Synonyms for Dockage (same or very similar meaning)
WordNet sense 1 (a fee charged for a vessel to use a dock):
docking fee
WordNet sense 2 (landing in a harbor next to a pier where ships are loaded and unloaded or repaired; may have gates to let water in or out):
dock, docking facility
WordNet sense 3 (the act of securing an arriving vessel with ropes):
moorage, docking, tying up
From the ODE community, based on WordNet
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