The impact of SA removal on navigation in the Gulf of Suez and the Gulf Aqaba

Hassan El-Saadawy

Abstract:	Navigation of VLCC in the narrow lanes of the Traffic Separation Schemes (TSC) in the gulf of Suez (GOS) is dangerous. Undetected lateral slips of VLCC, or unnoticed course changes in night vision or during bad visibility (sandstorms) may lead to catastrophic situations. The removal of SA has enormously increased the horizontal accuracy of standard GPS receivers up to 7.5 meters. The purpose of this paper is to show that: after the removal of SA a VLCC equipped with a stand-alone GPS receiver connected to an antenna array consisting of three antennas can detect and monitor any unnoticed lateral slip, or course change of the ship immediately upon their occurrence. This will save the ship from running into catastrophic situations. The ship’s course vector K would also be accurately determined. Hence if the data processor would detect that (ëc, öc ) does not lay on K, this means that a lateral slip is occurring. Then, the data processor will initiate an audio and video alarm. Thus, it would be possible for the first time in the history of marine navigation to prevent lateral slips of ships by using very cheap and reliable navigational devices.
Published in:	Proceedings of the 14th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2001) September 11 - 14, 2001 Salt Palace Convention Center Salt Lake City, UT
Pages:	1631 - 1635
Cite this article:	El-Saadawy, Hassan, "The impact of SA removal on navigation in the Gulf of Suez and the Gulf Aqaba," Proceedings of the 14th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2001), Salt Lake City, UT, September 2001, pp. 1631-1635.
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