The Navy Memorial that you mentioned, along PA Ave at 7th Street, was built in the 1980s. The other memorial, which I referenced before, is the Navy & Marine Memorial. It lies in Lady Bird Johnson Park, across the River, along the GW Parkway just before the 14th St. Bridge. Here’s a nice description of it, along with some info on another beautiful memorial, for the Titanic:
http://adams.patriot.net/~eastlnd2/rj/pl/dc/gulls.htm
Another lost Titanic memorial is the Butt-Millet fountain in President’s Park, in the Ellipse, jsut below the White House. It was dedicated to Maj. Butt and his friend, Francis Millet, who went down on the Titanic. Butt was ADC to President Taft, thus the prominent placement of the memorial at the foot of the White House.
http://www.dcmemorials.com/index_indiv0000860.htm
Like I said, I need to get out more. ;)
Thanks for the link on the memorials. Always something to learn in DC.