SIMPLIFIED PLOTTING FOR ENTERING AND LEAVING PORT

Commander H. W. Dusinberre

Peer Reviewed

Abstract:	Simplified plotting, as developed during World War II, offers the navigator many advantages. The only equipment needed, in addition to the harbor chart, is a thin plastic transparent plotting envelope, some transparent scotch tape, and a thin wax pencil. A few of the advantages are: Extremely rapid plotting; Full view of the sea area by the navigator; Weather protection for the chart; Chart and plotting in full view of conning officer; Elimination of parallel rulers, drafting machine, and dividers; Determination of speed of ship at slow speeds; Freedom of selection of objects for bearings; Ready determination of bearing and distance of the anchorage; Ready determination of required course-correction when approaching the anchorage; Ready plotting of turning circles and point of rudder action; Solutions to wind vectors; Solutions to relative movement problems; and Elimination of correction for variation when plotting magnetic bearings.
Published in:	NAVIGATION: Journal of the Institute of Navigation, Volume 2, Number 9
Pages:	312 - 316
Cite this article:	Dusinberre, Commander H. W., "SIMPLIFIED PLOTTING FOR ENTERING AND LEAVING PORT", NAVIGATION: Journal of The Institute of Navigation, Vol. 2, No. 9, 1951, pp. 312-316.
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