looks like we may have a leak in our steel bow fresh water tank. Once the tank is emptied ( mostly, it would appear, into the cabin bilge ) what is the best way of sealing the tank to prevent this re-occuring. Boat is currently out being blacked.
how do you know the tank is leaking ? what evidence have you found apart from water in the cabin bilge ? is the tank integral (i.e part of the boat structure) ? is the tank a separate stainless steel tank ? have you checked the outlet pipe from the bottom of the tank, and any valve on this line ? how old is the boat ? (if it is recent and the tank is integral then it is highly unlikely that the steelwork is leaking unless there is a bad bit of welding).
I'm trying to rule out options for water in the cabin bilge. We had a fair bit that we pumped out 2 weeks ago whilst still afloat. While out being blacked, water is still building up in the cabin bilge. We are away at the moment, but one of our friends will be checking the water tank level for us tomorrow. Tank was filled to the brim last Thursday before we were tracktored out for blacking. I am waiting to hear back, with the assumption that if the water tank is no longer full, and there is still water in the cabin bilge, that is likely to be the issue. Tank is integral. No water at the outlet pipe leading to the fresh water pump. Boat is 15 years old. I hope the tank isn't at fault, but need to at least rule it out.
If the tank was leaking, I'd think you'd be able to see evidence of this. I'm assuming that the tank is at the bow, and accumulated water in the bilge is towards the stern. If this is the case I'd expect the area around the tank to be dry, mostly, with a small damp area where the tank is leaking, if it is indeed leaking. Do you have visual access to where the water tank meets the bilge?
If the water tank is leaking, then perhaps the simple answer is one of those plastic tanks to go inside the old steel cavern?
Inside, Badger, as the pressure is in to out (water level higher than canal surface), so will keep the Milliput held against the wall. Gawd, you are so stupid at times.
dear fuxxywuxxy - keep up at the back there you slow old thing - we have not yet established that the tank is leaking.
............. so you recommend Milliput to be applied inside the tank - OK, please submit a procedure to indicate how this will be achieved, to include: - means of access - identification of the area/s to be treated (currently this may be the whole tank according to your suggestion) - surface preparation - purchase of the appropriate material (if it is for the whole tank then it may be cheaper to scrap the boat and start again). - tests to ensure the 'repair' is complete and effective.
please bear in mind that applying epoxy putty to a steel surface may not be a permanent solution, especially if the boat is involved in minor collisions in the area of the water tank in the bow (it may just fall off).