Your vessel is steady on a heading of 160° per standard magnetic compass when you sight Southwest Ledge Light and New Haven Outer Channel Range Rear Light in line dead astern. What is the deviation of the compass based on this observation?

At 0620 your GPS position is LAT 41°01.8'N, LONG 72°48.40'W. You are steering co...

At 0726 you depart Lake Montauk with light 1 close aboard and set course 065° pe...

At 0919 you are in Chesapeake Channel between Trestle B and Trestle C of the Che...

At 1014 you depart the entrance to Lake Montauk with light "1" close aboard. You...

At 1018 your position is LAT 41°14.4'N, LONG 72°07.2'W. At 1036 your vessels pos...

At 1113 you are in the entrance to Great Salt Pond on Block Island with buoy "5"...

At 1256 your GPS position is LAT 36°57.0'N, LONG 75°41.0'W. At 1336 your positio...

Your 1302 position is LAT 37°14.7'N, LONG 76°22.7'W. You are turning for 9.6 kno...

At 1614 your GPS position is LAT 37°01.6'N, LONG 75°31.7'W. At 1703 your positio...

At 1712 your GPS indicates a position of LAT 36°54.8'N, LONG 75°39.8'W. You are...