Precision Anchoring, Continued
Lay out and label the approach track (minimum of 1,000 yd) and label as
shown in figure 12-9.
Lay out and label the intended track that will intercept the approach track.
Lay out and label the turn bearing for the turn onto the approach track. In
figure 12-9, a turn bearing of 345° on the tank is used.
Lay out the letting-go circle; remember that the radius of this circle is equal to
the distance from the pelorous to the hawsepipe.
Lay out and label the letting-go bearing (LGB). In figure 12-9, a LGB of 096°
is constructed using the stack.
Lay out range to anchorage distance arcs beginning at the edge of the letting-go
circle. Use 100-yard increments out to 1,000 yards and then also at 1,200,
1,500, and 2,000 yards, as shown in figure 12-9.
Figure 12-9. The completed anchorage track.