how to find leak in glass boat

[bigbaron]

I've got water in one of the underfloor compartments (savage escort 5.1m glass boat).  where the floor fuel tank is i have bung going left, right, forward to what should be water sealed compartments (floor was recently replaced), but I'm getting water (fresh not salty) water in one side, which I presume is from rain (I get about a bucket of water every 2 months).  But I cant find out where its getting in.  Anyone have any idea's?  best so far is to stick a flare in the bunghole and see where the smoke comes out?  

Or is it possible water coming from the ocean is getting in, but salt is getting filtered out?

[frankS]

Safer to use a very powerful flash light or a flood light and make a tapered funnel so it fits over the light and into the bung hole and look to see if any light shining up through the floor.

 

Frank

[rickmarlin62]

you can always try air pressure..force air hose wrapped in rag in bung hole then listen inside for escaping air...you should have stringers running crossways under your floor which will stop light from reaching into the compartments..rick

[Trailcraft43]

The air pressure is a good idea.

Get an old bungplug, drill it to fit a tyre valve, screw it in and pressure ise the under floor cavity

Also use a squirt bottle with thick concentration of dishwashing liquid.

Spray it around suspected leak points and it should blow bubbles.

Edited March 6, 2017 by Trailcraft43
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[bigbaron]

nice idea's guys!  I'll give them a go over the weekend.  too windy to get out.