Great tribute to these "shipmates on eternal patrol", this VietNam-Memorial-like tribute to the submarines and crews who perished in WWII is just a short drive south from the Submarine Museum near the entrance to the New London Submarine Base.  It is located on Bridge & Thames St in Groton, CT. 

It is quite humbling and, for such a small memorial, it is quite moving.  The cost is free and you can spend as little as 15 minutes there and get an appreciation for the human cost and the impact these sacrifices made for the war effort.  It is a wonderful tribute to some very special war heroes and the ultimate sacrifice they made for this country.