contracts. The compensation given to a pilot for conducting a vessel in or out of port. Poth. Des Avaries, n. 147. 2. Pilotage is a lien on the ship, when the contract has been made by the master or quasi master of the ship, or some other person lawfully authorized to make it; 1 Mason, R. 508; and the admiralty court has jurisdiction, when services have been performed at sea.