Abstract
Prognostics and health monitoring (PHM) is an important and growing focus in the design and maintenance of complex systems. It is being applied to a wide range of problems, from industrial machines to avionics systems to batteries. In this paper, we review existing work in the context of a novel application: repair and maintenance of autonomous ocean systems, one example being a fleet of ocean turbines. Various approaches to PHM are considered, including model- and data-driven techniques as well as hybrid strategies.