We had a Corpsman* (HM1) that couldn't handle much motion at all.
The guy would start getting queasy when the command to "single up all lines" went down.
He'd hang out outside the head till we submerged.
Neat thing about that class of submarine. The san tanks (poop tanks) were blown to see with high pressure air. Well, obviously after the tanks were blown the pressurized air in the tanks had to go somewhere. Couldn't vent it overboard as the bubbles would give away the position of the boat so they were vented inboard through charcoal filters. Now that sort of worked to take the edge off the stank it wasn't just real effective.
Now remember our hapless Corpsman hanging out near the head in case he got to barfing.
We would "blow shitters" as soon as we crossed the 12 mile limit while still on the surface just prior to diving.
The charcoal filters were located under a step on the aft side of the forward watertight bulkhead, just outside the head.
So, here had our Corpsman sitting on the step outside the head because he was seasick and the san tanks were vented inboard and BAM, Corpsman gets a face full of poorly filtered pressurized sewage air coming right out of the filters he is effectively sitting on.
Yup, power heaving commenced almost immediately.
This wouldn't have been such a memorable thing except it happened every *expletive deleted*ing time we went to sea while he was onboard.
* I don't refer to him as "Doc" because he never earned that honorific. He left the boat less than a year after reporting aboard, not Qualified in Submarines and minus a stripe.