Given what we know, we can confirm that while underway in fog, the sound of one prolonged blast followed by two short blasts can indicate a vessel towing.
Why is this important?
These signals can be of vital importance for the safety of the crew of both ships involved. With visibility diminished in fog, these sounds allow the ships to know the approximate position of other nearby ships. Signaling that a towing is taking place will also indicate a limited range of movement for the towing ship, making it extra important to not be on a collision course.
Therefore, we can confirm that while underway in fog, the sound of one prolonged blast followed by two short blasts can indicate a vessel towing.
To learn more about ships visit:
https://brainly.com/question/24944683?referrer=searchResults
