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Edmonds Underwater Park

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Edmonds Underwater Park (EUP) is a local classic scuba diving site in the northern Seattle , Washington suburb of Edmonds immediately north of the Edmonds Washington State Ferry terminal on the Edmonds-Kingston route . EUP is relatively shallow with a maximum depth of about 45 feet. There is a grid network of anchored ropes that lead to a variety of submerged features. The park is built and maintained by a group of volunteers that meet every Saturday and Sunday at 9 am.

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67-408: There are several submerged shipwrecks including the large tugboat Triumph. The site is famous for very large ling cod , numerous large cabezon , occasional octopus , many surf perch and rockfish , and a lot of invertebrates . Gray whales have been spotted by divers at this site. Entrance is via moderate surface swims. There is a restroom with diver dressing areas and an outdoor shower that

134-542: A freight rate for commercial gain. The term cargo is also used in case of goods in the cold-chain , because the perishable inventory is always in transit towards a final end-use, even when it is held in cold storage or other similar climate-controlled facilities, including warehouses. Multi-modal container units, designed as reusable carriers to facilitate unit load handling of the goods contained, are also referred to as cargo, especially by shipping lines and logistics operators. When empty containers are shipped each unit

201-730: A glacial-fed lake, Arctic waters, the Great Lakes , etc.) slows the degradation of organic ship materials. Decay, corrosion and marine encrustation are inhibited or largely absent in cold waters. Many modern shipwrecks contribute to marine pollution , mainly as sources of significant oil spills . A 2005 survey of shipwrecks since 1890 found that over 8,500 of the submerged wrecks may still contain oil. Oil spills can have devastating effects on marine and coastal environments as well as fisheries. In addition to being toxic to marine life, polycyclic aromatic hydrocarbons (PAHs), found in crude oil , are very difficult to clean up, and last for years in

268-555: A blanket ban on all diving; for other wrecks divers may visit provided they do not touch, interfere with or penetrate the wreck. In the United States, shipwrecks in state waters are regulated by the Abandoned Shipwrecks Act of 1987. This act is much more lenient in allowing more open access to the shipwrecks. Following the beaching of MSC Napoli , as a result of severe damage incurred during European storm Kyrill , there

335-446: A certain age, the original owner may have lost all claim to the cargo. Anyone who finds the wreck can then file a salvage claim on it and place a lien on the vessel, and subsequently mount a salvage operation (see Finders, keepers ). The State of North Carolina questionably claims "all photographs, video recordings, or other documentary materials of a derelict vessel or shipwreck or its contents, relics, artifacts, or historic materials in

402-436: A country. Therefore, many governments have enacted rules and regulations, administered by a customs agency, for the handling of cargo to minimize risks of terrorism and other crime. Governments are mainly concerned with cargo entering through a country's borders. The United States has been one of the leaders in securing cargo. They see cargo as a concern to national security . After the terrorist attacks of September 11th ,

469-480: A freight broker, online marketplace or another intermediary, instead of contracting directly with a trucking company. Brokers can shop the marketplace and obtain lower rates than most smaller shippers can obtain directly. In the LTL marketplace, intermediaries typically receive 50% to 80% discounts from published rates, whereas a small shipper may only be offered a 5% to 30% discount by the carrier. Intermediaries are licensed by

536-782: A greater or lesser degree in an Australian case and in a Norwegian case. The American courts have been inconsistent between states and at federal level. Under Danish law, all shipwrecks over 150 years old belong to the state if no owner can be found. In Spain, wrecks vest in the state if not salvaged within 3 years. In Finland, all property on board shipwrecks over 100 years old vests in the state. The British Protection of Wrecks Act , enacted to protect historic wrecks, controls access to wrecks such as Cattewater Wreck which can only be visited or investigated under licence. The British Protection of Military Remains Act 1986 also restricts access to wrecks which are sensitive as war graves . The Protection of Military Remains Act in some cases creates

603-454: A large concrete piece that served as a bridge fender. Its dimensions are 100'x 20'x 13' and rest west of the Triumph. It has 5 chambers in which a diver may easily enter. The pontoon will serve well as a habitat for fish, invertebrates, and algae and sea weeds. Cave dive sites: This diving -related article is a stub . You can help Misplaced Pages by expanding it . Shipwreck A shipwreck

670-446: A large number of containers that come from shipping ports. Trains are also used to transport water, cement, grain, steel, wood and coal. They are used because they can carry a large amount and generally have a direct route to the destination. Under the right circumstances, freight transport by rail is more economical and energy efficient than by road, mainly when carried in bulk or over long distances. The main disadvantage of rail freight

737-409: A large opening front for loading. Air freight shipments are very similar to LTL shipments in terms of size and packaging requirements. However, air freight or air cargo shipments typically need to move at much faster speeds than 800 km or 497 mi per hour. While shipments move faster than standard LTL, air shipments do not always actually move by air. Air shipments may be booked directly with

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804-505: A load is limited to the space available in the trailer, normally 48 ft (14.63 m) or 53 ft (16.15 m) long, 2.6 m ( 102 + 3 ⁄ 8  in) wide, 9 ft 0 in (2.74 m) high and 13 ft 6 in or 4.11 m high overall. While express, parcel and LTL shipments are always intermingled with other shipments on a single piece of equipment and are typically reloaded across multiple pieces of equipment during their transport, TL shipments usually travel as

871-399: A mixed-freight environment. Unlike express or parcel, LTL shippers must provide their own packaging, as carriers do not provide any packaging supplies or assistance. However, circumstances may require crating or another substantial packaging. In the United States, shipments larger than about 7,000 kg (15,432 lb) are typically classified as truckload (TL) freight . This is because it

938-451: A ship's crew has died or abandoned the ship, and the ship has remained adrift but unsunk, they are instead referred to as ghost ships . Historic wrecks are attractive to maritime archaeologists because they preserve historical information: for example, studying the wreck of Mary Rose revealed information about seafaring, warfare, and life in the 16th century. Military wrecks, caused by a skirmish at sea, are studied to find details about

1005-456: A shipwreck) and adventurae maris (material still at sea), which are treated differently by some, but not all, legal systems. Wrecks are often considered separately from their cargo. For example, in the British case of Lusitania [1986] QB 384 it was accepted that the remains of the vessel itself were owned by the insurance underwriters who had paid out on the vessel as a total loss by virtue of

1072-753: A treasure almost three miles (16,000 ft; 4,800 m) deep. A U.S. federal court and a panel from the United States Court of Appeals for the Eleventh Circuit have upheld the Spanish claim to the contents of the ship Nuestra Señora de las Mercedes ; Spain took control of the treasure in February 2012. A very small number of coins and effects recovered from the ship were deposited in Gibraltar, because they showed clear signs coherent with an internal explosion on

1139-446: A vessel's holds, but otherwise onto and off its deck, by cranes or derricks present on the dock or on the ship itself. If hoisted on deck instead of straight into the hold, liftable or rolling unit loads, like bags, barrels/vats, boxes, cartons and crates, then have to be man-handled and stowed competently by stevedores . Securing break bulk and general freight inside a vessel, includes the use of dunnage . When no hoisting equipment

1206-535: A wide range in the pricing offered. If a shipper in the United States uses a broker, freight forwarder or another transportation intermediary, it is common for the shipper to receive a copy of the carrier's Federal Operating Authority. Freight brokers and intermediaries are also required by Federal Law to be licensed by the Federal Highway Administration . Experienced shippers avoid unlicensed brokers and forwarders because if brokers are working outside

1273-684: Is Queen Anne's Revenge which is undergoing archaeological recovery by the North Carolina Department of Cultural Resources near Beaufort Inlet, NC. An important international convention aiming at the protection of underwater cultural heritage (including shipwrecks) is the Convention on the Protection of the Underwater Cultural Heritage. The 2001 UNESCO Convention on the Protection of the Underwater Cultural Heritage represents

1340-486: Is an international treaty aimed exclusively at the protection of underwater cultural heritage and the facilitation of international cooperation in this regard. It does not change sovereignty rights of States or regulate the ownership of wrecks or submerged ruins. In 2011, the most valuable cargo of a sunken shipwreck was identified near the western edge of the Celtic Sea . This World War II era sinking of Gairsoppa led to

1407-455: Is available, break bulk would previously be man-carried on and off the ship, over a plank, or by passing via human chain . Since the 1960s, the volume of break bulk cargo has enormously declined worldwide in favour of mass adoption of containers . Bulk cargo , such as salt , oil , tallow , but also scrap metal , is usually defined as commodities that are neither on pallets nor in containers. Bulk cargoes are not handled as individual pieces,

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1474-636: Is documented as a cargo and when goods are stored within, the contents are termed containerized cargo. Similarly, aircraft ULD boxes are also documented as cargo, with an associated packing list of the items contained within. Seaport terminals handle a wide range of maritime cargoes . Break bulk / general cargo are goods that are handled and stowed piecemeal to some degree, as opposed to cargo in bulk or modern shipping containers . Typically bundled in batches for hoisting, either with cargo nets , slings, crates , or stacked on trays, pallets or skids; at best (and today mostly) lifted directly into and out of

1541-408: Is food, as supermarkets require deliveries daily to replenish their shelves with goods. Retailers and manufacturers of all kinds rely upon delivery trucks , be they full size semi trucks or smaller delivery vans . These smaller road haulage companies constantly strive for the best routes and prices to ship out their products. Indeed, the level of commercial freight transported by smaller businesses

1608-401: Is functional when the weather is above freezing . Just north of the ferry terminal is a 300-foot (91.4 m) exclusion zone. The site has a good parking area that fills up early. Numerous restaurants and coffee houses are in the immediate area and a local dive shop is conveniently located south of the park on Railroad Avenue. A new feature was sunk on November 4, 2009. The Lopez Pontoon is

1675-415: Is its lack of flexibility. For this reason, rail has lost much of the freight business to road transport. Rail freight is often subject to transshipment costs, since it must be transferred from one mode of transportation to another. Practices such as containerization aim at minimizing these costs. When transporting point-to-point bulk loads such as cement or grain, with specialised bulk handling facilities at

1742-584: Is more efficient and economical for a large shipment to have exclusive use of one larger trailer rather than share space on a smaller LTL trailer. By the Federal Bridge Gross Weight Formula the total weight of a loaded truck (tractor and trailer, 5-axle rig) cannot exceed 80,000 lb (36,287 kg) in the United States. In ordinary circumstances, long-haul equipment will weigh about 15,000 kg (33,069 lb), leaving about 20,000 kg (44,092 lb) of freight capacity. Similarly

1809-400: Is often a good barometer of healthy economic development as these types of vehicles move and transport anything literally, including couriers transporting parcels and mail. You can see the different types and weights of vehicles that are used to move cargo around . Less than truckload (LTL) cargo is the first category of freight shipment, representing the majority of freight shipments and

1876-541: Is that any such finds and recovery must be reported within 28 days to the Receiver of Wreck . Failure to do so is an offence under the Merchant Shipping Act and can result in a criminal record for theft by finding . After several days, the police and Receiver of Wreck, in conjunction with the landowner and the contracted salvors , established a cordon to prevent access to the beach. A similar situation occurred after

1943-406: Is the historical value of the shipwreck that counts as well as any slight piece of information or evidence that is acquired. Exposed wooden components decay quickly. Often the only wooden parts of ships that remain after a century are those that were buried in silt or sand soon after the sinking. An example of this is Mary Rose . Steel and iron , depending on their thickness, may retain

2010-433: Is the wreckage of a ship that is located either beached on land or sunken to the bottom of a body of water. Shipwrecking may be intentional or unintentional. There were approximately three million shipwrecks worldwide as of January 1999, according to Angela Croome, a science writer and author who specialized in the history of underwater archaeology (an estimate rapidly endorsed by UNESCO and other organizations ). When

2077-528: The Antikythera Mechanism , is perhaps the earliest example of what would be known as today as an analog computer , and the technology it encompasses predates any other recorded description by hundreds or thousands of years. Cargo In transportation , freight refers to goods conveyed by land , water or air , while cargo refers specifically to freight when conveyed via water or air. In economics , freight refers to goods transported at

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2144-485: The Boeing 747 and the more prominent An‑124 , which was purposely built for easy conversion into a cargo aircraft . Such large aircraft employ standardized quick-loading containers known as unit load devices (ULDs), comparable to ISO containers on cargo ships. ULDs can be stowed in the lower decks (front and rear) of several wide-body aircraft , and on the main deck of some narrow-bodies . Some dedicated cargo planes have

2211-508: The Great Lakes of North America, have remained intact with little degradation. In some sea areas, most notably in Gulf of Bothnia and Gulf of Finland , salinity is very low, and centuries-old wrecks have been preserved in reasonable condition. However, bacteria found in fresh water cause the wood on ships to rot more quickly than in seawater unless it is deprived of oxygen. Two shipwrecks, USS  Hamilton and USS  Scourge , have been at

2278-610: The sediment and marine environment. Shipwreck pollution may also originate with a ship's cargo or munitions, such as unexploded ordnance or chemical weapons canisters. German trawler V 1302 John Mahn , sunk in the North Sea in 1942, has multiple unexploded depth charges on board which render the wreck hazardous. Samples taken from the wreck and nearby sediment show the presence of heavy metals like nickel and copper, polycyclic aromatic hydrocarbons , arsenic and explosive compounds into surrounding waters, which have changed

2345-488: The DOT and have the requirements to provide proof of insurance. Truckload (TL) carriers usually charge a rate per kilometre or mile. The rate varies depending on the distance, geographic location of the delivery, items being shipped, equipment type required, and service times required. TL shipments usually receive a variety of surcharges very similar to those described for LTL shipments above. There are thousands more small carriers in

2412-487: The German government, although Nazi Germany (the government at the time) is long-defunct. Many military wrecks are also protected by virtue of being war graves . However, many legal systems allow the rights of salvors to override the rights of the original owners of a wreck or its cargo. As a general rule, non-historic civilian shipwrecks are considered fair game for salvage. Under international maritime law , for shipwrecks of

2479-778: The TL market than in the LTL market. Therefore, the use of transportation intermediaries or brokers is widespread. Another cost-saving method is facilitating pickups or deliveries at the carrier's terminals. Carriers or intermediaries can provide shippers with the address and phone number for the closest shipping terminal to the origin and/or destination. By doing this, shippers avoid any accessorial fees that might normally be charged for liftgate, residential pickup/ delivery , inside pickup/delivery, or notifications/appointments. Shipping experts optimize their service and costs by sampling rates from several carriers, brokers and online marketplaces. When obtaining rates from different providers, shippers may find

2546-509: The artifacts on and around the wreck at Pickles Reef and the over-lapping wrecks at the Molasses Reef Wreck , or contemporary pollution in bodies of water, that severely affect shipwrecks by changing the chemical structures, or further damaging what is left of a specific ship. Despite these challenges, if the information retrieved does not appear to be sufficient, or a poor preservation is achieved, authors like J.A. Parker claim that it

2613-510: The bottom of Lake Ontario since they sunk during a violent storm on August 8, 1813, during the War of 1812 . They are in "remarkably good" condition. Wrecks typically decay rapidly when in seawater . There are several reasons for this: An important factor in the condition of the wreck is the level of destruction at the time of the loss or shortly afterwards due to the nature of the loss, salvage or later demolition. Examples of severe destruction at

2680-550: The carriers, through brokers or with online marketplace services. In the US, there are certain restrictions on cargo moving via air freight on passenger aircraft, most notably the transport of rechargeable lithium-ion battery shipments. Shippers in the US must be approved and be "known" in the Known Shipper Management System before their shipments can be tendered on passenger aircraft. Trains are capable of transporting

2747-549: The catastrophic Titanic , MV Doña Paz , Britannic , Lusitania , Estonia , Empress of Ireland , Andrea Doria , Endurance or Costa Concordia . There are also thousands of wrecks that were not lost at sea but have been abandoned or sunk. These abandoned, or derelict ships are typically smaller craft, such as fishing vessels. They may pose a hazard to navigation and may be removed by port authorities . Poor design, improperly stowed cargo , navigation and other human errors leading to collisions (with another ship,

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2814-590: The custody of any agency of North Carolina government or its subdivisions" to be its property. Some countries assert claims to all wrecks within their territorial waters, irrespective of the interest of the original owner or the salvor. Some legal systems regard a wreck and its cargo to be abandoned if no attempt is made to salvage them within a certain period of time. English law has usually resisted this notion (encouraged by an extremely large maritime insurance industry, which asserts claims in respect of shipwrecks which it has paid claims on), but it has been accepted to

2881-448: The damage of marine creatures that create a home out of them, primarily octopuses and crustaceans. These creatures affect the primary state because they move, or break, any parts of the shipwreck that are in their way, thereby affecting the original condition of amphorae , for example, or any other hollow places. Finally, in addition to the slight or severe destruction marine animals can create, there are also "external" contaminants, such as

2948-813: The historic event; they reveal much about the battle that occurred. Discoveries of treasure ships , often from the period of European colonisation , which sank in remote locations leaving few living witnesses, such as Batavia , do occur as well. Some contemporary wrecks, such as the oil tanker Prestige or Erika , are of interest primarily because of their potential harm to the environment. Other contemporary wrecks are scuttled in order to spur reef growth, such as Adolphus Busch and Ocean Freeze . Many contemporary and historic wrecks, such as Thistlegorm , are of interest to recreational divers that dive to shipwrecks because they are interesting to explore, provide large habitats for many types of marine life, and have an interesting history. Well-known shipwrecks include

3015-434: The international community's response to the increasing looting and destruction of underwater cultural heritage. It forms part of a group of UNESCO standard setting instruments regarding the domain of cultural heritage, encompassing seven conventions adopted by UNESCO Member States, which constitute a coherent and complementary body guaranteeing a complete protection of all forms of cultural heritage. The UNESCO 2001 Convention

3082-522: The law by not having a Federal Operating License, the shipper has no protection in case of a problem. Also, shippers typically ask for a copy of the broker's insurance certificate and any specific insurance that applies to the shipment. Overall, shipping costs have fallen over the past decades. A further drop in shipping costs in the future might be realized through the application of improved 3D printing technologies.   Governments are very concerned with cargo shipment, as it may bring security risks to

3149-410: The law of subrogation (who subsequently sold their rights), but that the property aboard the wreck still belonged to its original owners or their heirs. Military wrecks, however, remain under the jurisdiction – and hence protection – of the government that lost the ship, or that government's successor. Hence, a German U-boat from World War II still technically belongs to

3216-450: The local microbial ecology. Iron and steel wrecks are subject to corrosion, which is most rapid in shallow sea water where the salinity induces galvanic corrosion, oxygen content is high and water movement replenishes the oxygen rapidly. In deeper water and in still water the corrosion rates can be greatly reduced. Corrosion rates of iron and steel are also reduced when concretions, solid layers of rust, or layers of marine organisms separate

3283-431: The majority of business-to-business (B2B) shipments. LTL shipments are also often referred to as motor freight and the carriers involved are referred to as motor carriers . LTL shipments range from 50 to 7,000 kg (110 to 15,430 lb), being less than 2.5 to 8.5 m (8 ft 2.4 in to 27 ft 10.6 in) the majority of times. The average single piece of LTL freight is 600 kg (1,323 lb) and

3350-712: The metal from the ambient water, and encourage the development of a layer of relatively stable black oxide in the hypoxic layers. Ships that sink upright onto a sand bottom tend to settle into the sand to a similar level to that at which they would normally float at the surface. The thinner materials of the upper works tend to break up first, followed by the decks and deck beams, and the hull sides unsupported by bulkheads. The bow and stern may remain relatively intact for longer as they are usually more heavily constructed. Heavy machinery like boilers, engines, pumps, winches, propellers, propeller shafts, steering gear, anchors and other heavy fittings also last longer and can provide support to

3417-407: The only shipment on a trailer. In fact, TL shipments usually deliver on exactly the same trailer as they are picked up on. Freight is usually organized into various shipment categories before it is transported. An item's category is determined by: Shipments are typically categorized as household goods, express, parcel, and freight shipments: An LTL shipper often realizes savings by utilizing

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3484-498: The rail sidings, the rail mode of transport remains the most convenient and preferred option. Many governments are encouraging shippers to increase their use of rail rather than transport because of trains' lower environmental disbenefits. Many firms, like Parcelforce , FedEx and R+L Carriers transport all types of cargo by road. Delivering everything from letters to houses to cargo containers , these firms offer fast, sometimes same-day, delivery . A good example of road cargo

3551-406: The remaining hull, or cause it to collapse more rapidly. Vessels that come to rest upside down on a yielding seabed can be relatively stable, although the upper decks usually collapse under the load and machinery and fittings fall. Wrecks that rest on their side tend to deteriorate quickly, as the loads are not what they were designed to support, and poorly supported hull sides give way fairly soon and

3618-1074: The security of this magnitude of cargo has become highlighted on the over 6 million cargo containers that enter the United States ports each year. The latest US Government response to this threat is the CSI: Container Security Initiative . CSI is a program intended to help increase security for containerized cargo shipped to the United States from around the world. Europe is also focusing on this issue, with several EU-funded projects underway. Many ways and materials are available to stabilize and secure cargo in various modes of transport. Conventional load securing methods and materials such as steel strapping and plastic/wood blocking and bracing have been used for decades and are still widely used. Present load-securing methods offer several other options, including polyester strapping and lashing, synthetic webbings and dunnage bags, also known as airbags or inflatable bags. Practical advice on stabilization

3685-544: The ship and thus confirmed Spanish claims to the wreck being that of the Nuestra Señora de las Mercedes . They were not returned to Spain until 2013, when a court finally ordered Odyssey Marine to return the missing pieces. Archaeologist Valerios Stais discovered one of the most notable instruments of time keeping and prediction of celestial events off the coast of the Greek island Antikythera on May 17, 1902. The device, known as

3752-490: The ship's structure for decades. As corrosion takes place, sometimes helped by tides and weather, the structure collapses. Thick ferrous objects such as cannons , steam boilers or the pressure vessel of a submarine often survive well underwater in spite of corrosion. Propellers , condensers , hinges and port holes were often made from non-ferrous metals such as brass and phosphor bronze , which do not corrode easily. Shipwrecks in some freshwater lakes, such as

3819-407: The shoreline, an iceberg, etc.), bad weather, fire , and other causes can lead to accidental sinking. Intentional reasons for sinking a ship include: intending to form an artificial reef ; destruction due to warfare , piracy , mutiny or sabotage ; using the vessel for target practice ; or removing a menace to navigation. A ship can be also used as breakwater structure . Many factors determine

3886-450: The size of a standard pallet. Long freight and/or large freight are subject to extreme length and cubic capacity surcharges. Trailers used in LTL can range from 28 to 53 ft (8.53 to 16.15 m). The standard for city deliveries is usually 48 ft (14.63 m). In tight and residential environments the 28 ft (8.53 m) trailer is used the most. The shipments are usually palletized, stretch [shrink]-wrapped and packaged for

3953-402: The state of preservation of a wreck: The above - especially the stratification (silt/sand sediments piled up on the shipwrecks) and the damages caused by marine creatures - is better described as "stratification and contamination" of shipwrecks. The stratification not only creates another challenge for marine archaeology, but also a challenge to determine its primary state, i.e. the state that it

4020-409: The time of loss are: After the loss, the vessel's owners may attempt to salvage valuable parts of the ship and its cargo. This operation can cause further damage. Shipwrecks in shallow water near busy shipping lanes are often demolished or removed to reduce the danger to other vessels. On charts, some wreck symbols have a line under the symbol with a depth mark, which indicates the water depth above

4087-548: The way heavy-lift and project cargo are. Alumina , grain , gypsum , logs, and wood chips, for instance, are bulk cargoes. Bulk cargo is classified as liquid or dry . Air cargo refers to any goods shipped by air, whereas air freight refers specifically to goods transported in the cargo hold of a dedicated cargo plane. Aircraft were first used to carry mail as cargo in 1911. Eventually manufacturers started designing aircraft for other types of freight as well. There are many commercial aircraft suitable for carrying cargo such as

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4154-440: The whole or part of the ship, its cargo, or its equipment. An example was the salvage of the scuttled German High Seas Fleet at Scapa Flow in the 1920s and 1930s. The unauthorized salvage of wrecks is called wrecking . Shipwreck law determines important legal questions regarding wrecks, perhaps the most important question being the question of ownership. Legally wrecks are divided into wreccum maris (material washed ashore after

4221-467: The wreck of Cita in 1997. Historic wrecks (often but not always defined as being more than 50 years of age) are often protected from pillaging and looting through national laws protecting cultural heritage. Internationally they may be protected by a State ratifying the Unesco Convention on the Protection of the Underwater Cultural Heritage . In this case pillaging is not allowed. One such example

4288-413: The wreck. On the seabed, wrecks are slowly broken up by the forces of wave action caused by the weather and currents caused by tides . Also, more highly oxygenated water, which promotes corrosion , reduces the strength of ferrous structural materials of the ship. Deeper wrecks are likely to be protected by less exposure to water movement and by lower levels of oxygen in water. Extreme cold (such as in

4355-418: The wreckage collapses. Wrecks supported by a rocky seabed tend to collapse over and around the rocks relatively rapidly. Submarines tend to last longer as they are built much more strongly to withstand the working loads of external pressure, and may last for centuries. A shipwreck may have value in several forms: Often, attempts are made to salvage shipwrecks, particularly those recently wrecked, to recover

4422-491: Was confusion in the press and by the authorities about whether people could be prevented from helping themselves to the flotsam which was washed up on the beaches at Branscombe . Many people took advantage of the confusion and helped themselves to the cargo. This included many BMW motorbikes and empty wine casks as well as bags of disposable nappies ( diapers ). The legal position under the Merchant Shipping Act 1995

4489-406: Was in when it sank. Stratification includes several different types of sand and silt, as well as tumulus and encrustations. These "sediments" are tightly linked to the type of currents, depth, and the type of water (salinity, pH, etc.), which implies any chemical reactions that would affect potential cargo (such as wine, olive oil, spices, etc.). Besides this geological phenomenon, wrecks also face

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