Marine engineering

engineering of boats, ships, oil rigs and any other marine vessel or structure

ship designed to transport LPG, LNG or liquefied chemical gases in bulk

dimensionless quantity used in fluid dynamics

SolidSail, sometimes referred to as Solid Sail or SolidSail Mast Factory (SMAF) in reference to the eponymous subsidiary, is a wind propulsion technology designed for large vessels, developed by Chantiers de l'Atlantique in Saint-Nazaire, France. This innovative system is based on rigid sails made of composite materials and a tilting gaff rigging, enabling hybrid or primary wind propulsion for commercial and cruise ships. It is also the name of the subsidiary created by Chantiers de l'Atlantique in 2023.

thumb|300px|1806 diagram of the Pyréolophore, drawn by the Niépce brothers

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