Abstract
A large-scale wave-power station will have a number of devices in relatively close proximity to each other. Consequently, there will be hydrodynamic interactions between neighbouring devices which may modify significantly the power absorption characteristics of a given device relative to its performance in isolation. In this paper a brief review is given of existing theory concerned with rigid-body device arrays and some new calculations presented for arrays able to absorb power through heave or surge motions. Among the points considered are the improvement of performance from the unequal spacing of devices and the effects of constraining the amplitudes of device motions.