ShipRocked already had a killer lineup for 2018, and now a new batch of acts have been added to the bill for the early year cruise. P.O.D., Otherwise, Like a Storm, Adelitas Way and the Letter Black are the new additions to the cruise.

They join previously announced ShipRocked acts Stone Sour, Seether, In This Moment, Black Label Society, Nothing More, Starset, Beartooth, Red Sun Rising, Shaman's Harvest, Aranda, Badflower, ded, He Is Legend, Royal Republic, Palisades, Doll Skin, Kaleido and the all-star outfit the Stowaways.

Who exactly are the Stowaways? They're a group of ShipRocked performers featuring members of a variety acts who come together to rock and bring everyone a great time. Among the Stowaways revealed so far include Fuel's Phil Buckman, Drowning Pool's Joey Duenas and CJ Pierce, Godsmack's Shannon Larkin, Facelift's Brendan Maier, Disturbed's John Moyer, Papa Roach's Tony Palermo, Erin Porter, Lukas Rossi, Art of Anarchy's Ron "Bumblefoot" Thal and Sevendust's Lajon Witherspoon.

ShipRocked 2018 sets sail aboard the Carnival Liberty from Port Canaveral, Fla., on Jan. 21. From there, the ship ventures to Nassau and the private island of Half Moon Cay in the Bahamas, eventually returning to port in Florida on Jan. 25. Those attending will get to take part in meet-and-greets, enjoy artist-hosted events, can participate in crazy theme nights and after hours parties and, of course, get to check out a whole ship-load of music. At present, only 20 staterooms remain, so head to the ShipRocked website to make sure you don't miss out.

Shiprocked 2018 Lineup

ShipRocked 2018

Shiprocked 2018 Stowaways Performers

ShipRocked 2018

2017 Hard Rock + Metal Festival Guide