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) Atlantic transit. Down in the subsurface calm, the crew were hardly even aware of the turbulence above them. After returning to Norfolk, "Skipjack" conducted several exercises with ASW aircraft flying from air bases in Virginia and North Carolina. In these exercises "Skipjack" played the role of a Russian submarine; ASW forces were to locate, track and conduct simulated attacks against the "Skipjack". During the exercise, "Skipjack" was placed under certain handicaps that would not have been present in normal operations; for instance, she was restricted to a designated operating area measuring 20 miles by 10 miles. Also, at that time,