This is good, write more.
The imagery is nice, and the tone seems pretty consistent/flows well.
I am not sure if it should be put into multiple paragraphs. I would say yes, if this is all there is on the page, otherwise if it is just the start of a page, maybe not.
Personally, I can't really offer more feedback as it is a bit too short.
Obviously there is a lot of questions I have about this, like how big the boat you are on is, who the man on the water was, etc.
These things would get answered easily by you writing more.
I should mention that it is nice that you didn't just dump exposition on the reader, and the above questions I mentioned certainly don't need to be answered right off the bat. Heck, it might be better if they are NOT answered right off the bat, it helps keep the reader reading and a whole number of other things.
So as I said, this is good, write more.
Also I like the pace of it. Oh, I should mention that the way you used the first person perspective also seems to work (ie, you aren't starting each sentence with 'I').
If you do write more, do post it, I wouldn't mind reading it.
P.S. I don't know if there are mistakes with grammar/etc, if there are I didn't notice them so hopefully that means it isn't anything major(?).
P.P.S Also, obviously, this is my opinion, so maybe what you wrote is a lot better/worse than I think. What I mean is, don't worry too much about changing everything so it aligns with what I think.
TL;DR
I think it is good, so write more! Can't really comment much more than that.