The list of shipwrecks in the Channel Islands lists some of the ships that wrecked on or sank in the waters of the Bailiwick of Guernsey and the Bailiwick of Jersey. The list includes ships that sustained a damaged hull, which were later refloated and repaired. There are at least 700 identified shipwrecks and another 100 unidentified, in Bailiwick of Guernsey waters alone. Jersey experiences some of the largest tidal ranges in the world, up to 12 metres; Guernsey has slightly less dramatic tides. The mass of water moving in and out gives rise to fast moving currents. Alderney has the Alderney Race, which can run up to about twelve knots during equinoctial tides. These combined with the numerous smaller islands, offshore reefs, and isolated rocks extending up to from the main islands, as well as the Islands' location close to the English Channelshipping channels, has resulted in thousands of shipwrecks over the centuries. The Bailiwick of Guernsey comprises the islands of Guernsey, Alderney, Sark, Herm and a number of smaller islands, islets and rocks. See List of islands of the Bailiwick of Guernsey for a complete list of their smaller islands. Les Casquets or Casquets ; is a group of rocks 13 km west of Alderney and are part of an underwater sandstone ridge. Other parts which emerge above the water are the islets of Burhou and Ortac. Little vegetation grows on them. The Bailiwick of Jersey comprises the island of Jersey and a number of smaller islets and rocks, most of which are covered at high tide. See List of islands of the Bailiwick of Jersey for a complete list of their smaller islands. Les Écréhous NE of Jersey consists of two reefs which form an extensive shoal area long and wide. Les Minquiers S of Jersey, its largest island is only 50 metres by 20 metres, but at low water, Les Minquiers has a land areagreater than 100km². The deliberate wrecking of ships has not been a Channel Islandtrait, although the recovery of goods from a natural wreck has always been undertaken. Smuggling and Privateer's have abounded in the Islands' waters over many centuries. Modern navigation systems have helped reduce the number of disasters, but shipping still receive warnings of waters around the Channel Islands
