Floyd Raser
N/A
I first heard the term "dipping the eye" when I was a 12-year old sea cadet, courtesy of our seamanship instructor, who had served in the RN during WW2.
It also appears in both my well-thumbed copies of "Seaman's Pocket Book" and "The Admiralty Manual of Seamanship (Vol 1)" (both UK publications dating from 1964 and 1972 respectively).
Later, the bosun of TS Royalist gave us a very practical demonstration of "dipping the eye" and the problems caused if it isn't done (one of which was that you got called a ****ing **** by a very shouty beardy bloke), in situations where you can't just pull the boat in and slacken the line a little.
During my short spell in the merchant navy, the older hands taught us newbies, including - wait for it - "dipping the eye".
During my somewhat longer career in the RN, I personally saw the technique and heard the term used by all ranks and rates in more than a dozen different ships.
To the best of my knowledge, not a single one of them was American.
Converse to what you say, I believe it's a question of technique, not language. The size of boats that most of us have, we yachties can get away without needing to do it: if there's a snakes' wedding on a shared cleat / bollard, we can heave in a bit of slack while we untangle it. Hence the knowledge and practice has fallen into disuse in smaller craft. However, once you get above the size where one man can hold the boat in (say about 15 tons), then"dipping the eye" becomes an essential part of seamanship.
Very interesting but I disagree in that I believe it to be a language thing, partly explained by your own post:
It's starting to sound like a professional sailor's term (which I guess we all suspected from the start) and has probably fallen out of use with the end of national service and the gradual reduction in number of Navy personnel over the years. Your shouty beardy bloke would probably be horrified to know that it's possible to learn a lot about sailing technique from Youtube! My point is that the Navy has less influence over sailing as more of us with spare cash can learn how to sail without it.