Setting. Said of a heavenly body when it moves down to western horizon. 2. Setting a course is putting ship's head in a desired direction. 3. Setting an observed object is ascertaining its compass bearing.
Setting Pole. A quant. Long pole by which a craft is propelled by putting pole on bed of the waterway, and bearing on it.
Sewed. Said of a vessel when water level has fallen from the level at which she would float. Also said of the water that has receded and caused a vessel to take the ground.
Sewn Boat. Boat made with a double skin of Honduras mahogany. Inside planking is at right angles to keel, and is 5/32 -inch thick. Outer skin goes horizontally, and is ¼ -inch to 3/8 -inch thick. These two skins are sewed together with copper wire.
Sewing. Said of water level when it is falling away from a minimum height necessary to float a particular vessel.
Sextant. Reflecting instrument used for measuring altitudes and other angles not exceeding 120°.
Shackle. Somewhat semi-circular bar of metal having an eye in each end to take a pin. Used for connecting purposes. 2. Length of chain cable measuring 12 ½ fathoms in Royal Navy,