dygogram
dygogram · dygograms
A chart showing the horizontal variation in the magnetic force acting on a ship's…A chart showing the horizontal variation in the magnetic force acting on a ship's compass needle by the iron within the ship, as a function of course steered
Meaning
1 sensesA chart showing the horizontal variation in the magnetic force acting on a ship's compass needle by the iron within the ship, as a function of course steered