Recovered from Portsea Channel circa mid 1980s by captain Doug Knight, Two Commando Company, when conducting shallow water dive training in the 1980s whilst based out of Officer Cadet School, Portsea.Two plates recovered from the Portsea Channel circa 1980s1. Orient Line of Royal Mail Steamers white china plate with logo on front and back. 2. White Star Line china plate with blue edge design and central logo.passenger liners, table wear, captain doug knight, portsea