[REL] Haramirs Sensor Mod

Originally Posted by Ducimus

That is because thermal layers were deeper the uboats could go. The atlantic is much colder then the pacific.

Why was it pinned out in the U.Kmd.Hndb.(1942 edition) that the water should be measured for salinity and temperature to be able to use layers?

And in the same manual/book 6-7 specific places are mentioned where they are more profound then usualy (mentioned are Skagerrak, Kattegat, West coast of Norway, Pentland Firth, the Gulf Stream and Straits of Gibraltar)

Additionally in the book they write:

Position finding by ASDIC is very difficult, and almost impossible in:
Shallow water of varying depth(sand banks)
Where there are many wrecks
Narrow bays (Norwegian fjords)

as it is usually not an echo that is produced, but numerous echoes, which make it difficult to keep, but more especially to locate, the target.