#nautical engineering

• Aerotechnical — Belonging to aviation technology or relating to the construction, operation, and maintenance of aircraft; concerning aerotechnics. The term describes industrial mechanical processes, aerodynamic design standards, or precision devices specially designed for the civil and military aeronautical environment.
• Winging — A rare technical term or speculative neologism utilized to describe the structural process of forming, attaching, or developing wings or wing-shaped geometric components on a fuselage, mechanical device, or biological organism.
• Arsana — An old shipyard, arsenal, or fortified shelter on the coast of the sea or large rivers, intended for the construction, repair, and wintering of military and commercial ships or boats. The term, of Arab-Ottoman origin, describes a specific architectural structure of the Mediterranean, Black Sea, and Danubian basins, often integrated into port or monastic fortifications.
• Astrocompass — The modern synonymous variant of the term astrocompass; a mechanical, optical, or electronic instrument used to determine true north, a vehicle's heading, and azimuth by directly sighting and tracking celestial bodies. This device plays a crucial role in high-altitude, high-precision aerial or maritime navigation, functioning as an independent redundant system in the event of magnetic or electronic GPS equipment failure.
• Astronavigation — The science, technique, or method of guiding and determining the position, trajectory, and speed of a vehicle (maritime ship, aircraft, or spacecraft) through astronomical observations performed on celestial bodies (Sun, Moon, stars, or reference planets). In the context of modern spaceflight, it represents an essential pillar of astrodynamics, utilizing stable optical sensors (star trackers) for the autonomous orientation of interplanetary probes when ground guidance signals are unavailable.
• Avional — A high-strength structural aluminum alloy, having copper, magnesium, and manganese as its main alloying elements, widely used in the aeronautical and aerospace industries. This metallic material is characterized by a low density, excellent mechanical properties similar to mild steel after hardening heat treatment, and optimal resistance to structural fatigue, making it ideal for airplane fuselages and components.