Chartlets from 2010 to 2020 apart from 2012, and no survey in 2020 due to COVID.
Charts & Maps
French site with lots of material not yey explored.
Free Nautical Charts
Needs to be seen on paper – large.
Deben map by Simon Read
Includes the Deben and some notes on distances. See here.
1635 Mercator Atlas of the World
History here and online maps here.
Soviet Maps
Extensive, need to pay.
L Brown Map Digital Collection
https://suffolkinlets.wordpress.com/
Suffolk Inlets
Here
1752 Thames Chart
By Captain Washington. 1852 A new chart of the River Thames. With its entrances
1852 A new chart of the River Thames. With its ...
Source: Survey Open Data