Newcomb Bay is a sheltered bay about 1 mile (1.6 km) in extent, between Clark Peninsula and Bailey Peninsula in the Windmill Islands. First mapped from U.S. Navy Operation Highjump aerial photographs taken in February 1947. In February 1957, Willis L. Tressler, oceanographer, led a party from the USS Glacier (AGB-4) to survey the bay and record depth soundings. Name suggested by Tressler for Lieutenant Robert C. Newcomb, U.S.