berthage|ˈbɜːθɪdʒ| [f. berth v.1 + -age.] a. Accommodation for mooring vessels, harbourage. 1881Daily News 25 Jan. 5/8 The new sea wall..provides berthage for as many as thirty vessels at once. b. The dues payable for mooring a vessel. 1893in Funk's Stand.Dict.