Depending on the size of your boat you may need more than one. Boats less than 26' have to have at least one B-1 fire extinguisher on board. Boats 26'-40' need to have at least two B-1 fire extinguishers on board.
Graphite is an electric conductor, consequently, useful in such applications as arc lamp electrodes. It can conduct electricity due to the vast electron delocalization within the carbon layers (a phenomenon called aromaticity).
Graphite is a soft, crystalline polymorph of carbon, and while it shares the same chemistry as diamond the two have very different physical properties (see diamond for examples).Graphite exhibits both metallic and non-metallic properties.raphite is a soft, crystalline polymorph of carbon, and while it shares the same chemistry as diamond the two have very different physical properties (see diamond for examples).