There are a few categories for ships with two masts. The first and most common is called a "schooner" A ship falls into this category when it's second mast (the one to the rear) is taller than the one in the front. If the second mast is shorter than the first, the ship is either a "catch" or a "yall" depending on the position of the helm in relation to the second mast's boom.
A ketch is a sailing ship with two masts.
A schooner may have 2 or more masts.A ketch has two masts, with wheelhouse between them, longitudinally speaking.A yawl has two masts, with wheelhouse abaft of both.A brigantine has two masts.There are others, we are not alone!
A sailing ship, also called a vessil has two masts a kell and a hull
the Clipper had 3 or more masts
It was a steam ship, so no masts for sails.
A barque has 3 (or sometimes more) masts.
5
It is the mast that occupies the most forward (toward the bow, or up front) of positions on a multi-masted ship. If there are two masts, the other longer mast closest to the middle of the ship would be the mainmast. If there are three masts, the mast closest to the stern (aft) would be the mizzenmast.
Tall ships. More specifically, a Barque or Bark has three masts (possible more) fore and aft rigged mizzen mast. Barquentine, three masts with all but the foremost fore and aft rigged. A fully rigged ship, three or more masts, all of them square rigged A Schooner, three or more masts with fore and aft rigged sails
boat, vessel, sailing ships:barque, or bark - at least three masts, fore-and-aft rigged mizzen mastbarquentine - at least three masts with all but the foremost fore-and-aft riggedbilander - a ship or brig with a lug-rigged mizzen sailbrig - two masts square rigged (may have a spanker on the aftermost)brigantine - two masts, with the foremast square-riggedcaravelcarrackclipper - a square-rigged merchant ship of the 1840-50s designed for speedy passagescog - plank built, one mast, square riggedcorvette - an imprecise term for a small, often ship-rigged vesselcutter - Fore-and-aft rigged, single mast with two headsailsdhow a lateen-rigged merchant or fishing vesseldinghy - a small open boat, usually one mastfrigate - a ship-rigged European warship with a single gundeck, designed for commerce-raiding and reconnaissancefishing smackfluyt - a Dutch oceangoing merchant vessel, rigged similarly to a galleonfull-rigged ship - three or more masts, all of them square riggedgalleon - a large, primarily square-rigged vessel of the sixteenth and seventeenth centurieshermaphrodite brig - similar to a brigantine
That fellow is known as the "ship's carpenter" or in a dockyard as the "Shipwright"
If you mean what holds a ship's masts up, that is 'rigging' .