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
HMS Skipjack (1889) minesweepers attached to the Grand Fleet, including "Skipjack" were employed on carrying out daily sweeps of the Pentland Firth. In early October 1914, as part of expensive Grand Fleet operations to protect a large convoy carrying Canadian troops across the Atlantic to England, "Skipjack" was led eight minesweeping gunboats on patrols between the Orkneys and the Shetlands. On 27 October, the battleship struck a mine off Tory Island, north-west of Lough Swilly, and despite efforts to tow her to safety, sank later that day. As a result, "Skipjack" together with sister ships and were ordered from Scapa Flow to join