Question 1850Navigation General

The correct answer is A) continue on the present course. When the upper and lower range lights are in a vertical line, it indicates that the vessel is on the correct course and aligned with the range. Continuing on the present course ensures the vessel remains on the desired track. The other options are incorrect because: B) coming right would take the vessel off the range, C) waiting until the lights are no longer in a vertical line is unnecessary since the vessel is already on the correct course, and D) coming left would also take the vessel off the range.