'Private Signals settled by the Lords of the Admiralty the 4th February 1780 to be observed by the Ships of His Majesty and those of the East India Company on their meeting to know each other', by day, by night, and when within hail.
'Private Signals settled by the Lords of the Admiralty the 4th February 1780 to be observed by the Ships of His Majesty and those of the East India Company on their meeting to know each other', by day, by night, and when within hail (formerly SM13).