Water under the deck.

ParallaxBill

Petty Officer 1st Class
Joined
Aug 27, 2006
Messages
341
Guys & gals,
I've posted on the other forums about my 73 Glassmaster Tarpon bowrider not coming up to rpms and have mentioned that the engine is in top tune, hull is clean as can be beyond some minor scratches. But it only ran 3500 rpm @ WOT the last time I had her out for a run. The previous owner had changed props and noticed an rpm drop so I had just ordered a new aluminum prop "here" at iboats to change from a mercruiser SS 13.75"x21 pitch to a 14.5"x19" pitch to bring up the rpms closer to 4000 or so.

But today I discovered I had some water under the deck upon pulling out the interior underdeck plug which apparently had not been pulled in quite some time. The rubber had deteriorated and swollen badly. Water ran out of the boat for a few minutes and I estimate only 5-10 gallons were in there where water shouldn't be.

So, I have a few questions.

Since the floor is basically solid with no soft spots have I saved the floor?

How long should I leave the boat tilted back with the plugs out to let it drain?

Will the underdeck bilge dry enough to stop further damage if there has already been some, and is there any way to dry the area more rapidly?

Could the water have entered from the external bilge past the deteriorated underdeck plug? Or did it come through the floors from the boat not being covered for some time? The hull is watertight.

Should I worry a lot about it or just dry it out, keep it dry and take a wait and see attitude on tearing up the deck to repair any harm?

I have a new heat reflective boat cover and intend to never let the boat stay our in the rain. The previous owner apparenly didn't see the need for the last year.

I value your opinions on this.
Thanks,
Bill
 

Solittle

Fleet Admiral
Joined
Apr 28, 2002
Messages
7,518
Re: Water under the deck.

The only real answer to your questions is that you will have to wait and see. A lot depends on what kind of protection tha manufacturer gave to the underside of the floor when it was built 33 yrs ago. If it was glassed in well it should last another 33. If it was raw wood - - who knows.

If your through deck plug was one of those little things then there won't be much airflow getting underneath to dry it out.

Keep it covered when you can, the bow high and put a couple of bucks in a jar from time to time if a problem pops up.
 

ParallaxBill

Petty Officer 1st Class
Joined
Aug 27, 2006
Messages
341
Re: Water under the deck.

I think I can rig up a small air pump with a hose to run into the void to help circulate the air. I couldn't hurt.:)
 
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