sound signals?

[PeterBoater]

I am turning right round to starboard/port

 

[mlines]

That's not in colregs. Is it a river byelaw?

 

[Ramage]

They are in the Port of London Authority regulations:

SOUND SIGNALS on the THAMES



Short I am altering my course to STARBOARD



SS I am altering my course to PORT



SSS I am operating ASTERN propulsion



SSSS S I am turning fully round to STARBOARD



SSSS SS I am turning fully round to PORT



SSSSS I do not understand your intentions; keep clear

(I doubt whether you are taking sufficient action to avoid a collision)



Long I am about to get underway / enter the fairway

or: I am approaching a blind bend



L SS I am unable to manoeuvre (not under command)



LL S I intend to overtake you on your STARBOARD side



LL SS I intend to overtake you on your PORT side



LS LS I agree to be overtaken

 

[mlines]

Thanks, that's useful

Perhaps it should be taken to the Rowers/Boaters meeting as well

 

[DWT]

Thanks for the views. I use them sparingly, usually limited to turning to port or starboard when exiting or entering the Marian cut and occasionally if I am turning around when there are other boats nearby. It is easy to forget the rest through lack of use and I am sure the one about overtaking is likely to be misinterpreted.

 

[Rascal Joe]

Sound signals for the Thames are included in the latest version of the free app, River Thames Guide, available in the App Store:
https://itunes.apple.com/gb/app/river-thames-guide/id617269104?mt=8