One long blast can mean one of many things:
1) I am turning to starboard
2) In a situation of restricted view (ie turning a blind corner on a river) it's a warning signal to warn other vessels of your presence
3) In fog it is a general fog signal for vessels over usually over 12meters underway (this is repeated every 2 minutes)
On seagoing vessels in restricted visibility a prolonged blast on the ships whistle means the vessel is making way through the water.
Be careful, know where you are going, warn other ships of your presence (one long blast of a horn or similar)
it means to blow a horn ok bye thanks for reading
A. Three long blast of the ships whistle or general alarm at an interval of three, means a man overboard. This is dismissed by three short whistle blast. B. Three Short blast can also be Rule 34 (Inland and International) "Maneuvering and Warning Signals." Three short blast means "I am operating astern propulsion."
Get The Bleep Out Of The Way.
This one long blast serves as a warning to other craft that there is an unseen vessel in the area. Be on alert!
It is the signal for abandon ship. Addition to answer. A B A N D O N ...................SHIP! 1 2 3 4 5 6 7 Short........... 1 Long
There are particular sound signals that are to be used when you first get underway. One prolonged blast signifies that you are about to get underway. If you are going to make way in reverse, you need to signal an additional 3 short blasts.
It is called a short salute and is how ships greet each other.
The Long Ships was created in 1945.
The Long Ships has 603 pages.
A killer whale does not have a horn.