One of the timbers used as a spoke on a paddlewheel. The arms are all affixed to the flange

A set of two or more cylindrical boilers, arranged side-by-side in a single boiler casing

The area on the inside of the hull where the side of the hull meets the bottom, sometimes in the form of a chine

Heavy, upright posts, strongly fastened to the hull, used for securing lines connecting the boat to the shore, to tows

A large pulley. A block may have two or more rollers, called sheeves

The deck above

A long spar, or pole, used with block-and-tackle to move heavy weights around the boat and between boat and shore. Also can be used to help move the boat off an obstacle or the shore.

A heavy, wooden post, set upright or at an angle, over which the chains

Lightweight, sheet metal connection between the boilers and the chimneys

One of the blade on the paddlewheel that came in contact with the water, propelling the boat. Often called a “float” in other maritime contexts.