These benefits include a unique aquot;hammeraquot; circuit, adjustable pilot arc, special circuit saves chucks, automatic shut off ... The Revenge 25 offers the largest stern - drive engine available on any Whaler, 260 hp, with a choice of MerCruiser or OMC units. ... Both boats get extensive range from their 140-gallon fuel tanks, and hydraulic steering makes them easy to handle. ... Ample space is provided around the console for mounting a chart recorder and other navigational electronics.