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emergency tow vessel
An emergency tow vessel, also called emergency towing vessel, (ETV) is a multi purpose boat used by state authorities to tow disabled vessels on high seas in order to prevent dangers to man and environment. The disabled vessel is either towed to a safe haven or kept in place against wind and current until commercial assistance by tug boats has arrived on site or until it has been repaired to the extent of being able to manoeuvre on its own. The need for ETVs as a preventive measure has arisen since the number of available commercial salvage tugs was reduced while potential dangers from individual vessels have increased. E.g. Spain has fourteen, Turkey has eleven, Germany operates eight, Norway has seven, France has five, Sweden three and the Netherlands, Poland, South Africa, Iceland and Finland each have one official emergency tug boat. Australia also operates emergency response vessels. The United Kingdom's four strong ETV fleet was to be disbanded in September 2011 due to budget cuts but the two vessels operating in Scottish waters received an extension of contract until the end of 2011.
==External requirements==
Distressed vessels that request the service of towing vessels have means to make towing as safe as possible. Oil tankers have emergency towing equipment fixed at the forward and aft part of the vessel that will allow to connect the towing line. The connection of these apparatuses to the vessel's hull is reinforced according with class requirements. Bulk carriers and general cargo vessels are not required to have a specialized emergency towing arrangement. Depending on the vessel's type and keel laid date, in accordance with the MSC256(84) standard they must have on board an emergency towing procedure manual. This ship-specific manual describes procedures that will allow the vessel to be towed using its own equipment. The procedure should make use of the standard mooring equipment like mooring ropes, bits, rollers and Panama chock.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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