Your vessel is on a course of 223°T at 17 knots. At 1323 a lighthouse bears 318° relative. At 1341 the same lighthouse bears 287° relative. What is your distance off the lighthouse at 1341?

Correct Answer: Option D — 6.6 miles

Using standard relative bearing navigation tables and running fix formulas, a vessel steaming at 17 knots between 1323 and 1341 establishes a distance off the lighthouse at the second bearing of 6.6 miles.