US Navy vs. Army in San Diego

While we were near the north end of San Diego Bay, we saw a small reminder of the US Navy's presence in the city. I couldn't see any flag or markings on this ship, but will venture way out on a limb and guess that it's some sort of amphibious assault support ship, such as maybe a dock landing ship or amphibious command vessel. Does anyone know just what this is?

Of course, San Diego is a major US Navy home Pacific Fleet home port, supporting everything from landing craft and stealthy submarines to gigantic aircraft carriers.








And now let's hear it for the US Army in San Diego. Although one never thinks of San Diego as an army town, I did find a slight US Army presence at the San Diego Maritime Museum, of all places. So, here goes:
Kit, US Army, Outboard Motor, in case, with accessories

Exhibit label for "Army Outboard Motor"

Two views of top of motor