mezzana

Mizzen derives from Italian mezzana, the feminine form of mezzano (middle, intermediate), itself from Latin medianus (of the middle), from medius (middle). The same Latin root gives English 'median,' 'medium,' 'mean' (in the mathematical sense), and 'Mediterranean' (the sea in the middle of the land). In the early history of Mediterranean multi-masted vessels — the two- or three-masted lateeners and early square-riggers of the 14th and 15th centuries — the mezzana was indeed the middle mast of a three-masted arrangement: not the forward foremast, not the central mainmast, but the one between them. Italian maritime vocabulary, which dominated Mediterranean seamanship in this period, supplied the term, and it moved into Spanish (mesana), Portuguese (mezena), and French (misaine) as Iberian and Atlantic seafaring cultures absorbed Italian nautical knowledge.

The complication arose as ship design evolved. As vessels grew larger and the demand for sail area increased, additional masts were added, and the arrangement of masts shifted. In the standard three-masted ship that emerged as the dominant European ocean-going vessel — the type that carried Columbus, Vasco da Gama, and their successors across uncharted oceans — the mezzana/mizzen moved from a middle position to the aftermost mast, the one closest to the stern. The foremast remained forward, the mainmast dominated amidships, and the mizzen became the rearmost of three. The name, however, did not change to reflect the new position: 'mizzen' stuck to the aftermost mast regardless of the fact that it was no longer in any sense the middle one.

The mizzen mast carries its own suite of sails and rigging. In square-rigged ships, a smaller square sail (the mizzen course) was hung from the mizzen yard, along with a fore-and-aft lateen sail called the mizzen that gave the stern of the vessel critical maneuverability. The mizzen-mast's position aft gave it a specific role in trimming the ship: a mizzen sail, by catching wind at the stern, could be used to help bring the vessel's bow into the wind (bearing up) or to balance the sail plan against weather helm. Skilled management of the mizzen was particularly important in heavy weather, when the balance between forward-pushing and stern-pulling sails determined whether a vessel could be controlled. The mizzenmast, despite its comparative modesty, was indispensable.

The mizzen entered English maritime vocabulary in the 15th century and has remained there without significant change. Ships named Mizzenmast, Mizzen, and variations appear in naval records from the Tudor period onward. The word also generated compounds: the mizzen topmast (the spar above the mizzenmast), the mizzen staysail (a fore-and-aft sail set between the main and mizzen masts), and the mizzen yard (the horizontal spar from which the mizzen course was hung). In modern fore-and-aft rigged sailing vessels, the term survives in the ketch and yawl rig: a ketch is a two-masted vessel with a mizzenmast taller than its tiller post, a yawl with a mizzenmast smaller and set abaft the tiller. The Italian word for 'middle' now names what is always last.