�y��vlog

At this meeting two pocket compasses, one brought by Mr. Furness and the other by Mr. Sellers, were placed at a point near the circle of the hands in order to observe whether any deflection from the magnetic course occurred.

Worsley reckoned from the chart that the distance from our camp to Husvik, on an east magnetic course, was seventeen geographical miles, but we could not expect to follow a direct line.

I read: "The Correct Magnetic Course is derived from the True Course by applying to it the variation."

So I added 9 degrees 40 minutes to the left of my west-by-south course, thus getting my correct Magnetic Course, and was ready once more to run to open sea.

This purely local variation I derived from the deviation card of my standard compass and then applied to the Correct Magnetic Course.