The ghost ship appeared for me a couple times last month while I was fishing for the Summer Medleyfaire in New World!
This is just outside First Light, where I like to fish. It’s not super common, but if you just park yourself here and get fishing, you’ll see it eventually. It makes a noise when it appears that’s pretty noticeable, but you probably only have about 10 seconds before it fades away again.
This was the exact moment it appeared for the first time for me. Unsurprisingly, I was fishing!
I really like this type of event. It’s infrequent and doesn’t have a gameplay purpose, so it just adds to the mystery and world in the game. I wish there were more things like this!