a cylindrical log with a device that registers distance
spear with a harpoon
a spear with a shaft and barbed point for throwing; used for catching large fish or whales; a strong line is attached to it
cut lumber, as in woods and forests
measuring instrument that consists of a float that trails from a ship by a knotted line in order to measure the ship's speed through the water
a written record of messages sent or received
a written record of events on a voyage (of a ship or plane)
the exponent required to produce a given number
