In December, the S.S. Coachella will put out from port (“pull out from port?” We’re not exactly sailors over here) in Ft. Lauderdale for two voyages which will take the famous music festival to the high seas. The line-up was announced yesterday, and if you manage to get your hands on some tickets, you better pack your dancing shoes. Pulp, Yeasayer, Hot Chip, Sleigh Bells and James Murphy lead the charge—all acts capable of inciting crowds into foot stomping, shoulder-shimmying frenzies. Ought to keep everyone on the whole ship dancing from the starboard side to …well, the other side. Again, not sailors …