Yes I was referring to REC and you do only rent them for 7 days but it is actually 14 12hr periods. Also once your rental is up you can rerent it with a discount.

It is pretty easy to earn REC in game though so unless you are renting the most expensive ship you should be able to generate enough money to rent again by the time the week is up.

I do wish they would switch them to 4hr blocks instead though. No one plays for 12hrs... hell even 4hrs would be wasting time.