"Dorothy" causing excessive wash

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snapper

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A blue hulled Pedro called "Dorothy" passed close to Broomhouse Pier ( Just upstream of Wandsworth Bridge) travelling far too fast and causing significant wash throwing all the boats tied up at the pier around quite violently.
This happened on Sunday afternoon.
Please could anyone who knows the skipper ask him or her to mind their wash on this part of the river.

Thanks
 
I think and it is a think that boat lives at Eel Pie and if so is proabbly more than aware of any wash issues but I was not there so cant comment, which I just have...
 
As a displacement vessel that boat's probably not capable of doing more than 8 knots - max speed = 1.34 x square root of waterline length - doubt wll is more than 36 feet so = 8.04 knots max.

She's probably not speeding but she IS pushing water, being overdriven and probably burning up diesel to no effect - other than creating a significant wash.

Don't recall seeing it on the non-tidal and boat doesn't show on Shead's list of EA registered craft.
 
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"I'm not breaking the speed limit so it must ok" its the same mentality that assumes 5.5 knts on the river is ok because its only a little bit over and I need to maintain steerage and both my 500hp Volvos are only on tickover anyway:rolleyes:
 
Chris_d said:
"I'm not breaking the speed limit so it must ok" its the same mentality that assumes 5.5 knts on the river is ok because its only a little bit over and I need to maintain steerage and both my 500hp Volvos are only on tickover anyway:rolleyes:
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8km/hr is approx. 4.2 knots although many think that means 5mph!

During my recent trip i had an overwhelming feeling that the majority of boats were travelling too fast. One day on a couple of open stretches I set my speed at exactly 5 knots by GPS over the ground. The result was that I was either left behind or overtaken by almost every boat that had been in each lock with me - and that included at least two narrowboats!

Actually, I have to say the Hardy has been an excellent choice for the river. With a keel and twins on shafts handling is excellent and she makes almost no wash at all at river speeds.
 
Clarification please.

5 knots through the water is 5 knots upstream or down, isn't it.

If he's doing 5 knots over the ground against the stream, then he's doing over the limit.

What are the rules - is it SOG or STW ?
 
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Of all possible units of speed they could use one based on an inaccurate French guess at the diameter of the world (via Paris) is probably the least appropriate.

I'd love to know the official justification on this one, and why the Medway is different:-)

I assume its CEVNI, which is of dubious vailidity on a river with almost no commercial trafic and a lot of boats fitted up for seagoing (or at least tidal) where its all in knots anyway!

Any insights Tedders?
 
Chris_d said:
"I'm not breaking the speed limit so it must ok" its the same mentality that assumes 5.5 knts on the river is ok because its only a little bit over and I need to maintain steerage and both my 500hp Volvos are only on tickover anyway:rolleyes:
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Ahem....rampant overgeneralisation here...

In the case of Upper Thames - I assume you mean although you dont say that and i thought this was a discussion on tideway but anyways i digress.....

The law is an ass, mistyped years ago by a dopey secretary from 5knots to 5mph and over the ground such that nobody at that time could measure it. Thats not our cock up but its there and we have to deal with it.

In time of high stream, means you can do 8knots upstream and be legal, and not be able to go downstream at all without breaking the law. I call that law an ass as the stream varies daily!

I hardly think that having a go at the poor joe schmow trying to navigate his boat is fair do you?

If he is within the law and he is making too much wash, write a letter to the EA to get them to work on improving the law?

...or based on past history come back with another smug remark...
 
apollo said:
Ahem....rampant overgeneralisation here...

In the case of Upper Thames - I assume you mean although you dont say that and i thought this was a discussion on tideway but anyways i digress.....

The law is an ass, mistyped years ago by a dopey secretary from 5knots to 5mph and over the ground such that nobody at that time could measure it. Thats not our cock up but its there and we have to deal with it.

In time of high stream, means you can do 8knots upstream and be legal, and not be able to go downstream at all without breaking the law. I call that law an ass as the stream varies daily!

I hardly think that having a go at the poor joe schmow trying to navigate his boat is fair do you?

If he is within the law and he is making too much wash, write a letter to the EA to get them to work on improving the law?

...or based on past history come back with another smug remark...
Click to expand...

Have I touched raw nerve here? there is nothing wrong with the 5mph limit is there, why do we need to go faster?

Personaly I don't believe the secretary myth about 5knts/5mph, the old limit of 7knts was too fast the canals are 4mph the river slightly faster.

The boat in the picture is making too much wash, legal or not.
 
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