cockpit combing to deck mounting construction details

[oldteakboat]

We have a 1961 Cheoy Lee Robb 35 that is missing its cockpit combing (gets a bit wet when we heel!) and we are in the process of building new combing out of 4/4 teak. The deck is the original ply on oak frames on 7.5" centers. The plywood, despite its age, is still structurally sound, but will need some extra support for the combing as the combing will also be in part acting as backing for a couple of winches. Does anyone have a good reference or suggestions as to the best way to attach the combing to the deck? One way or the other I will tie the combing via blocks to the frames on the underside of the deck to insure we don't rip the deck out when the winches get tugged on. However, I don't want to cut into the plywood if I don't have to, but also want a sound and leakproof seam on the combing.

[Jack Heinlen]

Hm, rather than show off my ignorance I think I'll ask a question or two.

What is covering the ply, and what framing is its inboard edge sitting on? It should have a longitudinal shelf or stringer called a carlin which would, in part, be used to fasten the combing to. Is the cockpit currently closed in? Questions, questions.

There are any number of books that detail this, Macintosh's How to Build a Wooden Boat and Chapelle's Boatbuilding , spring to mind.

[ 01-12-2004, 12:32 AM: Message edited by: Jack Heinlen ]

[JimConlin]

Seems to me that the heavily loaded bits here are the sheet winches.
If you're mot being fussy about weight, the Concordia Yawl winch bases are attractive and functional.
Block securely under the deck, seal the bores for the winch bolts and bed thoroughly.

http://www.concordiaboats.com/images/DCP_1554.JPG

[rbgarr]

Jim-

Does your boarding ladder fold up flat for storage via those hinges on the tops of the steps?

[JimConlin]

Would that it were my boat. Sigh.

I lifted the photo from the Concordia site (http://www.concordiaboats.com/concoparts.htm)
The hinge is underwater and the ladder is folded. The top of the ladder appears to hook into genoa track slides.

[Stiletto]

That lovely ladder looks very similar to one featured in WB many moons ago.

[oldteakboat]

Jack:
The ply is covered with glassed canvas and sanded paint which I plan to sand down to bare wood for mounting and sealing. That connection is one I am specifically interested in since it will be getting stressed and wet at the same time. The subdeck framing 1.5" x 1.5" oak on 7.5-9" centers extends from the gunwales to the cockpit seats. The frames are connected with a 1.5" x 6" longitudinal oak stringer that I will hopefully be able to tie into. It has been butchered a little by someone, but some sistering or scarfing should solve that. I haven't carefully compared its location below deck to above deck where I intend to mount the combing, but I think it will provide a good below deck mount. I am concerned with lateral stress from the winches and think a few blocks in below inboard and outboard of the stringer are worth their weight. The cockpit is open.

Thanks for the references..I will take a look. I also liked the photo attached in the other reply (along with the cool folding ladder that I will now be forced to build now that I've seen it). The Robb 35 lines are nearly identical to the Concordia yawls, just smaller, and I have always throught Arthur Robb did a little borrowing. I actually had been considering a style like that shown in the photo, but need construction details.

Thanks again

[Jack Heinlen]

As lovely as the photog is, it makes this thread really difficult to read. Downsize, perhaps?