Kriegsmarine and Ultra along the Dutch coast

[Hans Jehee]

Hallo,

My name is Hans Jehee and I am researching (among others) the naval warfare along the Dutch coast. Next week (starting the 10th of May) I will visit The national Archives to continue my reseach. My intention was to get an idea how the various Records DEFE3, HW1 and HW 5 relate to each other. Nick Beale's guide and the threads "Using Ultra to reseach The Luftwaffe" and "Using Y-intercept to research the Luftwaffe" were very useful to acquired some understanding of this subject.
Though this forum is primarily dedicated to Luftwaffe-research I can imagine that you guys also come across "Kriegsmarine" material. I am interested in all Kriegsmarine and Luftwaffe (naval-related) material related to the anti-shipping warfare along the Dutch coast and its extensions to The Channel and the Helgoland Bight.
Maybe can somebody give any tips, clues or directions where to look.

Greetings, Hans Jehee

P.S. If one of you have question about German naval operations along the Dutch, don't hesitate to contact me. I have a rather extensive collection about this subject, including nearly all the KTB's (War Diaries) of German Naval units stationed in the Netherlands.