Which amphibious vehicle is used for logistics support operations over the beach and for salvage operations inside the surf zone?

The LARCV, or the Landing Craft Auxiliary Resupply Vehicle, is specifically designed to support logistics operations directly over the beach and conduct salvage operations within the surf zone. Its key features allow it to operate effectively in shallow waters and manage irregular terrain, making it well-suited for delivering supplies and equipment where traditional transport methods might fail.

The other options, while they serve various functions in amphibious operations, do not have the same capability focused on logistics support directly on the beach or within the surf zone. The AMTRAC primarily serves as a troop transport, the LCAC is more suited for high-speed transport of vehicles and equipment across a larger body of water, and the M113 is an armored personnel carrier that operates primarily on land rather than performing specialized beach logistics support. Thus, the specific design and function of the LARCV align perfectly with the needs for logistics and salvage operations in these challenging environments.