You can see that it’s been there a while, as the homeowner’s have patched things up a bit. From Shorpy.
UPDATE: Since Murdoc’s rule is “If it’s bigger than .50, consult Donovan,” I emailed The Armory on this, wondering if the Army had any 16″ projects at the time. The Navy’s first 16″-gunned BBs didn’t hit water until 1920. I figured this might be testing of the new biggies, but wanted some expert input. Here’s what I got:
Yes, [the Army] did, but that kind of testing was done at Aberdeen. Back at that point in time, Indian Neck was called “Naval Proving Ground Indian Neck” and they did gun development there – so it’s right time and place for the development of the naval 16 inch rifles.
UPDATE 2: Too good to leave in the comments section:
Thank God everyone was wearing eye protection!