Abstract :
Records of reliability and maintenance of radar equipment on a specified group of ships (deep-sea trawlers) operating from a specified port under controlled conditions are presented. The reasons for the very long `mean-time-between-failures¿ under these conditions are considered to be: (a) the equipment is not switched on and off but allowed to run for a long time; (b) the operators have been given training on the maintenance of this particular set; (c) the spares provisioning is at a high level, and (d) a rigid system of preventive maintenance is applied. All these factors are considered to be significant in achieving high reliability.
