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Rip current rescues on unguarded beaches

机译：RIP当前救援在无人防护海滩上

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Rip currents are the greatest danger at surf beaches. Professional lifeguards rescue tens of thousands of people every year at U.S. beaches, but only a small percentage of the nation's beaches are guarded. Oftentimes it is a young person who is caught in a rip current, and a bystander will attempt a rescue without a flotation device. The U.S. Lifesaving Association strongly suggests that this kind of rescue should not be undertaken because too often the rescuer will drown. Some coastal towns such as Cocoa Beach in Florida are now posting ring buoys on their unguarded beaches with the warning to throw, but not to go into the water. Ring buoys of two different weights were tested for efficiency when thrown in terms of distance and accuracy. The participants threw the ring buoys two different ways: one way of their choosing (un-instructed) and second by Red Cross recommendation (instructed). The buoyancy was also tested for each buoy. While these flotation devices have some merit, they clearly have limitations.
机译：RIP电流是冲浪海滩最大的危险。专业救生员每年在美国海滩拯救成千上万的人，但只有一小部分国家的海滩被守卫。通常，它是一个陷入撕裂电流的年轻人，旁观者将尝试没有浮选装置的救援。美国救世协会强烈建议不应开展这种救援，因为救援人员往往会淹死。佛罗里达州的可可海滩等一些沿海城镇现在正在将戒指浮标发布在他们无人看板的海滩上，警告抛出，但不能进入水中。在距离和精度抛出时，在抛出两种不同重量的戒指浮标。参与者将戒指浮标扔了两种不同的方式：他们选择的一种方式（未指示）和红十字建议（指示）。每个浮标还测试了浮力。虽然这些浮选设备有一些优点，但它们显然有局限性。

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