Leisurely reefer (4)

I haven't cracked this one yet — but the brilliant team at Times for the Times have:

and now we come to the end, and the one I am unable to explain. Since it is a two word clue it is most likely a double definition but I can’t seem to work out the link.  Easy can mean to stop rowing, so there could be a marine connection. I thought maybe EASY was a slang for pot, but can’t seem to confirm that.  Any help, I’m on all fours here… And help came in the comments – reefer can mean midshipman, and there is a Midshipman EASY from an 1836 novel and a 1935 movie. Can’t believe it wasn’t on the tip of my tongue.