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The Cheonghaejin class has a towing winch and carries two landing craft vehicle personnel on davits for use as work boats. [2] The ship has hull-mounted sonar and a landing platform for a light helicopter. The vessel is armed with six 12.7-millimetre (0.50 in) machine guns. [1]
A prescription mask, or glasses which can be mounted inside the mask or helmet to provide clear vision underwater, enhancing the experience and safety for those with vision problems. A prescription mask contains lenses mounted in the scuba mask frame or bonded to the original viewports. Diving helmets are often used for surface-supplied diving ...
Davit systems are most often used to lower an emergency lifeboat to the embarkation level to be boarded. The lifeboat davit has falls (now made of wire, historically of manila rope) that are used to lower the lifeboat into the water. [3] Davits can also be used as man-overboard safety devices to retrieve personnel from the water.
A typical requirement for indoor facilities is that they must provide 5 metres (16 ft) clearance above the highest diving board or platform, so that divers do not hit a ceiling structure. [ 1 ] The competitive sport of diving has included the 10-meter dive as an Olympic event since the 1904 Summer Olympics .
In platform diving, the diver jumps from a high stationary surface. The height of the platforms – 10 metres (33 ft), 7.5 metres (25 ft) and 5 metres (16 ft) – gives the diver enough time to perform the acrobatic movements of a particular dive. There are additional platforms set at 3 metres (9.8 ft) and 1 metre (3.3 ft).
The speed that a diver is travelling at the water surface when they dive from a ten-metre platform is around 35 mph [29] and when a diver hits the water flat from 10 metres they are brought to rest in about 1 ft.
The platform may be fixed, folding, or arranged to lower divers into the water and lift them out again, in which case it is known as a diver lift. [122] Most dive platforms are mounted at the stern, usually on the transom, at a height a short distance above the waterline. They are easily flooded by a following sea, and are self-draining.
In June 2021, the Marine Corps selected the UVision Hero-120 loitering munition to be integrated onto the LAV-M, as well as other platforms, under the Organic Precision Fire Mounted (OPF-M) effort to enable them to employ a mid-range, anti-armor weapon system. [31] The multi-canister launcher (MCL) mounted on the LAV-M can hold eight munitions ...
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