Leak

[Rob Spicer]

We have an annoying leak that proving hard to track down
When on the mooring the yacht is dry , not a drop of water in the bilges , under motor the boat is also dry
But when under sail we have water coming in .
It must be coming in from an above water fitting but so far it proving very hard to track down

 

[Benjamin Disralei]

LEAK

Lets nail this thing

Can you determine if the leak is on a particular tack, port or starboard, is the water forward or aft and if you sail in the brine does it taste is it salty...?

Don't get excited, I have no idea but am sure the geniuses out there will be able to help with a little more info.

 

[Rob Spicer]

LEAK

Lets nail this thing

Can you determine if the leak is on a particular tack, port or starboard, is the water forward or aft and if you sail in the brine does it taste is it salty...?

Don't get excited, I have no idea but am sure the geniuses out there will be able to help with a little more info.

The water seems to fill the centre bilge , not sure if it happens on both tacks or not , could water run back through the bilge pumps , manual or electric.

 

[Benjamin Disralei]

spicerr

Very much doubt that the water would return from the bilge pump however have been known once to be wrong. how much water are we talking about, I know this may be hard to quantify but are we talking much from say half a day's sailing...?

 

[Captn TJ]

I would shut off the all seacocks except for engine and propshaft for your next sail. Had a problem on my 381 with one of my drain lines leaking

The other thing to remember is that it takes a while for water to migrate out of the grid system and into the bilge. So you may have water coming in from topsides at anchor/dock and is flowing into the grid. Then it doesn't get into bilge until there is pitching and rolling from being under sail.

 

[Rob Spicer]

spicerr

Very much doubt that the water would return from the bilge pump however have been known once to be wrong. how much water are we talking about, I know this may be hard to quantify but are we talking much from say half a day's sailing...?

Approx 5 Lts in 1hours while sailing in heavy seas

 

[Rob Spicer]

I would shut off the all seacocks except for engine and propshaft for your next sail. Had a problem on my 381 with one of my drain lines leaking

The other thing to remember is that it takes a while for water to migrate out of the grid system and into the bilge. So you may have water coming in from topsides at anchor/dock and is flowing into the grid. Then it doesn't get into bilge until there is pitching and rolling from being under sail.

Thanks Captn TJ , something to look at

 

[Philip_Oceanis 361]

The water seems to fill the centre bilge , not sure if it happens on both tacks or not , could water run back through the bilge pumps , manual or electric.

Stick a water hose in the fitting, turn the tap and see if there is water coming to the bildge. I don't know what prevents water returning back from the bildge pump hose. Is it the pump? I say this because in the past there was always some water coming back to the bildge fter using the pump (the water stuck in the hose i guess) until i installed a non-return valve right after the pump. Problem solved.

 

[Rob Spicer]

Stick a water hose in the fitting, turn the tap and see if there is water coming to the bildge. I don't know what prevents water returning back from the bildge pump hose. Is it the pump? I say this because in the past there was always some water coming back to the bildge fter using the pump (the water stuck in the hose i guess) until i installed a non-return valve right after the pump. Problem solved.

Thank you , I think it might be worth fitting non-return valves as you suggested any way , I will try the hose in the skin fitting and see how we go

 

[Rob Spicer]

Afternoon All , just letting you know that the leak has been located.
The bulkhead between the anchor well and the cabin had come away from the hull in one small place , hence only leaking when under sail .
Thank you all for myour help