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JP 3-50 National Search and Rescue Manual Vol I - US Navy

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through the tail of the ship's vector (plot center).<br />

Extend this line out to L/2 on both sides of the ship.<br />

(c) Erase all construction lines.<br />

b. Algebraic solution. Magnitude of X <strong>and</strong> Y depend on<br />

aircraft groundspeed (GS) for a given leg <strong>and</strong> ship speed. Y<br />

is never greater than X.<br />

LVs<br />

(1) X = ------- (V1 is GS on the leg with the<br />

2V1 headwind component)<br />

LVs<br />

(2) Y = ------- (V2 is GS on the leg with the<br />

2V2 headwind component)<br />

(3) Construct:<br />

(a) Ship course from plot center.<br />

(b) Line perpendicular to ship course through plot<br />

center.<br />

(c) Line parallel to ship course on upwind side a<br />

distance L/2 from plot center.<br />

E-7

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