Eric Newby is the man.
After his apprenticeship at the end of the clipper era, and being torpedoed in his 3 masted last berth, "The Last Grain Race" he also writes about travel. Not the modern travel writing about how busy the airport is, and where you can connect to the internet - but the sort where you are on your own, on your feet, and in peril. "A Short Walk in the Hindu Kush". His account of tall ship sailing is authentic, and focused on the sailing, unlike Forester, or O'Brian who are writing a story, and involving the ship details. (though I enjoyed the books)
Then there is "Two Years Before the Mast" by Richard Henry Dana, another book written by a seaman, about the sailing and the treatment on board (1840's)
Or for another authentic story Joshua Slocum's narrative of building himself a sailing boat and then single-handedly sailing her around the world. "Sailing Alone Around the World" I found the trivial detail of him building his own boat, which is a bit glossed over, as amazing as his circumnavigation.
Coxswain Jim