this post should be closed now because its sure to take the regular "small boat offshore" spin.
Good luck. I learned something today about sourcing ice.
Love the barn. Back with the ice.... (see how Im cleverly taking this post off on a different tack)...
I'm amazed how many people fish in the summer and dont take enough ice. My favorite was the headboats that sold burlap bags to stuff the fares bluefish in in summer. Nothing better than some tasty old bluefish caught at 9 am and put in a dry burlap bag with the sun on it all day.
Anyway take the ice. You can always throw it in the ocean, but you cant go back and get more. One of the Super Canyon charter boats had an article a while back about ice for offshore fishing. Was it the CR?
A tuna out of warm water will melt a fair amount of ice while cooling down. Thats a good thermodynamics problem. Ok, lets say you are taking your 40 ft sportfisher offshore and you have three guys.
You can only keep (legally) nine Yellowfin and there is a good chunk bite going on in the hundred square. The fish are almost all cookie cutter 60 lb fish. The water temp is 70 degree F. you want to get the fish down to near freezing packed in ice. How much ice do you need?
Lets say they are 50 lbs after you gut them. So you need to get 450 lbs of fish from 70 degrees F down to (say) 34 degrees F.
How much ice do you need?
The first answer is I have no clue. a lot. One lb of ice per one lb of fish means you need 450 lbs of ice? What if you were in the super center console, did you take three full coolers full of ice? I suppose you could take the quarters off the fish soon after catching, and chilling that, but warm fish doesnt cut so well.
Well its too late to start figuring out heat transfer stuff and besides you 'd have to have some specifics about tuna flesh and tuna as a whole, and know about the heat of fusion for water is 80 calories per gram, and convert the ice from lbs to grams and then convert the F to celcius...
But a big full up charter boat, well they'd need a lot of ice. Not that they will always catch the limit tuna, but if its a 24 hr trip and the party does do well, and form some reason really need to bring home 24 tuna (lets call them 75 lbers) and you do need one lb of ice for one lb of fish, then they carry out 24*75 or 1800 lbs of ice.
Doesnt seem practical.
going to sleep......