Room for an obstruction

Ah I see, thank you. I was trying to find a tool in the forum.

Thank you Jim, that's exactly it. We have a lot of these obstructions, and a 45'yacht certainly does require a significant alteration of course, but I had never come across this scenario before.
Generally the port gybe boat would have realised he was getting into a difficult situation and avoided it. I think he was asleep rather than hatching a cunning plan.
Ps, how did you do the drawing?

Something like this?

Yes, starboard must give room for port to pass the obstruction, but the second they clear the obstruction port needs to get the hell out of it without clouting starboard with her boom if she gybes. I wouldn't like to be port.

Don't forget an obstruction is an obstruction, be it 5 feet or 5 miles away. The actual track of the boats is irrelevant to whether its an obstruction or not. It's just that if it's 5 miles away there aren't any problems passing it!

I'm a bit unsure of what room port is entitled to. She is entitled to enough room to comply with all her obligations under part 2 rules. That includes, presumably, room to gybe if she must gybe to keep clear of Stbd. However as soon as they are past the obstruction AFAICS port has no entitlement to room, but she has to keep clear.




Edited by JimC - 16 Jun 23 at 11:33am

Seems simple enough, if they are overlapped he's entitled to room so A has to give it.

Edited by Sam.Spoons - 15 Jun 23 at 5:41pm

Same leg of the course,both running almost parallel but converging