18. At 1042 you take the following round of bearings:

Cape Henry Light 259°T
Chesapeake Light 101°T
Cape Charles Light 006°T
From this position, you set course 070°T

What is the course per standard magnetic compass?

The correct compass course is determined by adding the net westerly correction of 9.5 to the true course of 070, resulting in 079.5psc. This accounts for both variation and deviation, following the standard True → Magnetic → Compass conversion process where westerly corrections are added.