Passing on your starboard (right) side.
it is the same right
I intend to pass you on my starboard (right) side.
Means it's about to turn to port.
It is the "Masters Salute", a salute to the Master of another vessel.
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.
Three short blasts tell other boaters, “I am operating astern propulsion.” For some vessels, this tells other boaters, “I am backing up.”
Don't know what it means, but five short blasts from the hoRN must be a warning of some kind?
Three short blasts means you are operating in reverse. One prolonged blast followed by 3 short blasts means boat under tow in redcued visibility conditions.
They intend to pass starboard side to starboard side.
That you are crossing starboard to starboard or overtaking to port side. (you are passing on YOUR starboard side)
One long honk on the horn
Passing on your right side.Signals are (number of blasts):1. Passing you on your left (port) side2. Passing you on your right (starboard) side3. I am moving backwards (astern)4. Danger, don't do that (answer to the other three if dangerous)One short blast means 'I am changing course to starboard.'Two short blasts mean 'I am changing course to port.'Three short blasts mean 'I am operating astern.'Two prolonged blasts followed by one short blast to mean 'I intend to overtake you on your starboard side';Two prolonged blasts followed by two short blasts to mean 'I intend to over-take you on your port side.'A long blast every two minutes is used when operating in fog.