Cape Herdman is a broad ice-covered cape forming the south entrance point to Violante Inlet

Violante Inlet

Violante Inlet is an ice-filled inlet 16 nautical miles long, in an east-west direction, and 12 to 15 nautical miles wide, lying between Cape Fanning and Cape Herdman along the east coast of Palmer Land. Discovered and photographed from the air in December 1940 by members of the United States...

, on the Black Coast

Black Coast

Black Coast is the portion of the east coast of the Antarctic Peninsula between Cape Boggs and Cape Mackintosh. This coast was discovered and photographed from the air by members of the East Base of the U.S. Antarctic Service, 1939–41, on a flight of December 30, 1940...

, Palmer Land

Palmer Land

Palmer Land is that portion of the Antarctic Peninsula which lies south of a line joining Cape Jeremy and Cape Agassiz. This application of Palmer Land is consistent with the 1964 agreement between US-ACAN and UK-APC, in which the name Antarctic Peninsula was approved for the major peninsula of...

. The cape was photographed from the air in 1940 by United States Antarctic Service (USAS); rephotographed from the air in 1947 by Ronne Antarctic Research Expedition

Ronne Antarctic Research Expedition

The Ronne Antarctic Research Expedition was an expedition from 1947-1948 which researched the area surrounding the head of the Weddell Sea in Antarctica.-Background:...

 (RARE) and, in conjunction with Falkland Islands Dependencies Survey (FIDS) surveyed from the ground. Named by United Kingdom Antarctic Place-Names Committee (UK-APC) after Henry F.P. Herdman (1901–67), British oceanographer and member of the scientific staff of DI, 1924–49; with the National Institute of Oceanography, 1949-67.