|
Air Draft
Air draft (or air draught) is the distance from the surface of the water to the highest point on a vessel. This is similar to the " deep draft" of a vessel which is measured from the surface of the water to the deepest part of the hull below the surface, but air draft is expressed as a height, not a depth. Clearance below The vessel's " clearance" is the distance in excess of the air draft which allows a vessel to pass safely under a bridge or obstacle such as power lines, etc. A bridge's "clearance below" is most often noted on charts as measured from the surface of the water to the under side of the bridge at the chart datum Mean High Water (MHW), a less restrictive clearance than Mean Higher High Water (MHHW). In 2014, the United States Coast Guard reported that 1.2% of the collisions it investigated in the recent past were due to vessels attempting to pass underneath structures with insufficient clearance. Examples The Bridge of the Americas in Panama limits which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allanburg Bridge
Bridge 11, also known as the Allanburg Bridge, is a vertical-lift bridge over the Welland Canal within the City of Thorold and community of Allanburg, Ontario, Canada. The location was used for the groundbreaking ceremony for the canal. It was constructed and completed in 1930. The bridge carries Hwy 20 connecting Niagara Falls to Fonthill. The bridge has a main span. It was designed by Harrington, Howard & Ash, the predecessor of HNTB. It was rehabilitated in 2001 and is a through-truss vertical-lift bridge with clearance for shipping. On August 11, 2001, the bridge was struck by the MS Windoc (1959) MS ''Windoc'' was a lake freighter or laker, initially constructed as an ocean-going bulk carrier in West Germany in 1959. Entering service that year as ''Rhine Ore'', the ship was renamed ''Steelcliffe Hall'' in 1977 and reconstructed as a laker ... when the lift span was lowered before the ship cleared the structure. The ship caught fire. After minor repairs to the bridge, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panama Canal Expansion Project
The Panama Canal expansion project ( es, ampliación del Canal de Panamá), also called the Third Set of Locks Project, doubled the capacity of the Panama Canal by adding a new lane of traffic allowing for a larger number of ships, and increasing the width and depth of the lanes and locks allowing larger ships to pass. The new ships, called New Panamax, are about one and a half times the previous Panamax size and can carry over twice as much cargo. The expanded canal began commercial operation on 26 June 2016. The project has: * Built two new sets of locks, one each on the Atlantic and Pacific sides, and excavated new channels to the new locks. * Widened and deepened existing channels. * Raised the maximum operating water level of Gatun Lake. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cargo Ship
A cargo ship or freighter is a merchant ship that carries cargo, goods, and materials from one port to another. Thousands of cargo carriers ply the world's seas and oceans each year, handling the bulk of international trade. Cargo ships are usually specially designed for the task, often being equipped with cranes and other mechanisms to load and unload, and come in all sizes. Today, they are almost always built of welded steel, and with some exceptions generally have a life expectancy of 25 to 30 years before being scrapped. Definitions The words ''cargo'' and ''freight'' have become interchangeable in casual usage. Technically, "cargo" refers to the goods carried aboard the ship for hire, while "freight" refers to the act of carrying of such cargo, but the terms have been used interchangeably for centuries. Generally, the modern ocean shipping business is divided into two classes: # Liner business: typically (but not exclusively) container vessels (wherein "general cargo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tower Bridge
Tower Bridge is a Grade I listed combined bascule and suspension bridge in London, built between 1886 and 1894, designed by Horace Jones and engineered by John Wolfe Barry with the help of Henry Marc Brunel. It crosses the River Thames close to the Tower of London and is one of five London bridges owned and maintained by the Bridge House Estates, a charitable trust founded in 1282. The bridge was constructed to give better access to the East End of London, which had expanded its commercial potential in the 19th century. The bridge was opened by Edward, Prince of Wales and Alexandra, Princess of Wales in 1894. The bridge is in length and consists of two bridge towers connected at the upper level by two horizontal walkways, and a central pair of bascules that can open to allow shipping. Originally hydraulically powered, the operating mechanism was converted to an electro-hydraulic system in 1972. The bridge is part of the London Inner Ring Road and thus the boundary of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Structure Gauge
A structure gauge, also called the minimum clearance outline, is a diagram or physical structure that sets limits to the extent that bridges, tunnels and other infrastructure can encroach on rail vehicles. It specifies the height and width of platforms, tunnels and bridges, and the width of the doors that allow access to a warehouse from a rail siding. Specifications may include the minimum distance from rail vehicles to railway platforms, buildings, electrical equipment boxes, signal equipment, third rails or supports for overhead lines. A related but separate gauge is the loading gauge: a diagram or physical structure that defines the maximum height and width dimensions in railway vehicles and their loads. The difference between these two gauges is called the clearance. The specified amount of clearance makes allowance for wobbling of rail vehicles at speed; consequently, in some circumstances a train may be permitted to go past a restricted clearance at very slow speed. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bayonne Bridge
Bayonne Bridge is an arch bridge spanning the Kill Van Kull and connecting Bayonne, New Jersey with Staten Island in New York City. It carries New York State Route 440 (NY 440) and New Jersey Route 440. It is the sixth-longest steel arch bridge in the world, and it was the longest in the world at the time of its completion. The bridge is also one of four connecting New Jersey with Staten Island; the other two roadway bridges are the Goethals Bridge in Elizabeth and Outerbridge Crossing (which also carries Route 440) in Perth Amboy, and the rail-only span is the Arthur Kill Vertical Lift Bridge, all of which cross the Arthur Kill. The original roadway carried two lanes of motor traffic in each direction, as well as a walkway. Completed in 1931, the Bayonne Bridge was built by the Port Authority of New York and New Jersey, which still operates the bridge. It was designed by Swiss master bridge-builder Othmar Ammann and architect Cass Gilbert. A project ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suez Canal Bridge
The Suez Canal Bridge, also known as the Egyptian–Japanese Friendship Bridge, Al Salam Bridge, Al Salam Peace Bridge or Mubarak Peace Bridge, is a road bridge crossing the Suez Canal at El-Qantara, whose name means "the bridge" in Egyptian Arabic. The bridge links the continents of Africa and Asia. Design and construction The bridge was built with assistance from the Japanese government. The main contractor was Kajima Corporation. The Japanese grant, accounting for 60% of the construction cost (or 13.5 billion yen), was agreed to during the visit of then-President Hosni Mubarak to Japan in March 1995, as part of a larger project to develop the Sinai Peninsula. Egypt bore the remaining 40% (9 billion yen). The bridge was opened in October 2001. The bridge, which has a clearance over the canal and is long, consists of a cable-stayed main span and two long approach spans. The height of the two main pylons supporting the main span is each. The towers were designed in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Container Ship
A container ship (also called boxship or spelled containership) is a cargo ship that carries all of its load in truck-size intermodal containers, in a technique called containerization. Container ships are a common means of commercial intermodal freight transport and now carry most seagoing non-bulk cargo. Container ship capacity is measured in twenty-foot equivalent units (TEU). Typical loads are a mix of 20-foot (1-TEU) and 40-foot (2-TEU) ISO-standard containers, with the latter predominant. Today, about 90% of non-bulk cargo worldwide is transported by container ships, and the largest modern container ships can carry up to 24,000 TEU (e.g., '' Ever Ace''). Container ships now rival crude oil tankers and bulk carriers as the largest commercial seaborne vessels. History There are two main types of dry cargo: bulk cargo and break bulk cargo. Bulk cargoes, like grain or coal, are transported unpackaged in the hull of the ship, generally in large volume. Break-bulk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Belt Fixed Link
The Great Belt Bridge ( da, Storebæltsbroen) or Great Belt fixed link ( da, Storebæltsforbindelsen) is a multi-element fixed link crossing the Great Belt strait between the Danish islands of Zealand and Funen. It consists of a road suspension bridge and a railway tunnel between Zealand and the small island Sprogø in the middle of the Great Belt, and a box-girder bridge for both road and rail traffic between Sprogø and Funen. The total length is . The term ''Great Belt Bridge'' commonly refers to the suspension bridge, although it may also be used to mean the box-girder bridge or the link in its entirety. Officially named the East Bridge, the suspension bridge was designed by the Danish firms COWI and Ramboll, and the architecture firm Dissing+Weitling. It has the world's sixth- longest main span (). At the time of the opening of the bridge it was the second longest, beaten by the Akashi Kaikyō Bridge opened a few months previously. The link replaced the Great Belt ferri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridge Of The Americas
The Bridge of the Americas ( es, Puente de las Américas; originally known as the Thatcher Ferry Bridge) is a road bridge in Panama which spans the Pacific entrance to the Panama Canal. Designed by Sverdrup & Parcel, it was completed in 1962 at a cost of US$20 million, connecting the north and south American land masses. Two other bridges cross the canal: the Atlantic Bridge at the Gatun locks and the Centennial Bridge. Description The Bridge of the Americas crosses the Pacific approach to the Panama Canal at Balboa, near Panama City. It was built between 1959 and 1962 by the United States at a cost of US$20 million. From its completion in 1962 until the opening of the parallel Centennial Bridge in 2004, the Bridge of the Americas was a key part of the Pan-American Highway. The Bridge of the Americas greatly increases road traffic capacity across the Canal. Two earlier bridges cross the Canal, but they use moveable designs and have limited traffic capacity. These earlie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine Vessel
Any vehicle used in or on water as well as underwater, including boats, ships, hovercraft and submarines, is a watercraft, also known as a water vessel or waterborne vessel. A watercraft usually has a propulsive capability (whether by sail, oar, paddle, or engine) and hence is distinct from a stationary device, such as a pontoon, that merely floats. Types Most watercraft may be described as either a ship or a boat. However, numerous items, including surfboards, underwater robots, seaplanes and torpedoes, may be considered neither ships nor boats. Although ships are typically larger than boats, the distinction between those two categories is not one of size per se. *Ships are typically large ocean-going vessels; whereas boats are smaller, and typically travel most often on inland or coastal waters. *A rule of thumb says "a boat can fit on a ship, but a ship can't fit on a boat", and a ship ''usually'' has sufficient size to carry its own boats, such as lifeboats, dingh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Coast Guard
The United States Coast Guard (USCG) is the maritime security, search and rescue, and law enforcement service branch of the United States Armed Forces and one of the country's eight uniformed services. The service is a maritime, military, multi-mission service unique among the United States military branches for having a maritime law enforcement mission with jurisdiction in both domestic and international waters and a federal regulatory agency mission as part of its duties. It is the largest and most powerful coast guard in the world, rivaling the capabilities and size of most navies. The U.S. Coast Guard is a humanitarian and security service. It protects the United States' borders and economic and security interests abroad; and defends its sovereignty by safeguarding sea lines of communication and commerce across vast territorial waters spanning 95,000 miles of coastline and its Exclusive Economic Zone. With national and economic security depending upon open globa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Marine Vessel")
