Also called a life jacket, life preserver or life vest. PFD Personal Floatation Device. A device used to keep a person afloat. Also called a life jacket, life preserver or life vest. Usually made out of wood or cement.
Some areas require that boats and ships be piloted by a licensed pilot .
A pin used to attach a stern mounted rudder . The hole that the pin fits is known as a gudgeon . A fore and aft rocking motion of a boat. Also see roll and yaw . A material used to seal cracks in wooden planks.