If you’re looking to get weird and get down, you’ll want to check out this weekend’s Ghost Ship: The Abyss, an extravagant Halloween-themed rave that is put on by the same Bay Area groups that organize art cars and installations at Burning Man. Now in its sixth year, Ghost Ship has relocated from Treasure Island to a new location (Pier 70, Building 12, 420 22nd St., San Francisco) and will feature popular local DJs instead of a main headlining act. Four stages will showcase a range of styles by DJs such as Pleasuremaker and Senor Ortiz, the hosts of the Thursday-night Afrolicious party at the Elbo Room; Matt Haze, who spins styles such as Israeli dancehall and Ukrainian hip-hop; and Zach Moore, a house-music fiend. Participants come dressed in outlandish, elaborate costumes and there are also one-night-only art installations on display: Past years have included a Victorian-era-style ghost ship, an alien space craft, and a Viking ship — all built to scale. Come for the music, stay for the massive art party. People will be raging long after 3 a.m.