Martin, Jonathan The effect of bridge alarms on watch keeping operations on Ro-Ro ferries in the Irish Sea / Jonathan Martin. - vi, 67 pages : color illustrations ; 30 cm - B.Sc. (Hons) Nautical Science . Includes bibliographical references. Subjects--Topical Terms: Ships--Bridges --Watch-dutyRoll-on/roll-off ships Dewey Class. No.: B.Sc. Nautical Science