thats not a problem, since I started grasping it, and man, I'd like to say, that thanks to this AOB calc, I sunk 45k + GRT on my 4th patrol. It even works if the target is shifting course, or if the stadimeter and the sonar rangefinding are somewhat off (with actual sighting on a bearing and pinging on that bearing when the midsection touches the crosshairs). A real deal I would say. Thanks man!
By the way, I found a real cool solution to target speed.
You measure his distance on first contact, plot a line from that point down an estimated course (be that parallel to previous points) , and pick two bearings to be the start and finish for timing. When his bow touches the crosshair on the first bearing, start the clock, and measure distance by stadimeter.
When his bow touches the crosshair on the other selected bearing, stop the clock and take a range reading also through the stadimeter. This is as accurate as it can be and allows you to also plot his true course (based on stadi readings). Connect a line from selected bearing A to seected bearing B, measure distance on map and course from tool helper. Divided distance by time taken to bow cross.It could be done with the sonar but two pings are enough to get you spotted. For sonar, clear the conning tower of all personnel, rotate the hydrophone knob to selected bearings and ping when midsection is centered on your crosshair at both cases. The range maybe off but a course is established with the aob calc. Happy hunting Capn.
