NavList:

Thanks for the  link. SM Burton gave a very interesting talk  in Grimsby in 1962. Here are some of the thoughts I had as I read the article:

Burton was a latecomer in the field of nautical tables.

Davis had problems with copyrigt. Inmans tables contain a notice from Percy Davis warning that reproduction of his haversine tables was not permitted. Reference is made to Bowditch and HO200 using the tables without permission.

In 1927 the "new navigation" was  not very well known in the British merchant marine. Burton had probably not been taught the new navigation and discovered it out of curiosity. His excitement is obvious.

I like the expression "blunder ratio".

Typesetting before the age of the electronic computer was very expensive. If  a second edition was planned type had to be rented at 40 pounds p.a. or plates made for 120 pounds.

Burton explains why he wanted to replace Raper, Inmans, Norie etc. I have purchased a copy of Burton online. When it arrives I will be able to compare his tables with Raper et al.

To summarise  -  Burton's talk was short but contains a wealth of information.