Comment on Zoomable, translated version of the 15th century Mappa MundiComments−shzhdbi09gv8ioi2yIn the baltic sea, the text translation reads "This sea is not navigated with map and compass but with a sounding-lead; and throughout here there are many inhabited islands"I wonder what a sounding-lead might be?−dzhiurgis2yhttps://en.wikipedia.org/wiki/Depth_sounding−shzhdbi09gv8ioi2yCool, thanks!−rzmmm2yMaybe gauging the depth of the water with a lead weight.
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In the baltic sea, the text translation reads "This sea is not navigated with map and compass but with a sounding-lead; and throughout here there are many inhabited islands"
I wonder what a sounding-lead might be?
https://en.wikipedia.org/wiki/Depth_sounding
Cool, thanks!
Maybe gauging the depth of the water with a lead weight.