Looking for old, educational Flash game about WW2 destroyer ASW tactics.

[somedude88]

About 8-10 years ago I came across a website that talked about destroyer escorts and their role in escorting supply ships and the problems and solutions they applied when coming across a u-boat attack and there was a part of the website that had this interesting little interactive flash game where it gave you a scenario with an overhead visual on the formation of the convoy and it essentially asked you which tactic/depth-charge pattern to employ against the u-boat, then it would play a short animation of your destroyers leaving the convoy, forming up and doing a depth charge run, then showed you the results and showed whether or not you made the right decision. I was wondering if anyone knows what that website was, cause I am interested in possibly making a sub management game. Thanks.