View Single Post
Old 06-30-11, 04:34 AM   #3
Snestorm
Stowaway
 
Posts: n/a
Downloads:
Uploads:
Default

No charts needed.

A. Point periscope at bow, and note Gyro Angle.
B. Point periscope at stern, and note Gyro Angle.
C. Subtract. A - B = Spread.

Very simple. Enjoy.
  Reply With Quote