What is a bulgine??

"Clear away the Track and let the Bulgine Run" The song is obviously (he said with such surety - yo ho) a square-rigger sail hauling song. But the Judy Collins {?} lyrics of the 1960s indicated "off to Greenland for to catch the whale". The Digitrad Lyrics appear more involved in freighting than whaling. Does this song have UK roots? And pray tell what IS a Bulgine???