ABSTRACT
Resolve enemy speed and own-speed reversed along and across the line-of-sight (see Figure A.1). The speed-along a and the speed-across x, both in knots when e and s are in knots, are:
The range-rate is:
Even if own ship is changing course, the rate of change of enemy compassbearing is:
When own course is steady:
and the rate of change of range-rate is:
