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freebirdsailing 02-09-2014 09:49 PM

planning to buy: steel hull / wooden deck
 
1 Attachment(s)
Hi there, I found a wonderful boat. It's a Koopmans 37 "Ocean Racer", build in Holland in 1984, very well maintained and equipped. The only thing I don't like is the fact that her hull is made of steel while her deck is made from marine plywood & fiberglass (resting on steel frames) covered by a teak deck. I have owned 2 steel boats by now, and I am comfortable to accept the necessary maintenance routine. What I am afraid of is the combination steel / wood. Isn't there always rust where steel and wood meet? And aren't these areas always most difficult to reach? Her famous designer chose this composite construction method to save weight. And he succeeded: less deck weight, less ballast resulting in 7 tons total weight for 37 feet.
Does anyone of you have some experience in this regard? I am flying to France in 2 weeks to see the boat and possibly buy her. So I am most grateful for any advise you might have.
Cheers,
freebirdsailing

ps: u fortunately my post count is 2, and as I just learnt from the forum rules I can only post a picture with a post count of 10 :confused:

Classic30 02-09-2014 11:03 PM

Re: planning to buy: steel hull / wooden deck
 
Nice boat! :)

IMO, there's nothing wrong with composite construction - Clipper Ships pioneered that idea centuries ago - so long as the deck is fastened to the frames properly, there should be no issues to speak of unless someone screwed something into the deck without sealing it properly.

Just make sure you look for deck leaks (with tell-tale rust trails) overhead when you're doing the inspection down below.

Brent Swain 02-12-2014 10:06 PM

Re: planning to buy: steel hull / wooden deck
 
A wooden deck on a steel hull is a big mistake and a huge maintenance problem down the road. With wood swelling and shrinking , and steel stable, there is no bedding compound in the world which will keep it tight forever.
I have heard the coast guard had good luck with steel hulls and aluminium super structures, bolted on. I' d prefer to make the transition at the cabinside -cabintop joint.
With a wooden deck you lose the huge advantage of metal ,the ability to weld things down, the most reliably watertight and super strong connection possible.

Classic30 02-12-2014 11:00 PM

Re: planning to buy: steel hull / wooden deck
 
Brent, sure, steel-on-steel is better structurally but for various reasons it isn't always what people need or want. Timber deck planks should be at least as thick as they are wide and sealed at the edges, not underneath. Here's a picture for you:

http://titanic-model.com/db/graphics...b-02-fig-4.jpg

Quote:

Originally Posted by Brent Swain (Post 1411889)
A wooden deck on a steel hull is a big mistake and a huge maintenance problem down the road. With wood swelling and shrinking , and steel stable, there is no bedding compound in the world which will keep it tight forever.

Wrong again: It's called "Jeffery's No.2 Deck Glue". Amazing stuff. ;)

freebirdsailing 02-13-2014 01:44 AM

Re: planning to buy: steel hull / wooden deck
 
Many thanks for your thoughts and the picture so far! I myself would have never considered buying a steel boat with a wooden deck for the obvious reasons - its just that everything else of this yacht is just what I want ;)
The owner claims that this boat has been cruising for 30 years now without any leakages or corrosion issues due to her steel / wood construction. I will have a close look on these arguments next week during the inspection.

By the way, she has been on the market for quite some time now (the latest add just expired) and the current asking price is 65.000 Euros or 88.500 US$. So, beautiful and well equipped as she is, there seems to be a lot of doubt out there in regard to her lightweight construction.

Classic30 02-13-2014 05:13 PM

Re: planning to buy: steel hull / wooden deck
 
Lightweight construction? You mean people don't like how Koopmans Senior designed his yachts? I've never heard of one falling apart.

If well built and well maintained, I see no reason why there should be any leakage or corrosion issues - even after 30 years. If she's as good as you say, the price seems about right to me but if she has been on the market for a while you may be able to talk the price down further.

If you like what you see, make sure you get the boat professionally inspected before handing over any money. Preferably take the inspector with you if you can. No one should ever buy a steel boat, any steel boat, without first arranging an out-of-water survey.

Good luck!! I hope it works out for you. :)

freebirdsailing 02-13-2014 06:14 PM

Re: planning to buy: steel hull / wooden deck
 
Thanks, Classic30, I will keep you updated!


Sent from my iPhone using Tapatalk

freebirdsailing 02-13-2014 06:39 PM

Re: planning to buy: steel hull / wooden deck
 
.. and with "lightweight construction" I was only referring to this particular composite build yacht, which, to my knowledge, is rare among the koopmans designs. I would prefer a solid steel construction.

CharlieCobra 02-15-2014 07:19 PM

Re: planning to buy: steel hull / wooden deck
 
Quote:

Originally Posted by Classic30 (Post 1412193)
Brent, sure, steel-on-steel is better structurally but for various reasons it isn't always what people need or want. Timber deck planks should be at least as thick as they are wide and sealed at the edges, not underneath. Here's a picture for you:

http://titanic-model.com/db/graphics...b-02-fig-4.jpg



Wrong again: It's called "Jeffery's No.2 Deck Glue". Amazing stuff. ;)

No doubt. Marine ply that has been glassed doesn't move. Teak that has cured well prior to installation doesn't move either. Butyl works great as does good old fashioned tar. More horsecrap psuedoknowledge by Mr Swain as usual...

Brent old Son, please trying to impress folks with your knowledge or lack thereof. Better to keep your mouth shut and be thought of as a moron than to open it and confirm it.... :laugher

bobperry 02-15-2014 07:34 PM

Re: planning to buy: steel hull / wooden deck
 
Go get 'im Charlie!


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