Did you try putting salt in the ice? Doesn't it make it colder or something. I got one of those koolerair things last season but I have never used it because I could not find the right cooler for it.

I doubt it's very easy to get but what about dry ice in a sealed container? It suppose to melt faster but maybe a layer of it under the bags/containers of ice will last longer.

Sounds like a lot of trouble for ac, when you could spened a few hundred for portable or 1200 for installed ac

Liquid, where can you get AC installed for $1200? I would do that in a heartbeat but since my boat wasn't ordered with it my dealer quoted me for over 4x's that with adding shore power. They claim the air unit is over $2000 alone.

Steelware,
regarding the bayair a/c, I asked earlier, how does it work and what I meant was..does it work well?

I had visited their web site and am interested if it can keep it cool for more than one or two hours. Thanks for your help.

It works really well. We can stay on the boat overnight in the summer without the ice running out. We usually freeze one gallon freezer bags solid and use those. I have a 24 quart cooler that we use.

I meant permenant, installed yorself, not including shore power. There is a place www.oceanbreezeac.com 9,000 btu with digital therma. for 1399 with every thing

This is a pic of the inside view of our portable....