The flare of a ship refers to the curvature or outward slope of a ship's hull towards the bow. It is designed to help deflect waves and provide a more stable ride in rough conditions. A greater flare can also contribute to a drier deck by minimizing spray.

flares orange tarp dye flare gun parachute flare radio distress button epirb

To burn with an unsteady or waving flame; as, the candle flares., To shine out with a sudden and unsteady light; to emit a dazzling or painfully bright light., To shine out with gaudy colors; to flaunt; to be offensively bright or showy., To be exposed to too much light., To open or spread outwards; to project beyond the perpendicular; as, the sides of a bowl flare; the bows of a ship flare., An unsteady, broad, offensive light., A spreading outward; as, the flare of a fireplace., Leaf of lard.

Pi spots a large ship passing by in Chapter 77. He tries to signal it for help by using his flare gun, but the ship continues without stopping. This disappointing event leaves Pi feeling disheartened and abandoned.

AP Flare = Atmospheric Pressure Flare