Success against the U-boats

https://time.com/5772665/uboat-wargames/?utm_source=facebook.com&utm_medium=social&utm_campaign=social-share-article&utm_content=20200129&fbclid=IwAR0lEeeUjwEueEzqfFr69x5AszCPwA55DZTLw7vcQLmiaZ36AlEB5VombJg

An interesting tidbit from WWII.