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    Kapingamarangi (Greenwich) Pohnpei Province Federated States of Micronesia
USN 1944

Lat 1° 4 minutes North, Long 154° 48 East. Kapingamarangi Atoll consists of an oval coral rim enclosing a lagoon 6 1/2 miles long and 4 1/2 miles wide. About 30 inlets are set on the eastern rim. The atoll is roughly 480 miles south-southeast of Truk and about 440 miles southwest of Pohnpei and 200 miles northeast of New Ireland. Named "Greenwich" or "Pikaram" by the British. Known to the French as "Constantine". Kapingamarangi Atoll includes: Hare Island, Hepepa Island, Ueru Island, Nunakitsu Island and Rugureoru Island plus other smaller islands. Today, Kapingamarangi is part of Pohnpei Province in the Federated States of Micronesia.

Prewar History
Kapingamarangi was the most southerly island in the Japanese mandated South Seas area. The atoll has been used by the Japanese as a seaplane base. In 1935, the native population was 399 living on Hare Island and Nunakitsu Island and the islands between them. During the prewar years, Nanyo Boeki Kaisha steamers called at Kapingamarangi five times a year.

World War II History
During the Pacific War, used by the Japanese Navy as Kapingamarangi Seaplane Base and small ship anchorage. During 1941-1944, bombed by Allied aircraft. Occupied by the Japanese for the duration of the war.

Allied missions against Kapingamarangi (Greenwich)
December 15, 1941 - July 6, 1944

Kapingamarangi Lagoon (Greenwich Lagoon)
The only entrance to the lagoon is through Greenwich Passage, which is divided into two channels, able to accommodate small vessels. There is a 5-knot stream in the channel during ebb tides. Most of the lagoon has depths of over 16 fathoms, but parts are obstructed by banks and coral patches. The lagoon shores at most other island are sandy.

Kapingamarangi Seaplane Base
Located on the western coast of Hare Island at Kapingamarangi Atoll.

PB4Y-1 Liberator Bureau Number 31992
Pilot Van Voorhis crashed July 6, 1943

During the war, at least two small Japanese ships were sunk in Kapingamarangi Lagoon during November 1943: Auxiliary Minesweeper #5 and Hosho Maru.

Converted Fishing Vessel
Sunk in the lagoon, likely during November 1943

Unknown Vessel
Sunk in the lagoon, likely during November 1943

Naval Intelligence Division, Geographical Handbook Series, "Pacific Islands Vol IV: Western Pacific (New Guinea and Islands Northward). Produced & Printed during 1939-45 (August 1945 edition), pages 410 - 411

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Last Updated
May 22, 2017


Map 1945
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