Modification of pilot house boats

thataway

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Nov 2, 2003
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C Dory Year
2007
C Dory Model
25 Cruiser
Hull Identification Number
DOR25652A707
Vessel Name
thataway
thataway wrote:
What I would envision is to lengthen the cabin top and house by 3 feet and put in a head/shower on one side and a hanging locker on the other. This could be done with Nadi-core, and a layer or two of glass on each side to keep the weight down, move the bulkhead aft, and make a wonderful cruiser.

svmegatron wrote:
I apologize for creating thread drift here.

In your opinion, how hard would it be to do something like this? If you had it done professionally, what kind of ballpark amount might you expect to pay?

I've often toyed with the idea of fiddling around with the pilothouses of pilothouse boats, C-Dory and otherwise, and I don't really have a handle on how big an undertaking it is. It doesn't *look* like it would be impossibly hard, but I'm very aware of how misleading my first impressions can be!


This would not be a first time glass worker's ideal project. You would first remove the old aft bulkhead, then fit it 3 feet aft. The cabin top lip would be cut off, and saved. There may be some minor modificaiton of the side decks and gunnel where the new cabin house walls would go. Then you would glass thin (10mm) Nadi-core to the inside aft end of the old pilot house. (I probably would use vinyl ester or epoxy resin), the outside wall would be built up of glass cloth (probably 1708) and faired to the aft end of the old wall. A new bulkhead for the forward end of the head, with Nadi-core 20 mm and then the inner wall. The fore and aft walls would be glassed to the aft bulkhead. The inner layer of glass also would be laid up--the closet and storage locker sides formed, and finally the new roof--probably 20mm to 24mm Nadi-core, with 1808 on the top and a couple of layers of 6 oz cloth on the bottom. I probably would put opening windows on both sides. Finally the outside gel coated or the entire cabin painted (might be easier) A door would have to be fitted for the head, and perhaps an inside window for visual sight lines aft.

Costs: probably $300 to $400 for the core, Another $300 or so for the resin, Glass and supplies $200. If you had to get it done, you might find some one to do it in the $35 to $50 an hour who does custom work. Several hundred hours would not be un-expected. This is far better suited to a project by a DIY. You could cut some of the expenses by using plywood for some of the core material, but it would be heavier.

There is a section by "oldgrowth" when he lengthened the 16' to 18'--somewhat similar process.
 
Fantastic. Thank you very much indeed for your thoughts on this. I remember the boat lengthening project - not nearly as simple as it seemed on the surface! "oldgrowth" did an amazing job, though, and it looks like a great ride now.
 
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