I'm steadily making progress on the full restoration
of my Bristol 27, but before I fully build out the interior
, I've been considering adding some fore-to-aft stringers in the boat. I may be using the term "stringer" wrong here, but in my mind, I consider a stringer as a forward to aft reinforcement, fiberglassed directly to the hull
which will add add strength and resist torsion of the hull
. Below is an image of the stringers I plan to add (the stringer locations are in red):
To further assist, I've broken down my current
thinking and questions below. If you'd like to add some input, feel free to address the specific questions I've posited and/or add comments to anything I'm not considering.
+ What material should I use for the stringers?
-> I've heard that one can use halved PVC, foam, wood or even halved garden hose. My issue with the hose or PVC is that there would be a gap inside that could possibly trap water
. Since these stringers will likely be installed below a layer of insulation
, there won't be an opportunity to drain any condensated water
. Adding wood would seam quite heavy, so maybe foam is the best choice? If so, what type of foam?
+ Should I drill through already installed bulkheads in an effort to span stringers between bulkheads?
-> I've read the most effective stringers run all the way from forward to aft. However, it would seem to me that adding them between the major bulkheads in the boat would also add a significant amount of strength and I don't really want to drill through bulkheads to run these stringers if it's not necessary.
+ How important is it to add these?
-> I'm really trying to go all out for strength on this boat. I'd like to go to northern latitudes where ice may be an issue. Obviously I'm not trying to winter over or anything with a fiberglass
boat, but I want to build the strongest boat possible.
A few note about this plan:
+ I won't be able to install stringers between the mast-head bulkheads (the head
compartment and icebox
area), because I've already completed major construction in these areas; meaning I have insulation
already installed and no clear access to the hull to install stringers. That being said, these areas are quite reinforced already so I'm not too-too worried.
+ I would add more stringers, however things like the settee tops, interior
bulkheads and shelves will act as stringers as well. So, the stringers have been placed only in areas where there will be large "panels" of fiberglass
+ If you'd like to get a more full idea of how the interior is constructed at this time, see the images
below or visit my project
site - www.bristol27.com