Pulled this off a web site the other day and wondered what kind of ship this might be (sorry it is a little dark). This was taken at Iwo Jima and the ship seems to have suffered damage both fore and aft, but seems to have a pretty big gun on the main deck. I don't know what it is, just asking.
Looks like a busted up LCI Gunboat. The "big" gun is a rocket launcher.....
LCI(G)-1 class Landing Craft, Infantry (Gunboat):
Displacement: 387 tons (full load)
Draft: 2'10" forward, 5'3" aft (landing)
Speed: 15.5 knots
Armament: 2-3 40mm, 3-4 20mm, 6 .50 cal, 10 Mk 7 & 2 Mk 22 rocket launchers
Complement: 5 officers, 65 enlisted
8 GM diesel engines, twin screws