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Originally Posted by Brag
Susanna, welcome to this nest of ruffians!
I found that plotting targets manually was too time consuming for my liking. I used the running fix method in which, you take one bearing, plot your own course, take another bearing 3 minutes later or longer. Take a new bearing and advance your last bearing at the estimated speed of your target to get a fix. The system is fairly accurate.  |
thats exactly what i do and it works perfectly. i basically estimate the AOB, use the stadimeter to estimate the range, and then i calculate speed by timing how long the ship takes to get from one point to another and use a simple equation.
for example, lets say its a big fat tanker and lets just assume that its 150 meters long. position your scope on the front of the tanker and hold it there whilst timing and stop timing when the end of the ship reaches that point. lets just say it took 50 seconds. so therefore it took 50 seconds to travel 150 meters....so:
you take 150/50 and get 3. you then take 3*2 and get 6. therefore the tanker is going 6 knots.
hope that helps
btw ive noticed that not having the exact range but something close is good enough, i think the AOB and especially speed are the most important things in manual targeting.