Re: [Paddlewise] pressurize the boat

From: Peter Treby <ptreby_at_ozemail.com.au>
Date: Thu, 05 Apr 2007 08:02:32 +1000
"...I have been on trips where someone in a commercial boat had a gallon 
of water accumulate in a day of vaguely rough water paddling without a 
clearly visible leak even looking at the situation on dry land. That is 
up there in the "effects handling" category."
The backup buoyancy approach has a lot to recommend it. Even with 
bulkheads and quality rubber hatches, it is comforting to have back up 
buoyancy inside compartments. If on a long trip, the compartments might 
be filled with dry bags full of gear. If a day trip, I used to stuff the 
two larger compartments with an inflatable float bag. I've gotten a bit 
slack about that lately, as compartments remain dry in all conditions, 
but the Great Lakes Sinking Story might get me back into that habit.

"On my earlier boats I would make hatches that were essentially just two 
cockpit rims covered with two spray covers, one slightly smaller inside 
the other. Actually it worked pretty well in an era that good watertight 
hatches were hard to find ( or some sand would get in the threads or 
whatever)."
Other than VCP rubber hatches, the only other hatch cover I have seen 
which keeps a compartment completely dry is a vinyl sewn cloth cover 
with a double thick bungy cord running around a sewn tube at the bottom 
edge. This goes over a round fibreglass coaming. These are used on "Sea 
Leopard" kayaks, pictures here: 
http://raftakayaks.spaces.live.com/default.aspx?_c02_owner=1
Photos 1,2 and 6 in the slides show these hatches. (Some classy paddlers 
there: check the guy in the red inflatable PFD ;-)) Perhaps surprising 
that this lightweight system works, but it does, at least in rolling and 
upright paddling in rough water. I don't have experience of surf 
capsizes with these, still need to be assured that they hold up against 
implosion in all conditions, but others say so.
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Received on Wed Apr 04 2007 - 15:02:37 PDT

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