Palau Islands

Relief map of Palau Islands

The Palaus are located at west end of the Caroline Islands and some 470 miles (540 km) east of the Philippines. They were discovered by Europeans in 1543 and went successively through Spanish and German hands before coming under Japanese control following the First World War.

There are several large islands in the group, of which the largest is Babelthuap. There was a large phosphate deposit on Angaur (producing about 110,000 tons per year during the war) and bauxite deposits throughout the group (producing about 94,000 tons per year). The Japanese had built an airbase at Peleliu and improved the anchorage at Kossol Roads by the time war broke out. The anchorage served as the mustering point for 4 Surprise Attack Force and as a submarine base.

In 1941, there were about 30,000 Japanese civilians here, most of whom emigrated during the 1920s and 1930s.  There were also about 5,000 Melanesians, whose lot had improved sufficiently under the Japanese that they were fairly loyal to the Emperor Hirohito. Most lived on Angaur.

The initial garrison of some 5000 naval troops was reinforced by 14 Division (Inoue) in May 1944.

During the HAILSTONE raids of 17-18 February 1944, the main Japanese fleet was forced out of Truk and retreated to Palau. Because of the proximity of the islands to Hollandia, New Guinea, Pacific Fleet launched a second series of raids on 30 March-1 April 1944 to cover MacArthur's invasion of Hollandia. Three carrier groups sortied from Majuro on 22 March 1943, along with two support groups, and sailed on a roundabout course south of Truk. However, the Americans failed to avoid detection, being sighted by a Japanese reconnaissance aircraft on 25 March.  Spruance responded by hastening the attack timetable, ordering his destroyers to refuel from the support group on 28 March and racing in to attack Kossol Roads two days ealier than planned. This was not enough: Forewarned, the Japanese fleet was again able to make good its escape. The Americans did sink a number of merchant ships, and Musashi was torpedoed and lightly damaged by Tunny. The operation was marked by the first use of aerial mines by carrier aircraft, 78 of which were laid by a specially trained squadron of Avengers and succeeded in trapping over thirty merchant ships in the anchorage.

Subsidiary strikes were directed at Yap and Woleai during this raid.

The islands of Peleliu and Angaur and the anchorage at Kossol Roads were invaded by the Allies in September 1944 at great cost in life. The remainder of the Palaus were bypassed.

Climate Information:

Temperatures: Jan 80, Apr 81, Jul 81, Oct 81

Rainfall: Jan 23/11.7, Apr 21/10.4, Jul 26/15.2, Oct 22/13.1 == 135.6" per annum

References

Cohen (1949)

Morison (1953, 1958)

Pearce and Smith (1990)

Van Royen and Bowles (1952)

Valid HTML 4.01 Transitional