Yes! you may keep older flares on board...usually up to seven years. After that they may be ineffective or deteriorated to the point they could pose a hazard. I believe some of the West Marine stores will take them. DO NOT set them off without USCG or other law enforcement authority unless it is an emergency. That is illegal.
USCG and Solas studies have show that the best way to deploy the meteor flares is to set one off, wait approx. 20 seconds, set of the 2nd, wait another 20 seconds and deploy the third. It takes that many to attract and verify to the viewer that there is an issue needing help. That means you need at least three more to lead people in. Remember the Federal regulations are only MINIMUM requirements.
An example is the fire extinguisher requirement. The regs allow for B-1 BC fire extinguishers. Most of our boats are made up of fiberglass resins, wood, upholstery, curtains...that requires an A rating...different chemical to extinguish. The B is for fuel and flameble fluids, and C is for electrical. So if you have a fire that is started by an electrical issue it will most likely expand to wood, upholstery or fiberglass resins. If you have only BC fire extinguishers, what do you do? Look for a bucket and try to get water? If you have ABC rated extinguishers you can cover all. I have three ABC extinguishers in my R-27. One in the sleeping area in the bow, one in the aft part of the cabin by the sleeping area, and one on the aft bulkhead of the cockpit.
Robert L. Porterfield USCG Auxiliary SO-PV, FSO-PV
Buoy Navigator