Angle Of Bow.......Quick Question

[Snowman999]

Not quite. AOB (Angle on the Bow) has to include Port or Starboard--the target's port or starboard side as seen by the sub. AOB can therefore never be numerically greater than 180 degrees. In your example it would be possible for the submarine to be bearing 270 relative, and thus give an AOB of 270 (without port or starboard, which renders it incorrect too.) An AOB of 270 isn't possible.

AOB is taught in USN Sub School (the real one, not the one in the game <g>) using vectors. The Line-of-Sight (LOS) is an imaginary line extending from the center of the observer's vessel (sub) through the center of the target. The vector is the target's course (AOB results) and speed (length of vector.) If the target's bow is to the right of the LOS it's a starboard AOB; left it's a port. Broadside is a 90 AOB, either port or starboard, etc. The AOB is the angle between the LOS and the TARGET'S bow.