Canned fish canned tuna is used for sandwiches, 22 percent for salads, and 15 percent for casseroles and dried, packaged meal mixes. Other fish that is canned includes cod, mackerel, herring, and pilchard (a type of sardine). Canned fish Canned fish are fish which have been processed, sealed in an airtight container such as a sealed tin can, and subjected to heat. Canning is a method of preserving food, and provides a typical shelf life ranging from one to five years. Fish have low acidity, levels at which microbes can flourish. From a public safety point of view, foods with low acidity
USS Skipjack (SSN-585) before returning to Groton. In January 1962, "Skipjack" operated out of Key West, Florida, for two weeks before entering the Portsmouth Naval Shipyard in Maine for extensive overhaul, lasting four and one-half months. Following her return to New London, Connecticut, the submarine operated locally prior to departing in October for duty in the Mediterranean with the Sixth Fleet. During this tour, "Skipjack" participated in various fleet and NATO exercises and visited Toulon, France; and La Spezia and Naples, Italy, before returning to New London. In this year, the Skipjack also conducted the fastest submerged transit of the Atlantic Ocean on