Depends on where you're at out upon the briny. If you're near a shipping lane you'll probably be picked up by a merchant ship. And I mean a steamship shipping lane offshore. Which may not exactly be close to your sailing route even though you and the merchant ship may well have the same general destination. Warships and fishing vessels tend to be found more close to shore, the latter depending on the size of the continental shelf. And they tend to spend a lot of time in port as well so you're not as likely to see one or, rather, a fleet. Chances are it'll be a merchantman or a deep sea fisherman who answers your call.
“Scientists are people who build the Brooklyn Bridge and then buy it.”
Wm. F. Buckley, Jr.