On the Plimsoll Line what doers F denote?
Deadweight tonnage Deadweight tonnage Deadweight tonnage (also known as deadweight; abbreviated to DWT, D.W.T., d.w.t., or dwt) or tons deadweight (TDW) is a measure of how much weight a ship can carry, not its weight, empty or in any degree of load. DWT is the sum of the weights of cargo, fuel, fresh water, ballast water, provisions, passengers, and crew. DWT is often used to specify a ship's maximum permissible deadweight (i.e. when she is fully loaded so that her Plimsoll line is at water level), although it may also denote the actual DWT of a ship not loaded to capacity. Deadweight
Samuel Plimsoll Samuel Plimsoll Samuel Plimsoll (10 February 1824 – 3 June 1898) was an English politician and social reformer, now best remembered for having devised the Plimsoll line (a line on a ship's hull indicating the maximum safe draft, and therefore the minimum freeboard for the vessel in various operating conditions). Samuel Plimsoll was born in Bristol and soon moved to Whiteley Wood Hall, Sheffield, also spending part of his childhood in Penrith, Cumberland. Leaving school at an early age, he became a clerk at Rawson's Brewery, and rose to be manager. In 1853, he attempted to become a coal merchant