I'm getting into boat-sailing, and I'm saddened by the nausea it causes. I'm looking into ways to reduce this, and I'm thinking ways to deal with motion sickness incurred in VR-games is probably applicable to me.
Nausea at sea is definitely something that typically goes away at least after a couple of days at sea. You get "sea legs". But if you're having it more as a now and then hobby I'm not sure but I recon that there's a long term training element in it as well.
Interestingly, it's the same when you go into space. Around half the people experience it and there doesn't seem to be a link between people who get motion sick and those who get space sick. Symptoms can be mild to relatively severe but people tend to adjust after a few days.