Two prolonged blasts of a ship's horn typically indicate that the vessel is operating in restricted visibility and is making a turn to starboard (right). This signal is part of the International Regulations for Preventing Collisions at Sea (COLREGs) and helps communicate the ship's intentions to other vessels nearby. It is essential for maintaining safety and awareness in foggy or low-visibility conditions.
Six blasts of a ship's horn does not seem to have a meaning. Five blasts will mean that you are possibly too close to another ship.
Get The Bleep Out Of The Way.
One long honk on the horn
gat out of my way
it is the same right
A warning to other boaters there is danger near by.
I intend to pass you on my starboard (right) side.
Means it's about to turn to port.
Passing on your starboard (right) side.
Sos..Need help.
Fog horn blasts are used as a warning signal in maritime navigation to alert vessels of nearby hazards, such as shorelines, buoys, or other ships, especially in low visibility conditions like fog. The sound helps mariners determine their location and avoid collisions. Different patterns of blasts can indicate specific messages or alerts, depending on maritime regulations. Overall, fog horns play a critical role in ensuring safety at sea.
Three short blasts tell other boaters, “I am operating astern propulsion.” For some vessels, this tells other boaters, “I am backing up.”