I'm not familiar with Navy trucks, but I'm guessing there's nothing different than the civilian model since it has civilian (bowtie) badges on it.
This is my 65 K-10 that was a former Forestry Service truck. It used to have a US plate on it also, but it's civilian specs in every way.
When I was in the Army even civilian type vehicles got what the Army called nomenclature plates, and I suspect that's what you're seeing there.
Either way, good looking truck you've got there to start with.
Good luck and be sure to start a build thread on it.