The Type 45 Anti-Air Warfare Destroyer will provide air defence cover for the Royal Navy and will replace the Type 42 destroyers in service. The deep displacement is circa 7350t with a length of 152.4m and a beam of 21.2m. The water lubricated shaft bearings comprise the Main 'A' Bracket bearings and Intermediate bearings. Port and starboard shafts are of different lengths. Because the shaft loading geometry has a large variance between the cold (static) condition and the warm (MCR) condition together with the length of the 'A' Bracket Barrel a computer program was developed to assess the bearing loading under both conditions.
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