Spoke with you in discord and helped you find the missing pokes that were in your box. Locking this thread as solved, and if you have more doubts feel free to ask. Hope you have a great week!
Try closing out your client completely with the red "x"in the top right, then log back in and interact with the sailor again. If this does not work, try pressing f2 and then type clearmaps into the console. Then close your client and try interacting with the npc.
Hey there! The issue with the disappearing sailors has been fixed by Thor.
If it persists, close out your client completely, and then re-open it.
Thanks for reporting, and I hope you have a great day!