Burgee of the Pirate Yacht Club, Bridlington, used as a sledge flag by William Colbeck RNR on the Borchgrevink Antarctic Expedition 1898-1900. The burgee is made of red wool bunting printed with a black skull and crossbones. It has a machine-sewn linen hoist and is mounted on card, framed and glazed.

Inscribed on the mount: ‘Burgee flown by Lieutenant Wm. Colbeck R.N.R, F.R.G.S, a member of the Pirate Yacht Club on Sledge journey across the Great Ice Barrier when in company with C.E. Borchgrevink F.R.G.S. the farthest South was attained Lat 78˚ 50΄ S. Long 164˚ 30́ W. on 17 February 1900. The sledge was detached from S.Y. "Southern Cross" Southern Cross expedition of which Lieutenant Colbeck was Chief Magnetic Observer.'

A further note on the mount states 'Previous farthest south 78˚ 10΄ by Capt Ross’.