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Seven Stones Reef
The Seven Stones reef is a rocky reef nearly west-northwest (WNW) of Land's End, Cornwall and east-northeast (ENE) of the Isles of Scilly. The reef consists of two groups of rocks and is nearly long and in breadth. They rise out of deep water and are a navigational hazard for shipping with 71 named wrecks and an estimated 200 shipwrecks overall. The most infamous is the ''Torrey Canyon'' in 1967, which was at that time the world's costliest shipping disaster, and to date, still the worst oil spill on the coast of the United Kingdom. The Sevenstones lightvessel has been situated to the east of the reef since 1841, to warn ships of the danger and to mark the western boundary of a major north/south shipping route between the Isles of Scilly and the Cornish coast. An automatic weather station is on the lightvessel. Geography Situated between Cornwall and the Isles of Scilly, the Seven Stones reef consists of seven (or eight) peaks, some of which appear at half ebb and others at l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reef
A reef is a ridge or shoal of rock, coral or similar relatively stable material, lying beneath the surface of a natural body of water. Many reefs result from natural, abiotic processes— deposition of sand, wave erosion planing down rock outcrops, etc.—but there are also reefs such as the coral reefs of tropical waters formed by biotic processes dominated by corals and coralline algae, and artificial reefs such as shipwrecks and other anthropogenic underwater structures may occur intentionally or as the result of an accident, and sometimes have a designed role in enhancing the physical complexity of featureless sand bottoms, to attract a more diverse assemblage of organisms. Reefs are often quite near to the surface, but not all definitions require this. Earth's largest coral reef system is the Great Barrier Reef in Australia, at a length of over . Biotic There is a variety of biotic reef types, including oyster reefs and sponge reefs, but the most massive and widely ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crayfish
Crayfish are freshwater crustaceans belonging to the clade Astacidea, which also contains lobsters. In some locations, they are also known as crawfish, craydids, crawdaddies, crawdads, freshwater lobsters, mountain lobsters, rock lobsters, mudbugs, baybugs or yabbies. Taxonomically, they are members of the superfamilies Astacoidea and Parastacoidea. They breathe through feather-like gills. Some species are found in brooks and streams, where fresh water is running, while others thrive in swamps, ditches, and paddy fields. Most crayfish cannot tolerate polluted water, although some species, such as ''Procambarus clarkii'', are hardier. Crayfish feed on animals and plants, either living or decomposing, and detritus. The term "crayfish" is applied to saltwater species in some countries. Terminology The name "crayfish" comes from the Old French word ' (Modern French '). The word has been modified to "crayfish" by association with "fish" (folk etymology). The largely American ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trinity House
"Three In One" , formation = , founding_location = Deptford, London, England , status = Royal Charter corporation and registered charity , purpose = Maintenance of lighthouses, buoys and beacons , headquarters = Trinity House, Tower Hill, London, England , region = , membership = , leader_title = Master , leader_name = Anne, Princess Royal , leader_title2 = Deputy Master , leader_name2 = Captain Ian McNaught , revenue = £38,405,000 (2020) , expenses = £46,801,000 (2020) , staff = 312 (2020) , website trinityhouse.co.uk The Corporation of Trinity House of Deptford Strond, also known as Trinity House (and formally as The Master, Wardens and Assistants of the Guild Fraternity or Brotherhood of the most glorious and undivided Trinity and of St Clement in the Parish of Deptford Strond in the County of Kent), is the offi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Longships, Cornwall
The Longships is the name given to a group of rocky islets situated approximately 1 miles (2 km) west of Land's End, Cornwall, United Kingdom. The islets are marked by the Longships Lighthouse, the current structure being first lit in December 1873. The islets are very popular for recreational diving, the sea has clear water with prolific marine life and flora. Geography The Longships lie off the granite headland of Land's End and the contact area between the granite pluton and the ″country rocks″ is just offshore. The reef is within a metamorphic aureole formed after the granite intruded the earlier Devonian rocks between 268 and 275 million years ago, during the Permian period. Much of the Longship group is submerged at high water but the three largest islets in the group – Tal-y-Maen, Carn Bras, and Meinek – remain above the high water mark. Two smaller rocks known as Kettle's Bottom are situated midway between Longship and the coast. The Longships islets ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Topmast
The masts of traditional sailing ships were not single spars, but were constructed of separate sections or masts, each with its own rigging. The topmast is one of these. The topmast is semi-permanently attached to the upper front of the lower mast, at the top. Its shrouds run to the edges of the top, rather than to the sides of the hull, though long shrouds leading well aft to the hull, more in the manner of backstays, are sometimes seen. In accordance with the standard square rig sail plan, the topmast carries the topsail. In the late 19th century, however, topsails became so big that merchant ships began to divide them into two separate sails for easier handling; since these were still on the topmast they were known as upper and lower topsails to preserve the consistency of the naming scheme. The majority of large square-riggers today carry separate upper and lower topsails. The main topmast carries the upper end of the main-topmast-staysail; a mizzen-topmast may carry the e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sixth-rate
In the rating system of the Royal Navy used to categorise sailing warships, a sixth-rate was the designation for small warships mounting between 20 and 28 carriage-mounted guns on a single deck, sometimes with smaller guns on the upper works and sometimes without. It thus encompassed ships with up to 30 guns in all. In the first half of the 18th century the main battery guns were 6-pounders, but by mid-century these were supplanted by 9-pounders. 28-gun sixth rates were classed as frigates, those smaller as 'post ships', indicating that they were still commanded by a full ('post') captain, as opposed to sloops of 18 guns and less under commanders. Rating Sixth-rate ships typically had a crew of about 150–240 men, and measured between 450 and 550 tons. A 28-gun ship would have about 19 officers; commissioned officers would include the captain, and two lieutenants; warrant officers would include the master, ship's surgeon, and purser. The other quarterdeck officers were the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bristol
Bristol () is a city, ceremonial county and unitary authority in England. Situated on the River Avon, it is bordered by the ceremonial counties of Gloucestershire to the north and Somerset to the south. Bristol is the most populous city in South West England. The wider Bristol Built-up Area is the eleventh most populous urban area in the United Kingdom. Iron Age hillforts and Roman villas were built near the confluence of the rivers Frome and Avon. Around the beginning of the 11th century, the settlement was known as (Old English: 'the place at the bridge'). Bristol received a royal charter in 1155 and was historically divided between Gloucestershire and Somerset until 1373 when it became a county corporate. From the 13th to the 18th century, Bristol was among the top three English cities, after London, in tax receipts. A major port, Bristol was a starting place for early voyages of exploration to the New World. On a ship out of Bristol in 1497, John Cabot, a Venetia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frigates
A frigate () is a type of warship. In different eras, the roles and capabilities of ships classified as frigates have varied somewhat. The name frigate in the 17th to early 18th centuries was given to any full-rigged ship built for speed and maneuverability, intended to be used in scouting, escort and patrol roles. The term was applied loosely to ships varying greatly in design. In the second quarter of the 18th century, the 'true frigate' was developed in France. This type of vessel was characterised by possessing only one armed deck, with an unarmed deck below it used for berthing the crew. Late in the 19th century (British and French prototypes were constructed in 1858), armoured frigates were developed as powerful ironclad warships, the term frigate was used because of their single gun deck. Later developments in ironclad ships rendered the frigate designation obsolete and the term fell out of favour. During the Second World War the name 'frigate' was reintroduced to des ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spain
, image_flag = Bandera de España.svg , image_coat = Escudo de España (mazonado).svg , national_motto = ''Plus ultra'' (Latin)(English: "Further Beyond") , national_anthem = (English: "Royal March") , image_map = , map_caption = , image_map2 = , capital = Madrid , coordinates = , largest_city = Madrid , languages_type = Official language , languages = Spanish language, Spanish , ethnic_groups = , ethnic_groups_year = , ethnic_groups_ref = , religion = , religion_ref = , religion_year = 2020 , demonym = , government_type = Unitary state, Unitary Parliamentary system, parliamentary constitutional monarchy , leader_title1 = Monarchy of Spain, Monarch , leader_name1 = Felipe VI , leader_title2 = Prime Minister of Spain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Men-of-war
The man-of-war (also man-o'-war, or simply man) was a Royal Navy expression for a powerful warship or frigate from the 16th to the 19th century. Although the term never acquired a specific meaning, it was usually reserved for a ship armed with cannon and propelled primarily by sails, as opposed to a galley which is propelled primarily by oars. Description The man-of-war was developed in Portugal in the early 15th century from earlier roundships with the addition of a second mast to form the carrack. The 16th century saw the carrack evolve into the galleon and then the ship of the line. The evolution of the term has been given thus: The man-of-war design developed by John Hawkins (naval commander), Sir John Hawkins had three masts, each with three to four sails. The ship could be up to 60 metres long and could have up to 124 guns: four at the bow, eight at the stern, and 56 in each broadside. All these cannons required three gun decks to hold them, one more than any earlier ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nairn
Nairn (; gd, Inbhir Narann) is a town and royal burgh in the Highland council area of Scotland. It is an ancient fishing port and market town around east of Inverness, at the point where the River Nairn enters the Moray Firth. It is the traditional county town of Nairnshire. At the 2011 census, Nairn had a population of 9,773, making it the third-largest settlement in the Highland council area, behind Inverness and Fort William. Nairn is best known as a seaside resort, with two golf courses, award-winning beaches, a community centre and arts venue, a small theatre (called The Little Theatre) and one small museum, providing information on the local area and incorporating the collection of the former Fishertown museum. History The History of Nairn is a broad and diverse topic spanning its Palaeolithic and Mesolithic roots before recorded history, to the Picts and the visitation of Roman general Agriocola. Its possible founding under the name Ekkailsbakki by Sigurd, Earl of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plumose Anemone
Members of the genus ''Metridium'', also known as plumose anemones, are sea anemones found mostly in the cooler waters of the northern Pacific and Atlantic oceans. They are characterized by their numerous threadlike tentacles extending from atop a smooth cylindrical column, and can vary from a few centimeters in height up to one meter or more. In larger specimens, the oral disk becomes densely curved and frilly. Species The following species are recognised in the World Register of Marine Species (WoRMS): *''Metridium canum'' Frederick George Albert Stuckey, Stuckey, 1914 *''Metridium dianthus'' Ellis, 1768 *''Metridium exile'' Hand, 1956 *''Metridium farcimen'' (Wilhelm Gottlieb Tilesius von Tilenau, Tilesius, 1809) – giant plumose anemone or white-plumed anemone *''Metridium huanghaiensis'' Pei, 1998 *''Metridium senile'' (Linnaeus, 1761) – frilled anemone *''Metridium sinensis'' Pei, 1998 References External linksVideos of the Metridium Fields in Monterey, CA]Photos [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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