Now here's something cool.

Song # 86 in Allen's collection is "Shock Along, John." It is also attributed to "Northern slave states." His note just says "A corn-song, of which only the burden is remembered." By "burden" he means "refrain." He gives a full melody, which is in call-response-call-response form. However, he only has words to the refrain:

"Shock along John, shock along" (both times)

This must be "Stormalong"! "shock" suggests "shuck," as in shucking corn. It best fits the form of the chantey Hugill called "Stormalong, Lads, Stormy" (as does the song in THE ARK, IMO).

So...the possibility (this has been discussed before, in light of "come along," "get along" etc) that "Stormalong" is a mondegreen of some command, i.e. "stow" and/or "shuck."