[Etienne]

The video doesn't give enough information to approportionate blame. If we assume the final situation is simillar to the original, then yes, the boat the camera is on is to blame... But then, the other boat didn't get out of the way either. (The rules clearly state that it is your responsabillity to avoid collision by any means necessary, no matter what.)

If it begun as a head-on situation with a small CPA to starboard, then there's a whole mess of arguments you can get into. It's a lot more complex than "Go to starboard" (If could be argued that since there was a CPA greater than 0, a vessel could consider itself not to be in a collision situation, and simply increasing the passing distance by going to port. If the other guy goes to starboard, considering himself to be in a head on situation, then boom.)

Size of vessel has no bearing on the rules, except where a vessel of less than 20m (IE, pleasure craft) is involved with a large vessel that can only navigate safely within the constrain of a channel, or a vessel is constrained by her draft (And that's kind of a shaky status anyway). In theory, on the open sea, a ULCC should stay out of the way of a 30 ft sailboat. Don't try it in a river.

In this case, both the vessels at cause are big enough that they should have been manned by professional mariners - the kind of people who HAVE read the regulation. Heck, a navigation degree involes something like over 120 hours of collision avoidance training. There was a time I could cite the rules word for word.

There's probably blame to be had on both sides. Rules 2, 5, 6 as usual. But from a thirty second video, you can't really go "OMG STUPID BOAT!"

Edited to add that I entirely agree with Captain Vlad's post below.