There was a thread a few weeks ago about military ships carrying cargo. While it's not normal, evidently the Navy does it on an irregular basis. It's called an opportunity lift, and when a large ship, like a carrier, is doing a home port change the navy takes advantage of the carrier to save a lot of money by transporting the sailor's cars. From the photo it looks like they keep the forward catapults free, but the main sea deck is covered with vehicles. For this trip the carrier was going from San Diego to Bremerton for maintenance, so it's air wing was not present.
In reference to the discussion about using naval vessels as cargo ships, I suppose it might occur more often in a Traveller setting as well, but it seems like the logical use would be opportunity transport where the ships are not expected to do any fighting while they transit to their destination. And this is meant to take advantage of free cargo space.
Still interesting and something I wasn't aware of.
https://www.wearethemighty.com/military-life/see-the-navy-haul-its-crews-vehicles-on-the-uss-ronald-reagan
In reference to the discussion about using naval vessels as cargo ships, I suppose it might occur more often in a Traveller setting as well, but it seems like the logical use would be opportunity transport where the ships are not expected to do any fighting while they transit to their destination. And this is meant to take advantage of free cargo space.
Still interesting and something I wasn't aware of.
https://www.wearethemighty.com/military-life/see-the-navy-haul-its-crews-vehicles-on-the-uss-ronald-reagan