Pierre and Marie Curie are best known for their pioneering work in the study of radioactivity, which led to their discovery in 1898 of the elements radium and polonium.
1 The beam of your boat is the width at the widest part of the boat.  To measure the beam, stand inside the boat and run a measuring tape from the port (left) side to the starboard (right) side at the widest section of your boat.
A few other common boating terms to know are: 1  The gunnel, or gunwale, is the top of the sides of the boat. 2  The front of the boat is called the bow and the back is called the transom. 3  When someone asks you what the beam width of your boat is, that is the widest part of your boat.  I/O stands for inboard outdrive motor.