Sure, that's another good way. There are also pop rivets ("cherrymax"
rivets) that are watertight just like the ones they use on aircraft hulls.
With the right drill bit size, correct size rivet and a rivet installation
tool the work could be accomplished real fast, even faster than my first
suggested process. :-)

"Andrew Butchart" wrote in message
...
| There are plugs available in plumbing supply shops for patching pressure
| tanks. The consist of a bolt and steel/rubber washer. The bolt has an
| "arrow head" on it that you drive through the hole, give a 90 degree turn
| and then tighten down. I had one on my pressure tank to fix a small hole
| for 15 years until the tank rusted through in another spot.
|
| Andrew B
|
| --
| Andrew Butchart
|
| "P D Fritz" wrote in message
| ...
|
|
| Since it is just a very small hole (less than 1/8 of an inch) in mild
| steel
| hull you can just drill it out with an appropriate size drill bit and
tap
| it
| to be able to screw in the correct size threaded bolt/screw to use as a
| plug. You have to make sure though before starting that you have all the
| necessary tools (drill bit, correct tap with wrench and correct size
| plugging screw) on hand since you have to accomplish the repair process
| quickly to avoid getting in too much water. After you install the
plugging
| screw it's pretty much almost like a permanent repair and you can even
| weld
| it in place if you want.
|
| wrote in message
|
...
| Hi all,
| No rush for answers on this one, but I'm sinking... I found a bit
| of water in the bilges and put it down to something benign, but on
| inspection, found a blister on the paint inside the hull, which when I
| burst revealed a ~2mm square hole in the hull on the bottom of the
| boat. I've plugged it with gaffer tape, rubber mats and bits of wood
| for now, but has anyone got any neat ways of fixing this without
| taking it out of the water (boat is a 20 tonne wrought iron/mild steel
| dutch barge, and a proper repair job would be ~£700)?
| I'm thinking a bolt with a big rubber washer on both sides and
| liberal use of silicon sealant. I'm hoping the rot is very localised.
|
| cheers
|
| Jim
| UK
|
|
|
|