So that's yer Hamble Harbour Master with Plod there as a witness then, eh? Must be nice to live in an area with so little crime they can spare a plod for such onerous duties...
...massive spring tide, low pressure, heaps of rain...
How fast does the water flow out? In Porthmadog, under these conditions you would stand still against the outflow at 6kts. So its kinda rubbish to measure this way.
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It is speed through the water not over the ground. Same as in Portsmouth Harbour.
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Hmm interested to know how they work it for you, when they slap the ticket on, can you or Powerskipper explain it to us please as i was under the impression its SOG .WHAT IF YOUR LOG IS UNDER OR OVER READING ?? www.griffmarineservices.co.uk
Interesting. It may not be up to date but, at the moment, the Hamble website says the following:
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Speed. Bye-law 5 requires... That the master of a vessel in the River shall navigate the vessel with care and caution and in such a manner and at such a speed as shall not cause nuisance, annoyance, excessive wash, damage or injury nor danger of damage or injury to any other vessel, person or property in the River nor to the banks of the River or any person or property thereon. It is essential for safety and the preservation of the river bank to comply with this regulation. There is no identified top speed-however the Harbour Authority has applied for a new Bye-Law introducing a maximum speed of 6 knots for power driven craft throughout the River and entrance channel as far as No.1 and No.2 entrance piles close to Hamble Point Buoy - some craft would need to keep below 6 knots to comply with Bye-law 5 above.
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As the intention of the bye-law seems to be to prevent excessive wash, I'd guess speed through the water would be the logical measure, but I'm not sure it actually says so anywhere.
If it is speed through the water you will, indeed, be moving very slowly sometimes. Similarly, the speed limit on the Beaulieu River is 5 knots and, at Springs, the ebb can sometimes run at up to, erm, 5 knots. /forums/images/graemlins/crazy.gif
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there looking for six knots though the water , and have worked out a way to do it.
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Really???? They have a way of measuring the water speed where you are (and not just where THEY are), given that there is no legal requirement to a) have a log fitted (or a GPS) and b) no legal accuracy requirement of said log or GPS the absolute speed limit is probably legally unenforcable until you reach the point of "obviously" exceeding 6kts or creating loads of wash.
It'll probably rely on most people coughing up and not challenging it, I mean are they going top prosecute for 6.1kts? 6.5kts?????
Do you know if anyone has actually been 'done' yet?
Obviously this is not a great concern to me as 6 knts under power was a figure I long since saw disappear after loading all my gear on board /forums/images/graemlins/frown.gif
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If it's speed through the water, how do they allow for the current if, as in the photo, they're standing on a jetty?
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Ah but even if they did that would presumably only be the current at the jetty, not in the funnelled river mouth or whatever where the vessel actually is......surely this will be a cut-and-dried defence m'lud???? /forums/images/graemlins/smile.gif
I suspect that what they are really after is people doing significantly more than 6 knots - like 10/15 or so - and any arguments about whether it's 6 or 7 knots, or what's the speed of the tide, would be academic. I believe they use speed guns in Poole Harbour; does anyone know what happens there?
To be honest Tim, I've no idea how they work it out. I've always thought it rather strange as to how "they" effectively measure speed thru the water in a real situation. I would have thought that a speed gun would measure the apparent speed irresepective of tidal flow or other such influencers! My QHM notes say that it's speed thru the water. When on QHM patrol I have no way of knowing the speed, but a bigger issue is the effects of wash and that is clearly much more in evidence and then falls under the definition of annoyance.
So to answer your question directly - I aint got a clue! /forums/images/graemlins/confused.gif