In 1911-12 as part of the Abor Expedition, the Survey of India conducted widespread surveying of the tributaries of the Brahmaputra. Morshead was in a team surveying the Dibang River while Frederick Bailey was surveying the Dihang. Oakes and Field of the Dihang team were first to measure the height of the Namcha Barwa and, from Dibang, Morshead confirmed the height - the separate measurements were able to provide a very accurate location.