The phrase "entire fleet" refers to all the vehicles or ships that belong to a particular group or organization. It means every single vehicle or ship they have. Full definition
Performs inspections, preventative maintenance, service and repairs on entire fleet of diesel trucks and automobiles, as well as machinery, and Toyota propane and diesel fork lifts at all company locations in NY and CT.. (jobhero.com)
Contracted to [company name] to perform all necessary and scheduled maintenance on entire fleet (jobhero.com)
The game lets you command entire fleets as well as individual ships. (gamepressure.com)