On the morning of June 29, 2003, the general cargo vessel JAMBO grounded off the Summer Islands on the west coast of Scotland. The primary cause of the grounding and subsequent total loss of the ship was that the chief officer on watch fell asleep and missed his intended change of course. He was awakened by the grounding. The root cause of the casualty was extreme fatigue - the result of a long period of standing six-on, six-off watches combined with cargo loading/unloading duties when the ship was in port. Unfortunately, this type casualty is not rare. Marine casualties in U.S. a) Grounding of the passenger car-ferry A. b) Collision between the USS RICHARD L. e) Grounding of the passenger ship STAR PRINCESS on Poundstone Rock, Lynn Canal, Alaska on June 23, 1995.