| Description | Summary report on tidal observations in the Banka Strait, between Sumatra and Bangka Island, most likely made at Mentok, Bangka Island, Indonesia.
Headed: 'Rapport. Omtient de Getijen en Stroomen in Straat Banka'. [Report. Concerning the tides and currents in Banka Strait]. Signed by 'De Luitenant ter Zee 2d Klasse' P.J.D. Keuchenius and by Inspector of Marine, W. de Constant Rebecque. |