Get a rotomolded cooler.
Yes, a rotomolded cooler like Yeti, Pelican, or RTIC is the right choice for a boat. They hold ice far better than standard coolers because the thick plastic construction and foam insulation are molded together — no air gaps, no sweating.
On a boat, you’re dealing with direct sun, heat reflecting off the water, and maybe a long day on the hook. A rotomolded cooler will keep ice for two to three days, while a cheaper cooler will be a lukewarm puddle by noon. Prioritize a model with a drain plug (easier to empty without tipping) and tie-down loops (so it doesn’t slide around or go overboard). Weight matters: bigger rotomolded coolers are heavy even empty, so think about how you’ll move it.
You don’t need the most expensive brand. RTIC and others make nearly identical coolers for less. The key is the rotomolded construction — that’s what makes the difference.
Ice lasting through a full day on the water is worth the extra hundred bucks.
