Long as I did not post here
With friends we left in search of a French submarine, sank in 1912 after a collision with a battleship.
The accident that occurred in the Raz Blanchard, between the island of Alderney and Cap de La Hague current the most powerful in Europe.
Several professional teams with the latest equipment is sought without success.
We have found with my boat and its Humminbird fishfinder!
An RM map was performed, and a small video using a sports camera.
Here RM map


Link to my blog with sonar scrennshot and the first vidéo:
imageviesousmarine.over-blog.com/2016/08...miaire-retrouve.html

Brilliant stuff - congratulations ! The tide window was probably smaller than you bottom time I imagine ?

T

Yes about 10mn, get surface about 1mille from the wreck.