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There were no allied vessels in the harbour so the indicator loops on the minefields were activated. Two hours later, at 23:32, current was detected in an indicator loop laid in a remotely controlled minefield, induced by the submarine as it passed over the cable. Activation of the loop detonated mines in the field, sinking the submarine. [10]
The remaining built elements of the Royal Australian Navy (RAN) Station 9, a World War II-era indicator loop and photo-electric (PE) beam monitoring complex, are located in Myrtletown Reserve, at the end of Gannon Road near Pinkenba. The concrete control and generator hut still stand at the southeast corner of the reserve, along with a number ...
[b] The Royal Navy had continued to develop indicator loops between the wars but this was a passive form of harbour defense that depended on detecting the magnetic field of submarines by the use of long lengths of cable lain on the floor of the harbour. Indicator loop technology was quickly developed further and deployed by the US Navy in 1942.
This is a list of known World War II era codenames for military operations and missions commonly associated with World War II. As of 2022 [update] this is not a comprehensive list, but most major operations that Axis and Allied combatants engaged in are included, and also operations that involved neutral nation states.
In the Royal Navy controlled mines were often laid alongside anti-submarine indicator loops during both World Wars; the US Navy used a similar strategy in at least World War II. [13] A dozen specialized vessels known as "Indicator Loop Mine Layers"—including three Linnet -class minelayers and nine smaller vessels—much like the U.S. mine ...
Some of the Boston-area forts served as POW camps during World War II, notably Fort Andrews. [36] The US Navy also participated in defending the Massachusetts Bay area with net defenses and submarine-detecting indicator loops, including stations in Nahant (Station 1D), Gloucester (Station 1E), Scituate (Station 1C), and Provincetown. [59] [60 ...
Making a display system, the "Plan Position Indicator" (PPI), that displayed a 360 degree pattern proved surprisingly easy, and test systems were available by late 1940. Starting in 1941 the RAF began deploying production models of the GCI radar, first with expedient solutions known as the AMES Type 8 , and then permanent stations based on the ...
In conjunction with the loop controlled minefields in operation off Fort Bribie (of which the mine control huts at this fort were a part), this naval base involved a system of indicator loops (submerged magnetic cables that would pick up the path of a vessel passing over them on or below the surface) between Skirmish Point at Bribie and ...