A sloop has only one mast, for starters.
There’s a whole new vocabulary to learn.
It’s a way of looking through the eyes of others.
Those things on the ropes, er, lines are called baggy wrinkles. They protect the lines and sheets, i.e. sails, from harmful rubbing. That is, they’re a furry cover for rope sphering.
Deck prism is another term. It’s a small round window. Here’s how it looked from my bunk. Overhead, people were walking on it.
Hatch is the opening between the deck and the hold below. This one connects by a ladder (not stairs) to cabins (aka staterooms).
Another leads to the galley, which includes what others would call a kitchen.
Jnana's Red Barn 