phelps rock is an insular rock rising 10 m above sea level southwest of hugo island, in the west approaches to french passage, wilhelm archipelago. the rock was charted by a royal navy hydrographic survey unit from hms protector, 1966-67. named by united kingdom antarctic place-names committee (uk-apc) after captain edmund m.s. phelps, first officer in john biscoe, 1966-72 (senior master from 1972), who assisted with the hydrographic survey of the area, 1965-67.