Gerald Doyle noted that this song: "was called after the author who wrote it in the year 1756. Thousands of fishermen may remember hearing short snatches of the song, but it is doubtful if a dozen Newfoundlanders can recite it as it is recorded here. It was placed on record in the Admiralty's Court in London, and was considered the best coasting guide for that part of our Island home to which it refers."
An earlier variant was printed in 1905 on pp.22-24 of Murphy's Sealers' Song Book, in 1925 on pp.15-16 of Songs Sung By Old Time Sealers Of Many Years Ago, and in 1923 on p.14-15 of Songs Their Fathers Sung, For Fishermen: Old Time Ditties; all three were published in St. John's by James Murphy [1867-1931], who noted the following:
¹ Stinking Isles - Cabot Isles.
² a sunken rock - Dean's Rock.
³ house on Syme's Isle - no longer standing.
From the Encyclopedia of Newfoundland and Labrador, volume 3, p.668, 1991, Harry Cuff Publications Ltd., St. John's, NL:
"Unfortunately, musical notation was not provided with the text and there is no information pertaining to the actual tune."
From the CSU Fresno Ballad Index: Wadham's Song - According to GEST Songs of Newfoundland and Labrador site, "Although called a song it was always recited and there is no tune available"; Greenleaf/Mansfield heard it recited. On the other hand, the Renaissance Dance site claims "Pilot verses were sailing directions sung to popular tunes ... Hugill [apparently not in Shanties from the Seven Seas] quotes [Wadham's Song] to the tune of I'll Tell Me Ma, which is still well known."
From the Dictionary Of Newfoundland English: Stage - elevated platform on the shore with working tables, sheds, etc, where fish are landed and processed for salting and drying, and fishing gear and supplies are stored; fishing stage.
The YouTube video above features an excellent 12-string guitar performance of a variant by Tony Archibald from Port St. Mary on the Isle of Man.