The arms consist of a shield featuring four albatrosses in a blue-and-white mirror image design. The central diamond-shaped charge is based on a charge from the arms of the da Cunha family to which Admiral Tristão da Cunha belonged, after whom the island is named: "cunha" in Portuguese means "wedge", and blue wedges feature in the da Cunha arms as a canting charge.[2] The two supporters are Tristan rock lobsters, which are found in the waters surrounding the island. The crest on the closed or tilting helm(of the Da Cunha family of esquires), features a naval crown and a Tristan da Cunha longboat.[2]