Unveiled in 1999 to mark the centennial of the U.S. Navy's official involvement with submarines. Sculpted in bronze by artist P. Wegner, it shows the top half of an Earth globe, out of which erupts a Noah's Flood-size geyser of water. Riding atop the gusher plume like a surfboard is the front half of a submarine. Within the bow wave of the breaching sub are several porpoises apparently swimming for their very lives -- and the disembodied heads of a half-dozen oversized sailors with blank, unsettling faces.