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. Graphite is a soft crystalline form of carbon (atomic number 6) and its symbol is C; other forms are diamond and fullerenes (buckyballs). It is gray to black, opaque, has a metallic luster, and has a black streak. (Streak is the color of a mineral when it is crushed to a powder).raphite is a soft crystalline form of carbon (atomic number 6) and its symbol is C; other forms are diamond and fullerenes (buckyballs). It is gray to black, opaque, has a metallic luster, and has a black streak.