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Old 05-30-2012, 10:41 PM   #21
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Probably depend greatly on what you wanted to do with the extension. If you just want sun and weather protection a hard-top extension could be made pretty lightly. But it seems a shame to have that space and not be able to use it for anything other than a cover, so making it strong enough to hold stuff or people or both would probably come with a not-insubstantial weight price. To the point where I'd start thinking about getting some stability data, particularly if I intended to use the extension for stowage containers, a dinghy, etc.

On the other hand, if one is adding a strong hard top extension to a boat that already has a version with such an extension installed by the manufacturer, a stability study may not be important. For example several models of Grand Banks were available in tri-cabin, sedan, and Europa configurations. All using the same hull, same basic cabin dimensions and construction, engines, tanks, etc. So if one had a GB36 Sedan and wanted to add a hardtop extension over the aft deck strong enough to carry a dinghy on, you'd be doing what the factory already did to create the GB36 Europa.
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Old 06-01-2012, 02:41 AM   #22
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I have been in contact with valhalla in Bellingham it looks like they may have a good deck I could walk on I will keep you all updated
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Old 06-01-2012, 07:19 AM   #23
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Peter - They look great and I like the design. What's the height off the deck? I'm 6'4" and have spent a lifetime knocking my head on boats. Not sure I'd want to duck everytime I was on deck.
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Old 06-01-2012, 09:20 AM   #24
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I'm 5'10", and can walk all round the boat without coming close to touching any part of the frame, so plenty of headroom. Having said that, not many folk are 6'4", so I suspect you will always need to exercise care on any vessel, to avoid having chips taken out of your head, Chip (aka Anode). Sorry - couldn't resist that one.....
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Old 06-05-2012, 09:22 PM   #25
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I dug around some more and am unable to find out who did the flybridge extension, I did find the receipts when the engines were replaced with new John Deere units a few years ago.

The boat did spend quite a bit of time in Ft Lauderdale before being shipped to San Francisco where the engine work was done and I would ass-u-me that was where the extension, additional AC's and davit system's were added.

Sorry I didnt have more.
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Old 01-12-2013, 06:30 PM   #26
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Well I finaly got the extention finished here are some pictures. The final wieght is 250-275 Lbs all alluminium and is 6ft X 11ft. Also has two LED lights inside. Here are some pics.
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Old 01-13-2013, 01:43 AM   #27
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That looks very nice. Fits well on the boat and adds to it. You will not regret that addition.
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Old 01-13-2013, 11:10 AM   #28
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Looks nice! I think you'll get a lot of use from it. Good addition to the boat.
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Old 07-11-2013, 04:54 PM   #29
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I am "Europa-izning" mine as Peter B has done, but with Aluminum. I am adding a "radar arch" as well for more electronics.

I am having a local aluminum boat builder do mine, it runs right about 10K here....

I am taking it in to have it done after sockeye and hunting season since I dont have the time to have it done before then. Sometime this winter I will have it done and will post pictures...
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Old 07-12-2013, 08:28 AM   #30
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Quote:
Originally Posted by superdiver View Post
I am "Europa-izning" mine as Peter B has done, but with Aluminum. I am adding a "radar arch" as well for more electronics.

I am having a local aluminum boat builder do mine, it runs right about 10K here....

I am taking it in to have it done after sockeye and hunting season since I dont have the time to have it done before then. Sometime this winter I will have it done and will post pictures...
You certainly won't regret it Super D, we still say its the best improvement we ever did to Lotus. Frame and canvas/aluminium, whichever, it just works...
That job on GypSea Lynn looks great, but I would have taken it along the side deck in our climate. Maybe shade not such an issue there..?
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Old 07-12-2013, 11:51 AM   #31
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Turned out very nice
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Old 03-26-2015, 10:30 AM   #32
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Bump.

Pondering an aft deck cover of some sort. Appreciate the information here, and was wondering if anybody has gone this route in the two years since this thread petered out.
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Old 03-26-2015, 11:36 AM   #33
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Bump.

Pondering an aft deck cover of some sort. Appreciate the information here, and was wondering if anybody has gone this route in the two years since this thread petered out.
The boat I bought had an interesting one put on it about 10 years ago. Soft cover stretched over a VERY sturdy aluminum frame...







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Old 03-26-2015, 07:10 PM   #34
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Hi Steve...thanks for that! Looks like a releatively frugal (not too many yacht-bucks) and strong setup.
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Old 03-26-2015, 07:56 PM   #35
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What sort of extension, hard or soft, do you want to build?
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Old 03-26-2015, 08:26 PM   #36
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What sort of extension, hard or soft, do you want to build?
That's pretty hard to pin down right now. For now I'm trying to see what others have done, how they solved this problem, then come up with a plan.

If the 10 yacht buck estimates for a walk on deck with rails is any indication, it won't be that. It wouldn't suit the boat anyways.

Me-thinks a hard top would be better for rain.

In the photo below you can see the wrinkle we have to work out...the saloon deck/roof is at about chest height when standing on the aft deck. There are windows facing aft in the pilothouse which I don't want to block anyways, so I'm envisioning the height of the canopy/hard top to be about 6" below the pilothouse roof (at about the bottom of the pilothouse 'visor').

An even bigger wrinkle is dinghy storage. We might be getting a 12' dinghy, which is big for our 11' beam boat. (Want to explore the outer coast and exposed beaches after the mothership is safely anchored, so the dinghy has to be up to the job).

The framing for the canopy/hardtop will have to be plenty robust to support that much weight and wind forces. We'll tow for the most part, but would prefer to have the option of having the dinghy up and out of the way, such as when entering marinas for example.

A 12' dinghy would reach from the mast to just past the transom.
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Old 03-26-2015, 09:28 PM   #37
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Check these guys....

Home | Hard To Top
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Old 03-27-2015, 12:20 AM   #38
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Originally Posted by MurrayM View Post
That's pretty hard to pin down right now. For now I'm trying to see what others have done, how they solved this problem, then come up with a plan.

If the 10 yacht buck estimates for a walk on deck with rails is any indication, it won't be that. It wouldn't suit the boat anyways.

Me-thinks a hard top would be better for rain.

In the photo below you can see the wrinkle we have to work out...the saloon deck/roof is at about chest height when standing on the aft deck. There are windows facing aft in the pilothouse which I don't want to block anyways, so I'm envisioning the height of the canopy/hard top to be about 6" below the pilothouse roof (at about the bottom of the pilothouse 'visor').

An even bigger wrinkle is dinghy storage. We might be getting a 12' dinghy, which is big for our 11' beam boat. (Want to explore the outer coast and exposed beaches after the mothership is safely anchored, so the dinghy has to be up to the job).

The framing for the canopy/hardtop will have to be plenty robust to support that much weight and wind forces. We'll tow for the most part, but would prefer to have the option of having the dinghy up and out of the way, such as when entering marinas for example.

A 12' dinghy would reach from the mast to just past the transom.
Maybe some of the guys on the Sundowner thread of the Tug Design Section will be able to help.
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Old 03-27-2015, 01:26 AM   #39
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Maybe some of the guys on the Sundowner thread of the Tug Design Section will be able to help.
Good point. I'll rummage around in there tomorrow.
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Old 03-27-2015, 09:48 AM   #40
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Good point. I'll rummage around in there tomorrow.
Check that link I attached. They seem to be able to custom fabricate most anything to your design..

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