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A 0.75 HP bore-well submersible pump which had been used to pump groundwater One style of submersible pump for industrial use. Outlet pipe and electrical cable not connected. A submersible pump (or electric submersible pump (ESP) is a device which has a hermetically sealed motor close-coupled to the pump body. The whole assembly is submerged in ...
A postwar correspondent wrote that "two blue lights" were the prearranged signals, [17] and a lookout on Housatonic reported he saw a "blue light" on the water after his ship sank. [18] "Blue light" in 1864 referred to a pyrotechnic signal [19] in long use by the U.S. Navy. [20] It has been falsely represented in published works as a blue ...
A pedestal sump pump with a float switch. A float switch is a type of level sensor, a device used to detect the level of liquid within a tank. The switch may be used to control a pump, as an indicator, an alarm, or to control other devices. One type of float switch uses a mercury switch inside a hinged float.
Link built the first submersible, Johnson Sea Link I, in 1971 at the request of his friend Seward Johnson, founder of the Harbor Branch Oceanographic Institute. It was the successor to Link's previous submersible, Deep Diver , which had been determined to be unsafe for use at great depths or in extremely cold temperatures.
The first light marking the harbor's northern point was an oil lamp placed in 1827 on a wooden tripod on Jameson Point. When the work was begun on the breakwater in 1881, the pole was relocated as the breakwater was extended SSE into the harbor. The breakwater was completed in 1899 and the present light and keepers' structure was finished in 1902.
A 10-foot (3.0 m)-deep anchorage, 5 acres (20,000 m 2) in area, located on the pond's westerly side, immediately inside the pond's entrance. A 4.5-mile (7.2 km)-long channel, six feet deep and 100 feet (30 m) wide, starting at a point 100 feet (30 m) north of the State Pier in Jerusalem and running generally along the west side of the pond ...
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