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Old 05-18-2018, 10:02 PM   #1
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34 Mainship MK1

I have and will be looking for a MK1 on the east coast up to the great lakes. Am looking for one repowered. RKinne@SBCGlobal.net

I am ready to buy and have researched these in depth. Hard to find!!!
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Old 05-19-2018, 04:13 AM   #2
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Best of luck with your search
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Old 05-19-2018, 05:25 AM   #3
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Welcome to the forum and good luck with your search. We have looked at many in the Great Lakes, fresh water boats, but inventory is a bit low right now and prices are high as the US economy is good and people are buying toys.
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Old 05-19-2018, 06:12 AM   #4
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There are a couple within a few hours drive of your location but not repowered. Might be worth the drive to get a feel for what they're like if you haven't been on one before.
In our opinion, they make nice little pocket cruisers, especially if you're a hands-on kind of person. There's a wealth on information about them available online,which helped us make our decision & also helped us make decisions about upgrades.
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Old 05-19-2018, 06:22 AM   #5
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Greetings,
Welcome aboard.
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Old 05-19-2018, 08:27 AM   #6
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Siestakey - Thank you, Please spread the word. I have allot of knowledge in boat repair, operations. I look forward to contributing. There is one in MI but the seller is not getting back to me
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Old 05-19-2018, 08:32 AM   #7
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Thank You Boomerang, I have crawled around in a couple. I would love to have the opertunity to ride in one just to get the feel. I am super excited to find one and have my fiberglass, wood working tools shined up! It’s a make sense boat for me.
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Old 05-19-2018, 08:50 AM   #8
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Labomba - You are looking to purchase a Mainship also? Your profile pic looks like you have quite a nice set up now.
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Old 05-19-2018, 09:08 AM   #9
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Here's one that's been repowered and is about 80% complete @ 24k.

I know why would you pay 24k for a boat that needs finishing when there's boats out there that are finished @ 35k?

Most of those 35k boats aren't finished they are "covered up".. Coming from someone who's working on one having a blank slate is kind of valuable when you can add things YOU want, have enough budgeted to pay someone to do it, etc.

You're going to want to install nice flooring and make the boat look fresh anyway.

I'd also prefer a boat that's overpowered but gets great mpg at trawler speeds. The Mainship can run along at 15 knots and sometimes you need to get away from something or make it somewhere before dark. Also could put together a 4 man group and run it like a sportfish on occasion(splitting the fuel bill).

Also subscribe to the yahoo mainship owners group. I spend my time here because the yahoo group format is horrible but some of the best deals i've seen have been there. I remember a restored 34 with a yanmar going for around 35k.

EDIT I removed the link after looking again.. not a great deal.
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Old 05-19-2018, 09:32 AM   #10
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Mrwesson - I canít agree more about the over power. It gives you all the options. Quite an impressive performance curve. I also will be customizing floors, cabinets etc. A repower with needed cosmetic work is fine.

You may have been looking at the MK2 with the Cat engine. That boat has the smaller flybridge. I would take the Mk1 or Mkiii.

It seems the main stream sites have not been updating with these mianships. I was looking for another resource to hunt down these boats on the market or just in local yards.

Thank you for looking.
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Old 05-19-2018, 10:34 AM   #11
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I looked at a 1980 Mk1 near Annapolis, Kent Narrows in December. The boat was repowered with a John Deere 220, approx. 3000 hours if I remember correctly. I'm sure no expert when it comes to boats, but the decks, flybridge seemed rock solid ( think they were rebuilt ). It was still on Yachtworld a while back. The owner made some changes to the cabin area. Good luck.
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Old 05-19-2018, 12:28 PM   #12
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Originally Posted by mollygray View Post
I looked at a 1980 Mk1 near Annapolis, Kent Narrows in December. The boat was repowered with a John Deere 220, approx. 3000 hours if I remember correctly. I'm sure no expert when it comes to boats, but the decks, flybridge seemed rock solid ( think they were rebuilt ). It was still on Yachtworld a while back. The owner made some changes to the cabin area. Good luck.
I was docked next to this boat for a month in Crab Alley Cr last year. Your correct flybridge, deck, gunnels all redone. The PO owner added a Northern Lights 5 kw, Lectra / San treatment, new windlass and extra bilge pumps plus new bridge canvas with screens. The owner sold due to health reasons, too bad you missed her it was sold recently.
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Old 05-19-2018, 12:45 PM   #13
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Hi David, thanks. I should have rechecked before posting. I liked the boat, the boss not so much. I told her that the previous owners had dumped a ton of money into her. When she saw another boat close by , it was deal off. Was hoping to have a boat on the Chesapeake this spring, but it looks like I will have to wait. Jeff
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Old 05-19-2018, 01:38 PM   #14
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Thank You Molly gray- I saw that boat online also. I wasn’t a fan of the interior and some of the workmanship. But looking back, and seeing what is available. That probably was a great buy. The other items could be reworked in time.

John Deer is a great generator motor. I assume they have a good rep in marine, but you don’t hear much about them.

Thanks for the input, no worries, they come on and off the listing sites.
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Old 05-19-2018, 02:23 PM   #15
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Nothing runs like a Deere. You find a MKI or MKIII with a Deere, your assumption as to the quality of the engine is correct. There is a reason they are so popular in gen sets.

In my opinion, you need 220HP + to keep a MKI on plane at 14-15 knts, they get weird above 17-18. Mine had 200HP and strained to get "over the hump" but minimum plane was about 13.5knts medium load. Any turn, wake or sea and she would fall off.

For planing Mainships a pair of 42 x 12 trim tabs is invaluable



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John Deer is a great generator motor. I assume they have a good rep in marine, but you donít hear much about them.
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Old 05-19-2018, 03:27 PM   #16
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Keys disease, That’s what i’m Hearing.. Yanmar 230, Cummins 220, Deer 230 would be ideal.. Cats eh.. no Volvo.. That’s all, just that little bit more hp to get over the hump. Sum bigger tabs to keep you there when you pull back. Love it. I want one very badly! I am trying to not be in a rush but I have been looking for over a year and am funded.

Did you add a sided window on yours below the stock ones? Hard to see in the small pic, but I see a black area. Would be a great spot for a view!
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Old 05-20-2018, 09:14 AM   #17
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Mrwesson - I can’t agree more about the over power. It gives you all the options. Quite an impressive performance curve. I also will be customizing floors, cabinets etc. A repower with needed cosmetic work is fine.

You may have been looking at the MK2 with the Cat engine. That boat has the smaller flybridge. I would take the Mk1 or Mkiii.

It seems the main stream sites have not been updating with these mianships. I was looking for another resource to hunt down these boats on the market or just in local yards.

Thank you for looking.
That was the one and I removed it because I too dislike the MK2 lack of cabin space.

I'll go against the grain and recommend a 315hp QSB cummins. Why 315? because it goes from 230 to 315 with absolutely no difference in weight(same engine). At that point the handling characteristics are up to you. I've ridden in a mainship 34 with this setup and it does get slightly squirrely in beam seas @ 20 knots but with trim tabs you can tame it.

The QSB is very modern with electronic fuel monitoring but it does add a few electrical do-dads that you probably cant work on. Side effect of tech.

The 315 will burn .8gph @ 6.8 knots(very close to hull speed).. Incredible. 14gph @ 20 knots is also very good.

A 260hp yanmar would be a good fit but cost more than the 315 cummins.

This boat has the same setup as the one I rode in and is a great resource. Engine Selection - My CMS

They repowered with the 315 QSB for the same reasons.

None of these engines will just drop in without some work to the mounts/stringers but it's minor(also documented on that website).

Here's some cost figures of a repower with alot of notes/info. This guy went from a perkins to a 270hp cummins. http://mainship34.com/wp-content/upl...wer-notes-.pdf
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Old 05-20-2018, 10:25 AM   #18
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The second link is to Jay Leonards re-power of Attitude Adjustment, and he may chime in here as he's still around although on an Albin nowadays instead of his much discussed racing Mainship.

My boat never saw North of 15.5knots (GPS) on 200HP and that was downhill with a tailwind. Jay does have direct experience in that rarified air in the 18knot+ range.





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This boat has the same setup as the one I rode in and is a great resource. Engine Selection - My CMS

They repowered with the 315 QSB for the same reasons.

Here's some cost figures of a repower with alot of notes/info. This guy went from a perkins to a 270hp cummins. http://mainship34.com/wp-content/upl...wer-notes-.pdf
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Old 05-20-2018, 03:52 PM   #19
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This is great information. The efficiency of the Cummins is impressive. I suppose this would allow me to run with an old Perkins for a while and work on the rest of the boat...but, knowing me I would end up completing full maintenance to the Perkins. I am quite particular with the mechanicals especially on a single screw.

So is would be spending money on something that will be remove.

Another option is to re-power right away. So I find a boat for 35k range, repower for 20k and be in for 55k. This is before other upgrades - deck repairs etc.

Final option is an already repowered boat for the 45 - 48k range.

Itís all in the equation.

I found a1987 37 Albin sundeck for 45k with twin Cummins 5.9 it has the galley in the aft. Interesting I went and looked at it. Some questionable construction but pretty boat. Odd layout. Modified v Hull, so not a trawler at all.

I am stuck on the Mainship with the semi displacement, and really like the rear cockpit. I would install a transom door and a nice fiberglass swim platform.


You all seem to have some hours in the Mk1.. in general how do you like the handling of the boat. I understand there are pros and cons to all. Does she seem to slice the water of average seas at a 12 knot pace. Does she roll side to side more or less than average?

Thank you, Your input has been extremely helpful as I add to my research library.
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Old 05-20-2018, 04:39 PM   #20
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Great in a a head sea.

Acceptable in a beam sea(considerable rocking).

One of the worst in a following sea(flat stern).

The advantage?
Here's me flats fishing in 4' of water. The gesture is because my wife caught her limit and asked "want me to take a picture of you not catching anything?".



For every advantage there's a disadvantage and if you're looking for a "blue water boat" you could spend your money better elsewhere. If you go into it with eyes wide open about what you're getting you get alot.
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