Bananabender said..
Ultimately the yacht was in the wrong as one must give way to ferries however I wonder why the ferry sounded one blast at all and if he thought they might collide why not two to indicate turning or passing on their port side if it was clear that if the yacht stayed on course on the port tack. It looks like the ferry skipper had plenty of time to realise it would be close.
I believe the yacht altered course after the one blast and it may well have been the skippers reaction that the ferry is turning to starboard
Without knowing all the facts I would probably use that argument if the yachts skipper with my insurance coy.
If you watch it closely the yacht is already in irons only a few seconds after the blast. The ferry sounded the blast as a consequence of the yacht's manoeuvre into a tack directly in front of him.
The Manly ferries are fast and even now catch me out coming up astern, but the rivercats are stupendously fast and are on you very quickly. Even motoring around the harbour I try to keep a 360 degree lookout before any course alteration or sudden change of speed.
If the ferry had had more time he would/should have sounded five short blasts, a "wtf are you doing" sound signal. In this case I doubt he had time to give 5 short blasts and if he had the yacht could have been confused by 1 short blast, altering stbd, 2 short blasts, altering port, or 3 I am going astern. By the time the 5th blast came it would be too late.
In this case the ferry skipper will be cleared because he had formal right to stand on, the yacht tacked directly in front of him and then failed to complete the tack. The ferry went astern when he realised a collision was imminent. Maintaining speed and altering to stbd could well have resulted in a fatal collision, better to hit at slow speed.
If the ferries were to try and get out of the way of each yacht passing in front of them they wouldn't get to Manly. Realistically, in these situations they can only react after the other vessel has created a collision situation.
I suspect the skipper will be counselled to be more careful i future. 10 slaps over the wrist with a soggy noodle.