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 naturally-occurring form of crystalline carbon. It is a native element mineral found in metamorphic and igneous rocks. Graphite is a mineral of extremes.It is extremely soft, cleaves with very light pressure and has a very low specific gravity.hat remains is a nearly pure carbon material that crystallizes into mineral graphite. This graphite occurs in seams that correspond to the original layer of coal. When mined the material is known as amorphous graphite. The word amorphous is actually incorrect in this usage as it does have a crystalline structure.