On 17 October, "Marietta" sailed from Virginia for the Philippines. Steaming via the Suez Canal, she arrived Manila on 3 January 1900. Operating in support of American forces ending the Philippine insurrection, the gunboat acted as a patrol and convoy escort vessel in the Islands, assisting and cooperating with the Army In military expeditions and landings until ordered home on 3 June 1901. Again sailing via Suez, she arrived Boston on 17 September and then proceeded immediately to Portsmouth, New Hampshire reporting to the North Atlantic Squadron.