Definition of careens:
(v) :
(intransitive) To lurch or sway violently from side to side.
(v) :
(intransitive, chiefly US) To move swiftly and in an uncontrolled way.
(v) :
(intransitive, chiefly US) To career, to move rapidly straight ahead, to rush carelessly.
(v) :
(intransitive) To tilt or lean while in motion.
(v) :
(nautical, intransitive) To tilt on one side.
(v) :
(nautical, transitive) To heave a ship down on one side so as to expose the other, in order to clean it of barnacles and weed, or to repair it below the water line.