A schooner? I thought that it was a sloop if it had one mast and two sails. I don't know the names in English, but I know them in Polish.
Ket- 1 mast 1 sail
Slup- 1 mast two sails
Sluter- 1 mast three sails
Kecz- 2 masts three sails, steering behind rearmost sail
Jol- 2 masts three sails, steering before rearmost sail but behind second to rearmost sail
-Penguin
I am a professional merchant mariner of 20 years holding a 200 ton Near Coastal licence with sailing endorsement and Able Bodied seaman. Penguin, you don't need a licence to operate a vessel if it is not for commercial purposes, that is, you won't be getting paid to run it. Judging by your lack of knowledge demonstrated by your super tanker statement, you should not endanger yourself, your family or the public by renting a vessel and not being completely comfortable with it, the navigational regulations and the waters you plan to operate in. People get killed routinely on the water and an entry level boating class does not mean you should tackle something you don't have a lot of recent experience with. Hire a licensed captain for any real cruising~ inland waters can be just as treacherous.
A sloop and cutter are both single masted, a sloops' mast is in the first 1/3rd of the hull and a cutter's is located bet 1/3 and 1/2 way aft both have a mainsail and one or more foresails.
Ketches and Yawls are two masted with the larger mainmast forward. In a yawl the mizzen or after mast is stepped aft of the helm and a ketch forward.
Schooners can have up to five masts (usually two) the taller mainmast is stepped aft of the shorter mizzen forward.
~Seadog36