The Maratha Empire also developed a potent coastal navy circa 1660s. At its peak under Maratha Koli Admiral Kanhoji Angre, the naval force dominated the territorial waters of the western coast of India from Mumbai to Sawantwadi. It would engage in attacking the British, Portuguese, Dutch, and Siddi Naval ships and kept a check on their naval ambitions. The Maratha Navy dominated until around the 1730s, and was in a state of decline by the 1770s, and ceased to exist by 1818.