fill it with water and see if any leaks out.How do you check it's water tight?
And if it doesn't, he'll have to drill more holes to drain the water againfill it with water and see if any leaks out.
if you can get the water in , theres a hole big enough to suck it out again ,,, lolAnd if it doesn't, he'll have to drill more holes to drain the water again
Seriously, it would be worth welding in a threaded bush with a drain plug for the future. Since you are down there with your tools anyway. In addition to pumps and forced ventilation in the keels. When a potential buyer commisions a survey, the surveyor will comment very favourably on such seamanlike precautions.
if you can get the water in , theres a hole big enough to suck it out again ,,, lol
dont overthink it.You'd need to exceed the pressure equivalent to when the boat is in the water which would mean filling it beyond the waterline. I was wondering whether there was another method using a heavy gas and detector or similar. I;m guessing in practice it's not too much of an issue.
The head pressure when in the water would be minimal, if there is no hole there wouldn’t be enough pressure to cause a leak.You'd need to exceed the pressure equivalent to when the boat is in the water which would mean filling it beyond the waterline. I was wondering whether there was another method using a heavy gas and detector or similar. I;m guessing in practice it's not too much of an issue.
and if it was a pin prick porosity type hole , the rust would block it in a day or two , or the paint over the weld would seal it ,The head pressure when in the water would be minimal, if there is no hole there wouldn’t be enough pressure to cause a leak.
if you can get the water in , theres a hole big enough to suck it out again ,,, lol
then leave a bit of bradford hose in place to hand pump it out once in a while , from inside the boat , Im not a fan of drilling holes below the waterline , again depends if you have access to the top of the bilge keels from inside or not , but Id rather drill a hole and put a brass bung on the inside and bail it once in a while. Hard to know without looking from the inside of the boat really.
what ? the brass on my last boat was still gleaming , and that was nearly 100 years after it was built.Brass wont last long if in salt water.
what ? the brass on my last boat was still gleaming , and that was nearly 100 years after it was built.
and lots of polishing of course.