The 53's don't go on ships, they are domestic, rail within the states/mexico via the UP's Nogales line from Chicago, alot are owned by APL/Pacer or Schneider J.B Hunt.
off track on that, it looks like a 40 or 45' NOL box or any number of domestic vans ) APL has some . the corregated floor is uniqueish, often used in produce loads/reefer loads for sanitary reasons/cleanup
clarification in my post APL = American Presidents lines, not apple
Ok did some checking, APL ( American Presidents Line) does have ocean going reefers nowdays, https://www.apl.com/wps/portal/apl/apl-home/services/refrigerated-cargo/refrigeratedcontainers
Thats what I went into detail about in prior bread. It looks to be an old domestic van. but.. APL does now have steamship containers that are reefers, which I touched on in this bread, to correct myself from the prior.
basically the thing is an aluminum box with a corregated floor = lends itself to being a reefer.
NO ONE ships them half empty with the weight in the nose ( DOT overweight issues) unless it's just household shit or a special load which weight isn't an issue for.
I made sure to note APL Lines as Q had an apple store… what do you think of, "oh for the uninitiated APL = Apple.