The Iwo Jima-class landing platform helicopter (LPH) was the first purpose-built amphibious assault ship specifically designed to carry helicopters. They were commissioned in the 1960s so the Marines wouldn't have to keep using old WW2 carriers to transport their stuff. I wasn't able to find a model anywhere in this quadrant of the galaxy so it's been frankenrendered. Best bet is to squint when looking at it. Thanks to Wyrm as usual for special effect additions.