Gross vehicle mass was the maximum operating weight of a vehicle.
A schematic of the Erstwhile listed the gross vehicle mass of this starship at 23,200 tons. (TNG: "The Outrageous Okona")
A schematic of the SS Mariposa listed the gross vehicle mass of this starship at 3,000 metric tons. (TNG: "Up The Long Ladder")
A schematic of the USS Enterprise-D listed the gross vehicle mass of this starship at 5,000,000 tons. (TNG: "New Ground")
This schematic was seen at Commander William T. Riker's station on the Enterprise-D bridge.