Originally Posted by hrsail920
Anyone use dry ice, advantages, etc?
Dry ice keeps things frozen, water
ice keeps things cool(refrigerated). Dry Ice releases CO2 which is heavier than air and can accumulate below decks, especially in a buttoned up boat. It can become toxic, but will trigger the feeling of not getting enough air well before it becomes life threatening. I have used dry ice before but I always kept the cooler on deck
. If your "ice box" has a way to drain the CO2 overboard
such as a meltwater drain that goes overboard
and not into the bilge
It should not be a problem. As Tellie says, it's good for short trips, but is difficult to obtain for long term cruising
. I had an 8lb block in a large "5 day"cooler covered with water
ice and it was 7 days before the water ice began to melt. The combo lasted about 12 days. It might have gone a bit longer if I had used block water ice instead of cubes. Everything in the cooler was frozen rock hard until the dry ice had disappeared. I made the mistake of putting a couple of sodas in the cooler to chill them quickly and waited too long to pull them out. They froze solid and split open in just a little over an hour.