%0 Journal Article %A Okazaki, Tadatsugi %T Case Study on the Unavailability of a Ship Propulsion System under Aging Effects and Maintenance %J TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation %V 10 %N 3 %P 501-508 %D 2016 %U ./Article_Case_Study_on_the_Unavailability_Okazaki,39,673.html %X Unavailability of a ship propulsion system under aging effects and proper maintenance is estimated using GO-FLOW. GO-FLOW is an effective software tool for the unavailability analysis of complex systems. Aging effects are incorporated into GO-FLOW using a time-dependent technique and assuming a linear aging model. The results show that the aging effects and improper maintenance can potentially increase the frequency of accidents due to a malfunction of the propulsion system by a factor of three. %@ 2083-6473 %R 10.12716/1001.10.03.16