Fuel tank leak

Maybe cut top tank in situ then use old tank as a pattern for new but slightly lower.
Might be an after market for smaller tanks

Exactly what I could do. Chop the leaky tank out in tiny bits and hurl them in the river. Make up a mock up tank slightly smaller and check it can easily slide and out, then fabricate new one.
 
Exactly what I could do. Chop the leaky tank out in tiny bits and hurl them in the river. Make up a mock up tank slightly smaller and check it can easily slide and out, then fabricate new one.

you don’t even need to cut it into tiny bits. Chop a man size hole in the front of it then sit it in and chop it in half.

then slide the top half out followed by the bottom.
 
When we get the quote (and possibly a letter stating the likely cause) I will start looking at insurance or the manufacturer
We know what it's going to cost - €thousands !

I think I'd be reading the policy and notifying them in case they want to appoint a loss adjuster / surveyor / get alternative quotes, etc. You don't want even more delay do you?
 
We know what it's going to cost - €thousands !

I think I'd be reading the policy and notifying them in case they want to appoint a loss adjuster / surveyor / get alternative quotes, etc. You don't want even more delay do you?
They can send adjusters if they want but it’s not practical to take the boat from door to door...this yard are Beneteau dealers and without their diagnosis we don’t have a story to take to the insurance company...in theory I didn’t really know where the leak was from until they took the boat apart
 
I know it has probably been mentioned in the 900+ posts but can you remind me of the make/model of the boat we are talking about
 
It can’t be only a hole at the base other wise it would have emptied .You say you dropped the level to determine the level earlier ?
Bin it and get the yard to fit a tank properly.On custom beds , strapped down with visible access all round .
A proper tank with a drain able sump , sight glass ( cocked ) .

As it is it’s too tight , it getting hull flex forces and stress cracking .
I can’t see any yellow / green Earth wires in any pics thus far btw .It ought to be connected to an anode on the outside of the hull .

I would buy a off the shelf glass fibre tank or polymer and retro fit it .

Leave the engine beds because chopping them = entering shaft alignment issues = another thread from Bouba “ my boat vibrates “;
Infact re glass them Fwds to strengthen the thing !plonk a simple rectangular tank back on with min angles / welds / seams etc .KISS shape wise .
My 4 ( twin engined ) bearers run stern to bow the full L of the hull .
 
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