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Old 07-13-2017, 09:01 PM   #1
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City: Rumson
Country: USA
Vessel Name: Sea Moss
Vessel Model: Mainhip 350
Join Date: Jul 2017
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1999 Mainship 350 (390)

For sale, a well-maintained, single-owner boat that has traveled the Triangle Cruise, America's Great Loop including the Bahamas, and numerous other voyages. Highly desirable for her long-range cruising capability with economical and easy to maneuver twin Yanmar diesel power. Her folding mast, 3'8" draft, and walk-around deck make her ideal for navigating the waters of the Great Loop, day-boating, and vacation travel.



Asking $124,900
Located in NJ
Engine Twin Yanmar diesel
Hours 2500
Hull Fiberglass
Hull Shape Semi-displacement
Hull length nominally 35'
LOA 39' 9"
Beam 14' 2"
Draft 3' 8"
Air Draft 18' 4" mast folds to 16'
Head room 6' 6"
Dry weight 22,000 lbs
Dingy 8' Hypalon AB with 9.9 Johnson

Video walkthrough https://youtu.be/lXElXkSX5QE
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Old 07-14-2017, 01:21 PM   #2
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City: san diego
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Vessel Name: BRILLIANT
Vessel Model: Mainship 390
Join Date: Jul 2012
Posts: 1
Mainship 390

She appears to be a beautiful, well-equipped Mainship. You should have little problem selling her. May I ask how the decking where the anchor windlass is now mounted, (previously an opening hatch), was reinforced and secured.
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Old 07-14-2017, 03:54 PM   #3
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City: Rumson
Country: USA
Vessel Name: Sea Moss
Vessel Model: Mainhip 350
Join Date: Jul 2017
Posts: 5
Correction of Mainship Windlass Mounting Error

Background: Mainship mounted the Lewmar windlass with only a 6" drop before the line hit the aftward slop of the bow inside the rope locker. Lewmar specifications call for a 24" free fall, and for proper operation, it is needed. Mainship attempted to correct the problem by rotating the windlass, but this caused the line to slip because it ran only partly around the drum. Most solve the problem by using all chain rode. This is fine in calm weather or if a snubber is used, but I like the give and the lighter weight of the nylon rode with about a 25' section of chain at the anchor.

To fix the design problem, I cut out a piece of thick marine plywood (leftover from the floor replacement of Garry H.'s classic Mainship) to fit a little over 2/3rd of the forward section of the hatch opening, and then mounted the windlass on the plywood. The thickness of the plywood closely matched the height of the opening lip for the prior hatch door. The plywood is bolted to the hatch opening lip and caulked around the sides. The plywood was coated in epoxy and white. The rest of the opening is covered with starboard with a latch for easy removal. Starboard would not have had the strength needed for the windlass thus the plywood. This starboard section allows access to the mounting bolts, the windlass and the anchor line and chain although it is rarely needed. There's a picture in the ad: 1999 Mainship 350 / 390 Trawler For Sale: Sea Moss Vessel Exterior - Pictures

There is also a lip down inside the stern end of the rope locker that was tilted aft that would collect water. I glassed that up to drain into the rope locker rather than holding water about the same time as the other work.

Clark
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Old 07-29-2017, 02:02 PM   #4
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engine hrs

How many Hrs on the engines?
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Old 07-29-2017, 02:03 PM   #5
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Engine hours?
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Old 07-29-2017, 03:23 PM   #6
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Engine hours?
In the description above, it says 2500 hours.

Jim
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Old 07-29-2017, 05:32 PM   #7
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City: Rumson
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Vessel Name: Sea Moss
Vessel Model: Mainhip 350
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Engine hours

Sorry, I don't seem to get mail on every post. It has 2515 hours as of this message. Modern diesels last about 10K hours. If used like I have used it for the last 18 years, then it still has 54 years left. There should be plenty of life left in the engines. Even if it only went to 7500 hours, that would be another 36 years. Most people don't own a boat that long.

Clark
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Old 08-04-2017, 06:20 AM   #8
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City: Manasquan, NJ
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Good morning Clark. Like the boat. Just looked at a 2001 Mainship single Cat in Maryland. Would like to see your boat. I live in Manasquan. If the boat is still available. Can contact me at reepermeg@msn.com, and Ill give you my cell #. Thanks, Bill Grimshaw.
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Old 08-04-2017, 07:10 AM   #9
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Hi Clark, I am interested in seeing your 1999 Mainship. Please email me at zan.miller@outlook.com and let me know if it is still available. Best regards, Zan Miller
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Old 08-05-2017, 05:18 PM   #10
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Clark, how fast will this boat go? Will it be happy at 15kts?? What is your speed at 2800RPMs? I only ask because I have owned that engine and I know that is right where it likes to be if you are running on top. I have a friend that is looking and if it will cruise reliably and happily on plane he would DEFINITELY be interested.
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Old 08-08-2017, 06:50 PM   #11
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City: Rumson
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Vessel Name: Sea Moss
Vessel Model: Mainhip 350
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Speed at 2800 RPM

Right now she's turning a bit fast at WOT as recent reconditioning work at the prop shop overshot the target, but with a prop on the money, 2800 RPM would give about 14 knots and will stay solidly on plane. It should do about 15 knots within the 3000 max continuous RPM engine spec, but I have never run it that way preferring to stay around 80% back off for better engine longevity.

Note, a buyer has placed a deposit on the boat and a sale is currently in progress.

Clark
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Old 08-09-2017, 07:49 AM   #12
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Note, a buyer has placed a deposit on the boat and a sale is currently in progress.

Clark
Congrats Clark!
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Old 03-21-2018, 05:29 PM   #13
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Did you sell boat?
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Old 03-21-2018, 09:28 PM   #14
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Quote:
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Did you sell boat?
The link he provided says it's sold...

1999 Mainship 350 / 390 Trawler SOLD!!!: Sea Moss Vessel Exterior - Pictures
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Old 03-25-2018, 08:38 PM   #15
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An example of how quickly well maintained boats sell. It wasn't luck at all, it's a nice boat at a fair price.
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