear and provisions organized.
Solid Construction: Built with quality materials and craftsmanship, the 350 Trawler is known for durability and longevity.
Cons
Moderate Top Speed: Due to its displacement hull and design focus on efficiency, the boat's top speed is limited, which may not appeal to those seeking faster cruising.
Aging Electronics: Being a 1999 model, onboard electronics and navigation systems may be outdated unless upgraded.
Maintenance Requirements: As with any older vessel, maintenance and upkeep can be more intensive and potentially costly, especially if previous owners have deferred necessary work.
Limited Headroom in Some Areas: While generally spacious, some parts of the cabin may have lower headroom, which could be less comfortable for taller individuals.
Less Modern Amenities: Compared to newer trawlers, this model may lack some of the latest conveniences and technology found in more recent boats.
Made For
The 1999 Mainship 350 Trawler is ideal for boating enthusiasts seeking a comfortable and reliable vessel for extended cruising. It is perfect for those who appreciate classic trawler styling combined with practical features, making it suitable for couples or small families looking to explore coastal waters or enjoy leisurely liveaboard experiences. Its spacious layout and sturdy design appeal to boaters who value comfort, efficiency, and ease of handling on the water.
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Meet the Broker
Address
Boat Location
Contact American Yachts
American Marine: Riviera Dunes/ Legacy Harbor/ Regatta Pointe, Corporate; 1065 Riverside Drive, Palmetto, FL, 34221
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