An idea from another thread.
Perhaps if you have any foam under the floor, it has become waterlogged?
As suggested, a moisture meter might tell a story.... or answer that question once and for all.
An idea from another thread.
Perhaps if you have any foam under the floor, it has become waterlogged?
As suggested, a moisture meter might tell a story.... or answer that question once and for all.
Gazza, not sure about weight of square metre of your ply,Originally Posted by gazza2006au
Weight per Sheet
Hardwood Plywood45 lbs
Marine Plywood50 lbs
Particle Board61 lbs
MDF66.7 lbs
Shakey - If only I lived near the coast
After a bit of reading.... moisture meters for the unskilled might raise more questions than answers.
Interesting read regardless.
Mostly about core testing,but can't measure through any void. (Air)
https://www.yachtsurvey.com/moisture_meters.htm
Hey Shakey marine plywood varies depending on where the wood comes from
Your 50lbs is 780kg a pallet sorry meant sheet/pallet not square meter Shakey
I still think you've added an extra zero or missed a decimal point 500 kg is half a tonne, 900 kg is just short of a tonne so for even the densest sheet that is extraordinarily heavy.
But I think we are all in agreeance that the new transom isn't causing the aft end to sink like that regardless of motor height, Gurns idea of floatation (the wrong kind maybe ) has merit but I suspect that at some stage the boat was left outside during some rain with the floor partially down and the water has gotten into the hull where it cant get out. Another thought is have a good look under the boat and check that some apprentice hasn't actually put a drill through the hull, happened top me once but forgotten about it, the leak in my case was slow as the screw just penetrating the hull was just poking through and semi sealed it.
Is there a bung inside in the bilge area or is it sealed off which would mean any water in there will not get out easily.
Weight or density per cubic metre Gazza?
Proper marine grade plywood 20 sheets a pallet 50kg a sheet = 1000kg
http://www.misterplywood.com.au/prod...marine-plywood
Hi all, thanks for everyone's input. I originally started this post as I believe its the new transom that added the weight and if anyone had suggestions on how to correct this issue. I can confirm there is no water trapped under the new floor. I wont bother weighing the boat as I don't have an original weight to go by.
It might be time to add a couple of pods to the transom to add some bouyancy and at the same time lengthen the hull.
Worked a treat on one of my boatsDSCF7951.jpgDSCF7952.jpg
What could go wrong.......................
Since there is no water in the hull could your original transom have been 25mm core thickness and the new transom 47mm? Itsthe only thing i can think of
Even if old mate was to go with a 10mm skin both sides of transom i cant see that sinking your chines that below the water at the transom
From what I can see the water level at the transom is right at the chines.
What I'm in the process of doing to my 16open since fitting a 90HP Yam4
20200730_085413.jpg
Without a picture it didn't happen.
h Stressless, is that because the arse end was to heavy with the donk?
hi Gazza,
this is a picture when the old transom was cut out showing the thickness. all this was chipped out so the new transom sat behind the fibreglass return. the floor was replaced at the same time with 12mm as he had that in stock at the time. think he said original floor was 8mm. He also beefed up the strength of the motor well floor why he was at it.
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