Jana Kramer is one of the many A-list country acts that set sail last week on the Blake Shelton Cruise to San Juan, St. Thomas, Tortola and Nassau…

But the newcomer reveals to CMT cruises make her a little motion sick.

“I’ve never done a cruise before because I’m really claustrophobic,” she says. “I was like, “˜You know what? I’m getting over a fear and hanging with some of my buddies on a boat.’ I get to bring my mom. It’s going to be awesome. I can’t wait to play and then meet people and hang out, go swimming and tan!”

In addition to Blake and Jana, Trace Adkins, Lee Brice, Randy Houser, Jerrod Niemann and more are also on board.

The cruise set sail this weekend and wraps later this week.