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CGS Petrel
CGS ''Petrel'' was a Canadian patrol vessel used primarily for fisheries protection on the upper Great Lakes from 1892 to 1904. In 1904, ''Petrel'' was sent to the East Coast of Canada for fisheries protection duties there. In 1912, ''Petrel'' was fitted for minesweeping and in 1914, was taken over by the Royal Canadian Navy for use as an examination vessel during the First World War. Following the war, ''Petrel'' was discarded. Description ''Petrel'' was the third vessel in her class, her sister ships being and . ''Petrel'' was slightly larger than her sister ships, being long with a beam and a draught of . The vessel had a tonnage of . The vessel was powered by a compound steam engine driving one screw creating (nominal). This gave the vessel a maximum speed of . The ship was armed with one QF 12-pounder 12 cwt naval gun and three machine guns. Service history In 1888, a treaty to combat illegal fishing in Canadian waters between Canada and the United States was rejected ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polson Iron Works Limited
The Polson Iron Works was an Ontario-based firm which built large steam engines, as well as ships, barges and dredges. Founded by William Polson (1834–1901) and son Franklin Bates Polson, the firm was incorporated in 1886 and it was one of the original shipyards operating in Toronto. In 1888 favourable land grants prompted the company to move to Owen Sound, which was then an important port for Canadian Pacific's steamships. The firm eventually returned to Toronto in 1897 when Owen Sound's town council did not renew the firm's exemption from property taxes. In Toronto the company's ship yard was located on the harbourfront at the foot of Sherbourne Street. In 1914 the company agreed to lease land from the Toronto Harbour Commission to build a new facility in the newly reclaimed Portlands industrial district, but the outbreak of World War I prevented the move. Some of the vessels constructed by the Polson Iron Works remain in service today. They include , and . The engines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compound Steam Engine
A compound steam engine unit is a type of steam engine where steam is expanded in two or more stages. A typical arrangement for a compound engine is that the steam is first expanded in a high-pressure ''(HP)'' cylinder, then having given up heat and losing pressure, it exhausts directly into one or more larger-volume low-pressure ''(LP)'' cylinders. Multiple-expansion engines employ additional cylinders, of progressively lower pressure, to extract further energy from the steam. Invented in 1781, this technique was first employed on a Cornish beam engine in 1804. Around 1850, compound engines were first introduced into Lancashire textile mills. Compound systems There are many compound systems and configurations, but there are two basic types, according to how HP and LP piston strokes are phased and hence whether the HP exhaust is able to pass directly from HP to LP ( Woolf compounds) or whether pressure fluctuation necessitates an intermediate "buffer" space in the form of a st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrophone
A hydrophone ( grc, ὕδωρ + φωνή, , water + sound) is a microphone designed to be used underwater for recording or listening to underwater sound. Most hydrophones are based on a piezoelectric transducer that generates an electric potential when subjected to a pressure change, such as a sound wave. Some piezoelectric transducers can also serve as a sound projector, but not all have this capability, and some may be destroyed if used in such a manner. A hydrophone can detect airborne sounds, but will be insensitive because it is designed to match the acoustic impedance of water, a denser fluid than air. Sound travels 4.3 times faster in water than in air, and a sound wave in water exerts a pressure 60 times that exerted by a wave of the same amplitude in air. Similarly, a standard microphone can be buried in the ground, or immersed in water if it is put in a waterproof container, but will give poor performance due to the similarly bad acoustic impedance match. History The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine
A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely operated vehicles and Autonomous underwater vehicle, robots, as well as medium-sized or smaller vessels, such as the midget submarine and the wet sub. Submarines are referred to as ''boats'' rather than ''ships'' irrespective of their size. Although experimental submarines had been built earlier, submarine design took off during the 19th century, and they were adopted by several navies. They were first widely used during World War I (1914–1918), and are now used in many navy, navies, large and small. Military uses include attacking enemy surface ships (merchant and military) or other submarines, and for aircraft carrier protection, Blockade runner, blockade running, Ballistic missile submarine, nuclear deterrence, reconnaissance, conventio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grand Manan
Grand Manan is a Canadian island in the Bay of Fundy. Grand Manan is also the name of an incorporated village, which includes the main island and all of its adjacent islands, except White Head Island. It is governed as a village and is part of the province of New Brunswick. The point on the mainland closest to the island is near the town of Lubec, Maine, the easternmost point of the continental United States, across the Grand Manan Channel. Grand Manan is 32 kilometres south of Blacks Harbour, New Brunswick. Toponymy "Manan" is a corruption of ''mun-an-ook'' or ''man-an-ook'', meaning "island place" or "the island", from the Maliseet-Passamaquoddy-Penobscot First Nations who, according to oral history, used Grand Manan and its surrounding islands as a safe place for the elderly Passamaquoddy during winter months and as a sacred burial place (''ook'' means "people of"). In 1606 Samuel de Champlain sheltered on nearby White Head Island and produced a map calling the island "Manth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schooner
A schooner () is a type of sailing vessel defined by its rig: fore-and-aft rigged on all of two or more masts and, in the case of a two-masted schooner, the foremast generally being shorter than the mainmast. A common variant, the topsail schooner also has a square topsail on the foremast, to which may be added a topgallant. Differing definitions leave uncertain whether the addition of a fore course would make such a vessel a brigantine. Many schooners are gaff-rigged, but other examples include Bermuda rig and the staysail schooner. The origins of schooner rigged vessels is obscure, but there is good evidence of them from the early 17th century in paintings by Dutch marine artists. The name "schooner" first appeared in eastern North America in the early 1700s. The name may be related to a Scots word meaning to skip over water, or to skip stones. The schooner rig was used in vessels with a wide range of purposes. On a fast hull, good ability to windward was useful for priv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East Coast Of Canada
Atlantic Canada, also called the Atlantic provinces (french: provinces de l'Atlantique), is the region of Eastern Canada comprising the provinces located on the Atlantic coast, excluding Quebec. The four provinces are New Brunswick, Newfoundland and Labrador, Nova Scotia, and Prince Edward Island. As of 2021, the landmass of the four Atlantic provinces was approximately 488,000 km2, and had a population of over 2.4 million people. The provinces combined had an approximate GDP of $121.888 billion in 2011. The term ''Atlantic Canada'' was popularized following the admission of Newfoundland as a Canadian province in 1949. History The first premier of Newfoundland, Joey Smallwood, coined the term "Atlantic Canada" when Newfoundland joined Canada in 1949. He believed that it would have been presumptuous for Newfoundland to assume that it could include itself within the existing term "Maritime provinces," used to describe the cultural similarities shared by New Brunswick, Prince ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erie, Pennsylvania
Erie (; ) is a city on the south shore of Lake Erie and the county seat of Erie County, Pennsylvania, United States. Erie is the fifth largest city in Pennsylvania and the largest city in Northwestern Pennsylvania with a population of 94,831 at the 2020 census. The estimated population in 2021 had decreased to 93,928. The Erie metropolitan area, equivalent to all of Erie County, consists of 266,096 residents. The Erie-Meadville combined statistical area had a population of 369,331 at the 2010 census. Erie is roughly equidistant from Buffalo and Cleveland, each being about 100 miles (160 kilometers) away. Erie's manufacturing sector remains prominent in the local economy, though insurance, healthcare, higher education, technology, service industries, and tourism are emerging as significant economic drivers. As with the other Great Lakes port cities, Erie is accessible to the oceans via the Lake Ontario and St. Lawrence River network in Canada. The local climate is humid, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Erie
Lake Erie ( "eerie") is the fourth largest lake by surface area of the five Great Lakes in North America and the eleventh-largest globally. It is the southernmost, shallowest, and smallest by volume of the Great Lakes and therefore also has the shortest average water residence time. At its deepest point Lake Erie is deep. Situated on the International Boundary between Canada and the United States, Lake Erie's northern shore is the Canadian province of Ontario, specifically the Ontario Peninsula, with the U.S. states of Michigan, Ohio, Pennsylvania, and New York on its western, southern, and eastern shores. These jurisdictions divide the surface area of the lake with water boundaries. The largest city on the lake is Cleveland, anchoring the third largest U.S. metro area in the Great Lakes region, after Greater Chicago and Metro Detroit. Other major cities along the lake shore include Buffalo, New York; Erie, Pennsylvania; and Toledo, Ohio. Situated below Lake Huron, Erie's p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Long Point, Ontario
Long Point is a sand spit and medium-sized hamlet on the north shore of Lake Erie, part of Norfolk County in the province of Ontario, Canada. It is about long and is about across at its widest point. Lake Erie lies to the south of Long Point, and Long Point Bay lies on the north side. The bay is subdivided into the Inner Bay and Outer Bay by a line that runs between Turkey Point to the north and Pottahawk Point to the south. Some of the towns along the bay's north shore include Port Rowan, Turkey Point and Port Dover. Long Point is north of and across the lake from Presque Isle and Erie, Pennsylvania. History Settlers from Europe began arriving in this area in 1790. After the American Revolution, many Loyalists began to settle here but after 1796, land was given to anyone who was capable of developing it. The first lighthouse was built in 1830. In the 19th century, a powerful storm cut an opening through the middle of Long Point. A lighthouse was built alongside the ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Navy
The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against France. The modern Royal Navy traces its origins to the early 16th century; the oldest of the UK's armed services, it is consequently known as the Senior Service. From the middle decades of the 17th century, and through the 18th century, the Royal Navy vied with the Dutch Navy and later with the French Navy for maritime supremacy. From the mid 18th century, it was the world's most powerful navy until the Second World War. The Royal Navy played a key part in establishing and defending the British Empire, and four Imperial fortress colonies and a string of imperial bases and coaling stations secured the Royal Navy's ability to assert naval superiority globally. Owing to this historical prominence, it is common, even among non-Britons, to ref ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Tupper
Sir Charles Tupper, 1st Baronet, (July 2, 1821 – October 30, 1915) was a Canadian Father of Confederation who served as the sixth prime minister of Canada from May 1 to July 8, 1896. As the premier of Nova Scotia from 1864 to 1867, he led Nova Scotia into Confederation. He briefly served as the Canadian prime minister, from seven days after parliament had been dissolved, until he resigned on July 8, 1896 following his party's loss in the 1896 Canadian federal election. His 69-day tenure as prime minister is the shortest in Canadian history. Tupper was born in Amherst, Nova Scotia to the Rev. Charles Tupper and Miriam Lockhart. He was educated at Horton Academy, Wolfville, Nova Scotia, and studied medicine at the University of Edinburgh Medical School, graduating MD in 1843. By the age of 22 he had handled 116 obstetric cases. He practiced medicine periodically throughout his political career (and served as the first president of the Canadian Medical Association). He entered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
