Britannica
Sources used in this answer
When were the first hydrographic surveys of the French and English Channel coasts completed?
Created from Britannica articles
using AI.
AI can make mistakes, so verify using Britannica articles.
English Channel
The Baltic and North seas and the English Channel.
The first official hydrographic surveys of the English Channel coasts were completed in the 19th century. Specifically, the survey of the French coast was finished in 1829, while the survey of the English coast was completed in 1847.1