Random idea I had when I saw the swan-shaped training toilets in Digimon World Next Order.

Every wanted to sail the seven seas but worried about where you'll take a potty break? Worry no more, we have Swan Diapers! Go for a swim and worry not one bit about any sort of unfortunate accident. But wait, there's more! For those interested in padded piracy, you can keep your prisoners in the diaper's brig! You can decorate with your treasure! Arrr!