Termos náuticos

This is a glossary of nautical terms; some remain current, many date from the 17th-19th century.
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Above board - On or above the deck, in plain view, not hiding anything.
Act of Pardon / Act of Grace - A letter from a state or power authorising action by a privateer. Also see Letter of Marque.
Abaft - Toward the stern, relative to some object ("abaft the fore hatch")
Abaft the beam - A relative bearing of greater than 90 degrees from the bow. e.g. "two points abaft the port beam."
Abandon Ship - An imperative to leave the vessel immediately, usually in the face of some imminent danger.
Abeam - 'On the beam', a relative bearing at right angles to the centerline of the ship's keel.
Abel Brown - A sea song (shanty) about a young sailor trying to sleep with a maiden.
Aboard - On or in a vessel. Close aboard means near a ship.
Absentee pennant - Special pennant flown to indicate absence of commanding officer, admiral, his chief of staff, or officer whose flag is flying (division, squadron, or flotilla commander).
Accommodation ladder - A portable flight of steps down a ship's side.
Admiralty - A high naval authority in charge of a state's Navy or a major territorial component. In the Royal Navy (UK) the Board of Admiralty, executing the office of the Lord High Admiral, promulgates Naval law in the form of Queen's (or King's) Regulations and Admiralty Instructions.
Admiralty law - Body of law that deals with maritime cases. In UK administered by the Probate, Divorce and Admiralty Division of the High Court of Justice.
Adrift - Afloat and unattached in any way to the shore or seabed. It may also imply that a vessel is not anchored and not under control, therefore goes where the wind and current take her, (Loose from moorings, or out of place). Also refers to any gear not fastened down or put away properly.
Advance note - A note for one month's wages issued to sailors on their signing a ship's articles.
Aft - Towards the stern (of the vessel)