Nice find, goodman.
I have to wonder is JFK the Keystone?
When I saw that photo I did a search.
Here's what my research uncovered:
Where we go one, we go all. White Squall Bell
Sometimes it's difficult to separate facts, honest mistakes, and trolling.
I don't know who made this original connection and meme and I don't know what their motives were.
Was it an honest mistake or trolling? Were they fooled by someone's honest mistake or where they taken in by a troll?
I did some more digging before I added that attribution for the source of the quotation to the Lexicon and there were two Presidential yachts. The first was President Roosevelt's "Sequoia," a fancied up WWI mine sweeper, which JFK had renamed to "Honey Fitz" after his Grandfather. It would be renamed several times in its later presidential use history, by Truman, Eisenhower, and finally Nixon. . . but it really was not JFK's personal yacht. It belonged to the US Government. It was found rotting and partially sunk, away about ten years ago (If I recall correctly in Sausalito, CA), and was towed to Stockton, CA, where it was restored to the FDR era "Sequoia" style and is now privately owned with the intent to use it as a floating touring museum.
The one that JFK actually owned was a racing yacht built in 1936-1937, designed to win the Chicago to Mackinac Island "Mac" race, which it promptly did in 1938. JFK named it the "Manitou." It is this 62 foot, 13' 9" beam, racing sail boat that comparing photos and woodwork in photos, deck curvatures, that apparently had the bell with the quotation on it.
These were the only two yachts associated with President Kennedy, and the Manitou was the only one he actually owned.