That’s how it is done on fishing boats and in Mexico.
```
Mexico yes but not on any fishing boat I eve worked on or heard about.
When I worked at the shipyard in the 60s we worked on a Greek ship that had what looked like a 2x12 about 20 feet long with holes cut in it on each side of the ship. They said that when at sea, when one of the crew had to take a crap that is where the did it.