Built by the US Navy after the island was occupied on June 2, 1944. Construction was begun by PT Advance Base 2, commanded by Lt. Commander Herman F. Straw, arriving June 6. The newly formed PT Advance Base Construction Detachment of the 113th Naval Construction Battalion (Seabees) commanded by Lt. Harold F. Liberty built the base, with a contingent of 2 officers and 55 enlisted men.
In record time, piers and base facilities were constructed. By late June, Liberty Ships with Base 21 arrived and repair facilities were added. Mios Woendi became the largest PT Boat base in New Guinea, with a water evaporator and tower, torpedo dump and PT Boat anchorage area.
PT Boats based at Mios Woendi
The first enemy action was June 12, when PT 326 departed for Biak, and was attacked by four Japanese aircraft within sight of Mios Woendi and dropped bombs. One aircraft was shot down, and the other planes attacked USS Kalk, but suffered a direct hit and claimed another shot down. PT Boats from the base rushed to the Kalk to remove the wounded and offer aid. That night, PT 190 and PT 146 claimed three barges sunk on the north coast of Biak.
During June, PT Boats from the base claimed 7 barges destroyed at Biak, 3 off Noemfoor and 3 near Manokwari. Also, patrolled eastward to Wakde, but these patrols proved unproductive. USN Catalinas and later RAAF Beauforts and Beaufighters assisted with searches, spotting targets during daytime hours.
On July 9, USS Oyster Bay, USS Portunus and USS Hilo moved to Mios Woendi to support PT Boat operations. PT Boats attempted to continuously patrol Korim Bay on the north coast of Biak. Also, worked with friendly natives to locate and attack concentrations of troops on shore. During July, PT Boats claimed 16 barges.
During August, PT Boats from the base claimed 26 barges destroyed. By September, operations were tapering off and only 8 barges were claimed, and 133 patrols conducted during July - August. During September - November, former prisoners of the Japanese including Javanese, Formosans and Indians were liberated and evacuated when reported by locals. During October - November 782 were evacuated aboard PT Boats.
On November 4, 1944 PT-301 was heavily damaged by an accidental explosion and was scrapped. Combat patrols from Mios Woendi ended on November 16.
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