If you get what you pay for with marine fire extinguishers, then a cheap fix could put you in a bad fix in an emergency. Stay certified and safe with Sea-Fire's C-series fire extinguishers. The C-series has U.S. Coast Guard B-1 type approval and complies with all government regulations. More importantly to you, it can take care of fires with its FM-200 gaseous extinguishing agent, and it won't leave messy residue caused by dry powder. Secure it onboard with a marine mounting bracket to hold up against vibration, salt spray and various rough marine conditions. Prices start at $270.