northwest of Main Island is Holgate Shoal, an area of shoals named by the UK-APC for Able Seaman Ralph A. Holgate of the Owen, which charted the shoal in 1961.
Located to the north of Main Island is Holgate Shoal, a region of shallow waters that was designated by the UK-APC in honor of Able Seaman Ralph A. Holgate of the Owen, who mapped the area in 1961.