5° 35' 60S Long 148° 0' 0E Umboi Island is located in the Vitiaz Strait and Dampier Strait to the east. To the west is West New Britain and to the northeast is Sakar Island. To the southeast is the Huon Peninsula on New Guinea. Also known as "Rook Island" or "Rooke Island" in some wartime references. Today, located in Siassi District, Morobe Province.
In early February, 1944, B Company, 1st Battalion,
1st Marines reconnoitered Umboi (Rooke) Island.
During 1943, occupied by five hundred troops from the Japanese Army 51st Reconnaissance
Regiment, commanded by Col. Jiro Sato. During early December 1943, the Japanese withdrew to Cape Bushing. On February 12, 1944 the United States Marine Corps (USMC) Company B, 1st Marine Division landed on Rooke Island, but found it unoccupied.
Ki-61-II Tony Manufacture
Crashed February 1944
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October 23, 2019