A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: David Pike
Date: 2021 Apr 4, 01:07 -0700
Peter Blaskett you wrote: Can anyone shed light on what his annotation T.K. could mean. See this attachment for examples.
I can’t help. It could be anything from the line’s reliability to the initials of the mate taking the soundings. I couldn’t find it in here 5011.indd (saillavie.co.il) , but you might find it useful nevertheless. DaveP