Well, the chord positions are shifting already and the chorus has a significant word change from "wind" to "ship" which makes better sense to me (copy and paste into WORD/TIMES/12 to line up chords):
G---------------------------F------------------C---------------G Have you ever stood the midwatch in the cavern of the night, ---------------------------------F--------------G------F/G With the sea wolves racing past you in a pack; ---------------------------F---------------------C-----------------G With the steely stars a-playing 'round the mastheads for a light, ----------F-------------------------------------------G-----F/G And the bucking trades disposed to drive you back? ------------F--------------------------G-----------F-----G Have you ever seen a sunset on a copper col-ored sea, ------------F--------------------------------------G When the sky was like a polished compass bowl; --------------------------------------F--------------------C----------------------G And the night winds caught the spindrift from the waves and tossed it free – -------F-------------------------------------G-------F/G Till to leeward you could see a silvery shoal?
Chorus:
G-------F-----------------------------------------G-----------------F--G For the wind has shifted eastward, and the long green roll-ers call, -------F---------------------------------------------G----F/G And a brown-skinned lass beckons there for me; ----------------------------F-------------------C---------------G The starboard watch is yarning, and I'm longing for it all – -----F-------------------------------G------F/G For any ship to take me back to sea.