Aboard Del Viento, our Fuji 40, the icebox is refrigerated using an old 12-volt Adler Barbour Cold Machine. For a long time, we've been frustrated trying to make ice within the small cubic space bound by the vertical evaporator. The proprietary vertical ice trays retail for about $60. We tried small conventional trays, but they're awkward to position, they're prone to spill while we're under way, and we couldn't set anything on top of them. Covered trays allowed us to set items on top, but they still leaked from under the lids if we pitched or heeled before the water froze.