A plausible, but false interpretation of the song is that it is about Sir Francis Drake's voyage on the west coast of America. Drake did sail once with 73 sailors, and he sailed in the vicinity of San Francisco. Drake's ship was considered "mysterious" because of its opulence, funded by seizures from Spanish ships. (Kelly - Warner Robins, GA)

They say the lyricist was told their group needed another song for the album and he wrote it right there on the spot.