At the end of the world
(Book)

"Set in the Black tide rising world created by John Ringo."

"CASTAWAYS IN A ZOMBIE PLAGUE. Behold the ketch Crosscurrent Voyager, bound on a senior year summer cruise to adventure and serious fun. Six kids ranging from suburban geeks to street-smart pariahs,and a British captain who rarely smiles. What could go wrong? Zombies. Just days after they leave, a plague starts speading like wildfire, turning most of its survivors into shrieking, cannibalistic rage-monsters. Now the Crosscurrent Voyager becomes these teens' one hope for survival. If they can avoid killing each other in the process of reaching their destination. What's more, their ultimate destination, South Georgia Island, in unable to support permanent habitation. So if the strange crew of the Voyager doesn't come up with an honest-to-goodness workable plan, they are--in every sense--heading straight toward the end of the world."--inside jacket.