Quote:
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Originally Posted by Munchausen
Quote:
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Originally Posted by jazman
The key is 90-degree AoB.
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 Remembering that AoB is relative to the bow of your submarine. Not to the gyro (lead) angle of your fish. |
AoB is a bit of a tough one to get your head around. I struggled for a while with it, mainly due to all the examples having a ship sailing directly towards or away from you, so the AoB doesn't change. AoB is relative to the bow of your
target. If you were standing on the target ship, looking dead ahead at the bow, then however many degrees you would have to turn left or right to see your submarine is the AoB.
The reciprocal of your own bearing is the bearing from the target to you.
If you were sat stationary, pointing north and your target were directly ahead of you on a relative bearing of 000 and sailing NE, then the AoB would be 135 degrees to starboard. If the ship were due west of you and was sailing south, the relative bearing would be 270 and the AoB would be 90 degrees to port.
If you have two of the three pieces of info, target true bearing, target AobB and target course then you can work out the missing one.