Electric ROV's are making inroads into the hydraulic ROV market as they prove themselves to be powerful, reliable, lighter and smaller. This can be crucial where deck space is at a premium. In making comparisons it is useful to think of one mechanical or hydraulic horsepower as being equal to 745.699872 watts. Thus 74.5kW = 100HP. The largest Saab Seaeye ROV is the Jaguar and is equivalent to 125HP.