| http://www.w3.org/ns/prov#value | - The switch 70 may be of the simple ???on/off??? variety, or may include proportional control circuitry to allow varying of the speed of the thruster motor as well as for a reverse function as may be appropriate.Because the STD has significant military uses, it is advantageous that it be of a construction which permits it to be easily deployed from military vessels, such as submarines.
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