Make the box toploading, and use at least 3–4" of good insulation all around. Also, put in a drain to allow you to get rid of ice water melt, but put a valve or a p-trap type bend in it to prevent cold air from flowing down it. If you use a p-trap type seal, make sure it doesn't drain into the bilge, since it will cause an awful stench.
Volume depends on how much storage you need... how long do you typically go out for, and how much food that requires refrigeration do you normally carry.
To size it... buy a weekend's worth of food and take the supplies that need refrigeration and put them in a box. Add about 20% to the size for ice. A cube would be more efficient in terms of space but you'll have to make the shape depending on what space you have available on the boat.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.
—Cpt. Mal Reynolds, Serenity (edited)
If you're new to the Sailnet Forums... please read this To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Still—DON'T READ THAT POST AGAIN.