Cleanliness of one's charter boat showers is largely up to < guess who>. How much water needed for a shower is also up to the same < guess who>, but I've never been on a charter boat that had no hot water. I've showered at Marina Cay, at Leverick, at Conch Base, Fat Hog's Bay and first 2 charters ever, at Red Hook, but frankly, I'd rather stay on the boat where my clothes, towels and toiletries reside than schlep from Boat to Bath House and back. YMMV.