I had the opportunity at lunch today to watch one of our boats getting treated to a bottom blasting with dry ice. I had heard this was going to be done to one of the steel hulled powerboats, but had never heard of it before. The theory is that the drastic change in temp cause the paint to fall off?? Or some such thing. I was going to take a picture but it was raining too hard.

The helper runs the compressor and dumps buckets of dry ice into a hopper. The blaster was under the boat in a huge cloud of CO2 vapor.

the boat here was taking on 50+ gallons of water per day, so was hauled for the season last weekend. The owner found a US Navy paint that is supposed to seal all the pin holes with two coats, guaranteed for two years.