Former Baywatch and Knight Rider actor David Hasselhoff will be captaining the third edition of It's The Ship, one of South-east Asia's biggest dance music festivals, which is held on a sea vessel.

But the captain will not be taking to the decks on board the Royal Caribbean international cruise liner.

Instead, he will make announcements on the ship, host a gala dinner night as well as make appearances at various activities.

This year's headlining acts on the booze cruise include Australian electronic dance music act Knife Party, Moldovan producer and DJ Andrew Rayel and Swedish duo Dada Life.

Held over four days and three nights from Nov 4 to 7, the event will feature more than 60 acts at multiple stages on the ship. The ship sets sail from Singapore and the port of call this year will be in Penang.

It's The Ship will take place on a 15-deck cruise liner, one of the world's largest, which features a casino, a rock-climbing wall that overlooks the sea, a full-sized basketball court, an ice-skating rink, a mini-golf course, a duty-free shopping promenade and 17 bars, clubs and lounges.

Last year's edition, which saw the likes of Kaskade, Showtek and Ferry Corsten headlining it, was a sold-out affair with more than 3,800 fans from 50 countries in attendance.

Tickets for It's The Ship went on sale in March at www.itstheship.com. Cabins are priced between US$588 (S$794, excluding taxes and fees) a person, for a four-person interior cabin, and US$5,888, for a two-person royal suite with balcony cabin.