COACHELLA BY THE SEA: Pulp, Hot Chip, Yeasayer, Girl Talk, James Murphy, Sleigh Bells, El-P and Killer Mike, among others, will headline the two inaugural voyages of Goldenvoice’s S.S. Coachella. The rock cruise aboard the luxury ship Celebrity Silhouette will have two different voyages with the same musical line-up, from Ft.Lauderdale to the Bahamas (Dec. 16-19) or Ft. Lauderdale to Jamaica (Dec. 19-23). Reservations can be made beginning this Saturday (7/21) at 10 a.m. PDT with prices starting at $500 per person. Easy payment plans available with only $250 due at time of purchase. Reservations are available at http://ss.coachella.com. Additional details are available at http://www.facebook. (7/17p)