Marina Exam Reviewer: n an admiralty chart, a line joining places of equal variation is known as an Isogonic line. On special charts, lines of equal change of variation may be printed. This is known as ___.

Marina Exam Reviewer  

On an admiralty chart, a line joining places of equal variation is known as an Isogonic line. On special charts, lines of equal change of variation may be printed. This is known as ___.

A. Aclinic lines 
B. Isoclinic lines 
C. Isallogonic lines 
D. Isodynamic lines 


Answer:  C.  Isallogonic lines