Stay out of the way!
One prolonged blast is the whistle signal for a ship leaving a berth or in a blind bend in a channel.
You are operating a motorboat. You hear one prolonged blast from the horn of another vessel. What should you do?
You should go left
B
This one long blast serves as a warning to other craft that there is an unseen vessel in the area. Be on alert!
The sound signal that you should hear when a power boat is in the fog is one prolonged blast at intervals of no more than 2 minutes.
The sound signals that it is a sailing vessel underway when you hear one prolonged blast plus two short blasts every two minutes.
The sound signals that it is a sailing vessel underway when you hear one prolonged blast plus two short blasts every two minutes.
In reduced visibility, it means the presence of another watercraft.
One prolonged blast every two minutes
one prolonged blast
Vessel operators can alert the lock attendant of their request to transit through the lock by sounding one prolonged blast followed by one short blast
Stay to the starboard edge of the channel and signal one prolonged blast