Abstract: Distinctive Features:Depths shown by soundings.The proposed track of the Telegraph Cable south of Cape Musondom shown in red line.Inscriptions:On recto in the upper left-hand corner below title an explanatory note on survey and sources, signed 'C.G. Constable Commandr. H.M.I.N.'.In the lower right-hand corner in later hand: ‘To accompany Letter no. 29, P. Stewart. 20/10/62’.Physical description: Materials:Pen and ink on tracing clothDimensions:380 x 280 mm