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.
boat-a small vessel for travel on water. dredger-a barge (or a vessel resembling a barge) that is used for dredging. houseboat-a barge that is designed and equipped for use as a dwelling. pontoon - (nautical) a floating structure (as a flat-bottomed boat) that serves as a dock or to support a bridge.