Are they hardcore for searching cruise boats? and there passengers? fuck we cant take weed anywhere now, a plane is a definite no-no, but everyone should be able to get as high as they want on the open seas!....anyway the dude above me said brownies, sounds like the best idea, other than that you could try a stash can...a realistic one though...like an energy drink one, or water bottle one, or just hide it super good in your luggage...id have better advice but i dont know the exact situation...