A single masted boat is a sloop or a catboat.
a "one masted vessel" is a boat with a single mast, or a large metal/aluminum piece standing vertically in the boat. the mast always holds the main sail of the boatthere are many one masted sailing vessels in the worldsome include ::-J24-Tartan 28-Snipe-420-Laser-505-Lightening-Etchell-Viper-470-49er-29er-Sonar-Star-I420and that's just a handful! good luckAnother answer:If the sails are rigged fore and aft, a one-masted sailboat is usually a sloop or a cutter. I am not aware of the name used for one-masted square or lateen rigged boats.
It could be either a "ketch" or a "yawl".
The STD Erection
Hi this seems like an answer, what was the question?
This could be a sloop (main + jib), a cutter (main + jib + foresail), or a cat boat (main alone). There are many variations.
A yawl (or yaul) is a 2 masted sailing boat with the smaller (mizzen) mast placed well back.
Sloop
Yawls, ketches and two-masted schooners all match this definition. The jib or headsail is not used to define the boat, as almost all fore-and-aft rigged boats have a headsail of some kind.
3-masted Schooners and Viking Long Boats (or any oar powered war ships)
The aftermost sail in a multi-masted boat is typically the mizzen, but in some rigs can be called the spanker as well.
Sloop.