jimg
Well-Known Member
This photo has been posted on Scuttlebutt as an example of speeding, how fast do you think he is going?
How fast is this?
- Thread starter jimg
- Start date
BrendanS
Well-Known Member
5.9999 knts
tcm
...
nowhere near 10 knots, imho. 6-8 perhaps?
mainshiptom
Well-Known Member
Shame !
mjf
Well-Known Member
7 knots
KevB
Well-Known Member
Less the 10 knots. Any fatser and the stern would be digging in a lot as the hump builds under the bow. Of course he could be on the plane but then the wash would be bigger. So 6-8 knots at a guess.
MedDreamer
Well-Known Member
Probably more than 6 knots which is the limit at Ferry Nab, but if that is to be enforced then the powers that be should more carefully monitor the Lake Tour boats who generally seem to ignore that particular bye-law more than any other lake user.
So my guess would be between 6-10 knot, the boat looks a bit squat down at the back and also the wash is, IMHO, more displacement than power.
This picture really highlights a point made by many powerboaters about the speed limit, namely that the wash at 10 knots can be more turbulent and a problem than when the boat is at planing speed.
So my guess would be between 6-10 knot, the boat looks a bit squat down at the back and also the wash is, IMHO, more displacement than power.
This picture really highlights a point made by many powerboaters about the speed limit, namely that the wash at 10 knots can be more turbulent and a problem than when the boat is at planing speed.
ValleyForge
Well-Known Member
This area has a limit of 6, past the ferry its 10.
I reckon said craft doing 6 near as dammit (especially as the wardens jetty is just behind on the far shore ...)
Am now totally confused as to whether curent speed limits are mph or knots.
I reckon said craft doing 6 near as dammit (especially as the wardens jetty is just behind on the far shore ...)
Am now totally confused as to whether curent speed limits are mph or knots.
MedDreamer
Well-Known Member
You are right the speed limit is mph
totopalm
Well-Known Member
Impossible to say from a still pic, but in 60secs time i will recheck the pic see how much nearer he is to the stop
sign, that way i can calc distance travelled, and nick 'im
I bet you all saying why did'nt i think of that??
maybe not! cheers Tony
sign, that way i can calc distance travelled, and nick 'im
I bet you all saying why did'nt i think of that??
maybe not! cheers Tony
Andrew_Fanner
Well-Known Member
Curious.
Its a wet bit.
Why is the speed limit in mph? Boats with a need to check their speed will probably by default display in knots.
Further curious, why not kmh as on the Thames?
Its a wet bit.
Why is the speed limit in mph? Boats with a need to check their speed will probably by default display in knots.
Further curious, why not kmh as on the Thames?
DAKA
Well-Known Member
The bow wave is produced from hitting the wash from the boat to the left of the pic.
The huge stern wave is formed from starting ( the boat has been at near stand still waiting for the boat to pass) Evidenced by 40% of the white wake actually being turbulence under the surface.
Scale speeds play a very important roll, we need to know how long the boat is.
As it has a radar arch we assume it is 34-40 ft, a 23ft boat would give the appearance of a speed 30-40 % greater.
I therefore suggest the boat has only just set off from a near stand still
He has pushed the throttles fairly hard down and created a lot of turbulence under the water.
A stern wave has only just started to form and I expect a photograph taken 20 m further on will show the boat at 5 knts/ 5.75 mph assuming no further acceleration.
The boat is near level, it is the blue 'go faster stripe' that sinks to the rear.
I would further deduce from the subsurface turbulence that this is a single engined outdrive vessel which will be heavily weighted to the stern so even at stand still the bow will appear raised.
The huge stern wave is formed from starting ( the boat has been at near stand still waiting for the boat to pass) Evidenced by 40% of the white wake actually being turbulence under the surface.
Scale speeds play a very important roll, we need to know how long the boat is.
As it has a radar arch we assume it is 34-40 ft, a 23ft boat would give the appearance of a speed 30-40 % greater.
I therefore suggest the boat has only just set off from a near stand still
He has pushed the throttles fairly hard down and created a lot of turbulence under the water.
A stern wave has only just started to form and I expect a photograph taken 20 m further on will show the boat at 5 knts/ 5.75 mph assuming no further acceleration.
The boat is near level, it is the blue 'go faster stripe' that sinks to the rear.
I would further deduce from the subsurface turbulence that this is a single engined outdrive vessel which will be heavily weighted to the stern so even at stand still the bow will appear raised.
Phoenix of Hamble
Well-Known Member
Gosh... its Sherlock Daka Holmes!!!!!!!
DAKA
Well-Known Member
Not really I just used the same old cr** I use each time I get pulled over /forums/images/graemlins/blush.gif
Works every time /forums/images/graemlins/grin.gif
Works every time /forums/images/graemlins/grin.gif
itsonlymoney
Well-Known Member
Thats a Bayliner 285 prob one of many from our marina.
I would say he's doin about 5-6mph. Even a little more than that and the boats trying to get on the plane.
I would say he's doin about 5-6mph. Even a little more than that and the boats trying to get on the plane.
RogerRat
Well-Known Member
Nope, it's not a Bayliner, they have swept back radar arch like the Targa, ask Jez, he has one under offer! /forums/images/graemlins/cool.gif I'm guessing BMB29 or poss 32 @ 8 knots.
MedDreamer
Well-Known Member
Not a 285 Ian, it looks like a Bavaria (BMB) to me, there is one on our pontoon with the same colour scheme and forward facing radar arch
RogerRat
Well-Known Member
/forums/images/graemlins/grin.gif
Lakesailor
Well-Known Member
6 Knots is the limit in the Bay
Ah ha!. I posted the pic. It was taken from the real-time cam at Ferry House. The reason I thought it was more the 6 knots was that he looked to be going noticeably quicker than the dutch-style ferries which as has already been said, seem to exceed the limit. It would be interesting to take a trip with a handheld GPS. It would seem a bit silly opposite the wardens office.
It depends of course on how far out he is. Being closer in he would appear to cross the frame more quickly. I froze this from the cam and he did seem to be going quicker than anything else I'd seen.
The new speed limit signs have sprung up all over the lake and are all in knots now.
This is blown up from a telephoto shot, but I've been out to look at the small yellow markers and they definitely say "6 Knots"
Ah ha!. I posted the pic. It was taken from the real-time cam at Ferry House. The reason I thought it was more the 6 knots was that he looked to be going noticeably quicker than the dutch-style ferries which as has already been said, seem to exceed the limit. It would be interesting to take a trip with a handheld GPS. It would seem a bit silly opposite the wardens office.
It depends of course on how far out he is. Being closer in he would appear to cross the frame more quickly. I froze this from the cam and he did seem to be going quicker than anything else I'd seen.
The new speed limit signs have sprung up all over the lake and are all in knots now.
This is blown up from a telephoto shot, but I've been out to look at the small yellow markers and they definitely say "6 Knots"
ValleyForge
Well-Known Member
Thats the conundrum - the old limits are indeed 6Kn, but the new codge up is 10 MPH - or so the regs say, dreamt up as they are by non boaty people.
