A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Position-Finding
From: Geoffrey Kolbe
Date: 2018 Nov 29, 23:34 -0800
Charles McElhill wrote:
"Did in fact these locations have look up references for latitude and longitude or did Bligh make his own observations through Lunars and note the time keeper error based on his own observations."
I have an ancestor who was the astronomer for the Cape of Good Hope back at the turn of the 18th century. By the time Bligh came along, longitudes in the Cape were pretty well established.