The edition is 1997, vol. II (It only goes to the letter "o" at this time - the third volume is yet to come.)
However, this edition does also make mention of the "barge" context to which you refer:
Calif. a kind o barge. Now hist.
1870 In Whall Sea Songs 94: Oh, the hog-ey men are all the go,/Wehn they come down to San Francisco. 1925 Baily Shanghaied 39 [ref. to 1898] kSenn was trying to make his getaway by the last hog-eye (barge). 1910-27 Whall Sea Songs 93 [ref to a 1872] [around San Francisco] there was a great business carried on by water, the chief vehicles being barges, called "hog-eyes." The derivation of the name is unknown to me.