Guest Posted May 10, 2016 Share Posted May 10, 2016 I'm always intrigued whenever anyone complains about arched bridges not having "accurate" clearance heights. As has been said, how wide is the rectangular topped boat going through the semi-circle ? It has to be a compromise for "average" width boats. I did Wroxham too, though it was a few years ago now, so the gauges may have changed..... Quote Link to comment Share on other sites More sharing options...
BuffaloBill Posted May 11, 2016 Share Posted May 11, 2016 Strowy's bridge info is spot on in my opinion. Iv'e used this for my last boat and again for this one, a Sheerline 950 AC, and found it to be pretty accurate. Here is the drawing I made on his info drawn on a scaled print-out. Iv'e yet to go under but will do soon..... I might add that it took 2 of us to measure our boat and about an hour of work to come up with the final details shown here. The gauge was showing 7' 6" I believe at the time of the photo. Quote Link to comment Share on other sites More sharing options...
Mark Posted May 11, 2016 Share Posted May 11, 2016 Bill what is the airdraft of your Sheerline pls ? Quote Link to comment Share on other sites More sharing options...
BuffaloBill Posted May 11, 2016 Share Posted May 11, 2016 Mark, it's 6' 10" exactly with everything down. The arch hinge point being the highest point on the boat. Went under Wayford Bridge at the weekend with the gauge showing 7' and had about 2" to spare, so that gauge is pretty near correct too. Do you have one? 3 Quote Link to comment Share on other sites More sharing options...
riyadhcrew Posted May 11, 2016 Share Posted May 11, 2016 Nice looking boat Bill. Quote Link to comment Share on other sites More sharing options...
Mark Posted May 11, 2016 Share Posted May 11, 2016 Not at the moment Bill, but its an ambition that I hope to realise in around four years or so. As Eric says its a lovely looking Boat you have there. Interesting what you said about Wayford. When we took Thunder through last Oct the gauge stated 7ft and we were 6'10'' before allowing for the nav lights which are 2'' and they only just made it under, so can vouch for the accuracy on that one. Quote Link to comment Share on other sites More sharing options...
addicted Posted May 12, 2016 Share Posted May 12, 2016 We used to have a Sheerline 950AC and it's so easy to remove the canopy etc quickly if you need to. We now have a Sheerline 1050 aft cabin and that takes a bit longer.. The first season we had her( 2011) we were returning from Oulton Broad one Sunday with guests on board who needed to get back for work the next day. When we got to Somerleyton we were told by the bridge operator that he wouldn't open it because it was too hot! We'd always intended to take down the canopy etc. just to see how easy it was( or not) as a practice run for when it became necessary but of course had never got round to actually doing it. The gauge said we'd got 2" more than we needed with everything down including screens. So we formed a chain and took it all down piece by piece, fortunately our guests were boat owners and knew what to do to help, we got it down in 5 minutes and went under sitting on the floor of the cockpit. Apparently, according to our guests, who were in a better position to see than us to see, The radar arch hinge went under with about half a inch to spare. When we got out the other side of the bridge there was a hire boat full of what appeared to be Eastenders as one of them called out "cor blimey mate, you still got your 'air?". Still at least we made it in one piece. We love our Sheerline even though the height makes her a little less flexible on where we can go than the 950 was. Regards, Carole 1 Quote Link to comment Share on other sites More sharing options...
LondonRascal Posted May 12, 2016 Share Posted May 12, 2016 This was me taking Broad Ambition through Wroxham, with 6' 6" bang on the gauge. I rather like the video as now I can always refer to this and think 'I did it then I can do it again'. 6 Quote Link to comment Share on other sites More sharing options...
Hockham Admiral Posted May 12, 2016 Share Posted May 12, 2016 Lucky you! Quote Link to comment Share on other sites More sharing options...
Bob48 Posted May 13, 2016 Share Posted May 13, 2016 we are taking a 44 ft x 11 foot boat out in October according to calculations made with the info i have been able to get from this forum i shouuld be able to get her through Wroxham , obviously because she is a hire vessel the pilot will have that responsibility and indeed the final say, the issue i have is not necessarily going Wroxham to Coltishall more the other way , as i'm led to believe if it is miserable weather it can alter the depth of water under the bridge, so the question i am asking myself is " do i go through and not get back or do i not go through and then kick myself for not going when i could have got back ". October is a long way off but the end of May approaches and we'll be there for a week . Quote Link to comment Share on other sites More sharing options...
BroadScot Posted May 13, 2016 Share Posted May 13, 2016 The pilot will guide you I am sure, if it comes to that scenario Bob. Its amazing what a dozen extra bodies on board can do to boat heights! Iain 1 Quote Link to comment Share on other sites More sharing options...
neilp1962 Posted May 23, 2016 Share Posted May 23, 2016 I could do with some advice from you experienced Wroxham Bridgers, to do with what sort of time I can plan (without guarantee) to get through and up to Coltishall. I absolutely will of course take the advice of the pilot on the day, but just for the sake of planning the situation will be: Hireboat is AF Pearl 38 Grande Girl 1 from Summercraft, booked Saturday 28th May to Saturday 4th June. I believe airdraft of this boat is 6'10" I want to get upstream on the evening of Thursday 2nd June, and return early next morning Friday 3rd, but low water on these days isn't quite right for my travel plans. On the Thursday heading towards Coltishall low water is predicted to be 17:52 and I could do with getting under a little before that, say 16:30 because 1) I don't want to be too late to get a mooring and 2) I think the pilot will have gone home by 17:52. If the common is full I need to get back to Wroxham for a mooring, so early is good. In everyone's opinion, and given that it takes (on a falling tide) maybe 7 or so hours to fall from high water to low water, is this do-able? It would be 6 or so hours after high water and an hour and a half or so before low water on an ebbing tide. The bigger question is next morning, low water is predicted for 06:25 but that's far too early to get the 90 minutes from Coltishall, so I could do with getting through at about 9:00 (earlier if there is a pilot) which is 2.5 hours after low water, and about 3 hours before High water on a rising tide. Half way between low and high water, squeeky bum time maybe? The bridge is listed as 7'3" at low water, with a potential rise of 6" to high water level taking it to maybe 6'9", but with the bridge arch and the width of the boat to consider I'm looking for the voices of experience here. Some of you will have the same or similar boats and will maybe have considered a similar scenario, any opinions? Do you have to be very close to LW or is there a rule of thumb tolerance? I suppose what I'm considering is that if the height can range from 6'9" to 7'3" is there 7'0" clearance half way between LW and HW and would the boat with it's width get through a bridge that's arched? Next I'll try nuclear physics, it's probably simpler. Also, Summercraft offer a free passage through the bridge, I'll ask them myself obviously but it's evening now so does anyone know if they take you through themselves or do they just pay NBD? If it's them doing it there's a better chance of getting the times I want as the queue will probably be shorter. Thanks in advance for giving up your knowledge freely, it's invaluable and I'm hoping to be as useful myself one day. Quote Link to comment Share on other sites More sharing options...
BroadScot Posted May 23, 2016 Share Posted May 23, 2016 Hi Neil, Unless the weather takes a turn for the worse, and the tide is higher than normal, to use a pun, you should sail through Wroxham Bridge with the pilot. If there is any doubt, they would not let you go in the first place. Great yard you are with, and a well turned out boat for sure. Have a great holiday, with pics and tale afterwards, please! Iain Quote Link to comment Share on other sites More sharing options...
Matt Posted May 24, 2016 Share Posted May 24, 2016 13 hours ago, neilp1962 said: I could do with some advice from you experienced Wroxham Bridgers, to do with what sort of time I can plan (without guarantee) to get through and up to Coltishall. I absolutely will of course take the advice of the pilot on the day, but just for the sake of planning the situation will be: Hireboat is AF Pearl 38 Grande Girl 1 from Summercraft, booked Saturday 28th May to Saturday 4th June. I believe airdraft of this boat is 6'10" I want to get upstream on the evening of Thursday 2nd June, and return early next morning Friday 3rd, but low water on these days isn't quite right for my travel plans. On the Thursday heading towards Coltishall low water is predicted to be 17:52 and I could do with getting under a little before that, say 16:30 because 1) I don't want to be too late to get a mooring and 2) I think the pilot will have gone home by 17:52. If the common is full I need to get back to Wroxham for a mooring, so early is good. In everyone's opinion, and given that it takes (on a falling tide) maybe 7 or so hours to fall from high water to low water, is this do-able? It would be 6 or so hours after high water and an hour and a half or so before low water on an ebbing tide. The bigger question is next morning, low water is predicted for 06:25 but that's far too early to get the 90 minutes from Coltishall, so I could do with getting through at about 9:00 (earlier if there is a pilot) which is 2.5 hours after low water, and about 3 hours before High water on a rising tide. Half way between low and high water, squeeky bum time maybe? The bridge is listed as 7'3" at low water, with a potential rise of 6" to high water level taking it to maybe 6'9", but with the bridge arch and the width of the boat to consider I'm looking for the voices of experience here. Some of you will have the same or similar boats and will maybe have considered a similar scenario, any opinions? Do you have to be very close to LW or is there a rule of thumb tolerance? I suppose what I'm considering is that if the height can range from 6'9" to 7'3" is there 7'0" clearance half way between LW and HW and would the boat with it's width get through a bridge that's arched? Next I'll try nuclear physics, it's probably simpler. Also, Summercraft offer a free passage through the bridge, I'll ask them myself obviously but it's evening now so does anyone know if they take you through themselves or do they just pay NBD? If it's them doing it there's a better chance of getting the times I want as the queue will probably be shorter. Thanks in advance for giving up your knowledge freely, it's invaluable and I'm hoping to be as useful myself one day. If only we knew a member who used to own a Pearl 38 and moor it within sight of Wroxham Bridge......... Anyone seen BB?! We used to have a share in Evening Shadow which is a pearl 38. My minimum was 7foot and it passed with a good 2 inches all round and that was with me at the helm. Quote Link to comment Share on other sites More sharing options...
BuffaloBill Posted May 24, 2016 Share Posted May 24, 2016 Did I hear my name being called.... Yes we did have a Pearl 38 named Avalon and the airdraft was stated as 6'10" but was slightly less. The bridge 'average' airdraft for clearance is around 6'9" to just 6'6" but can change daily by quite a bit. The date you want is in Neap tides so not a lot of difference in tidal rise-and-fall then. The factor as to whether you will get through or not depends on the air pressure and the rainfall and the wind direction (takes too long to explain here now) but I took Avalon under with the guage showing 6'9" and had a fair bit of room to spare. The pilots will take them through with the guage showing 6'7" but it has to be done at speed and has to be dead centre too! I would say that you have a 'fair' chance of doing it even being an hour early if the conditions are right. As for the bridge being listed as 7'3" at low water, and that will be an average, and will be to the centre of the arch and NOT the clearance for a boat! I have seen the guage show from 6'3" up to 7'9", so as can be seen, it can vary considerably depending on conditions at the time. Hi Matt 2 Quote Link to comment Share on other sites More sharing options...
neilp1962 Posted May 24, 2016 Share Posted May 24, 2016 Thanks for the answers, Bill yours in particular and I can see how pressure (high meaning better bridge clearance?) rain (less meaning better bridge clearance?) and wind (sorry madam, it must have been something I ate). It's just to get an idea whether to spend the penultimate day of our hols heading for Wroxham with the reward of previously unvisited Coltishall, or spend that day maybe on the Ant or somewhere. All part of learning and taking advantage of others experience. Quote Link to comment Share on other sites More sharing options...
BroadScot Posted May 24, 2016 Share Posted May 24, 2016 19 minutes ago, neilp1962 said: Thanks for the answers, Bill yours in particular and I can see how pressure (high meaning better bridge clearance?) rain (less meaning better bridge clearance?) and wind (sorry madam, it must have been something I ate). It's just to get an idea whether to spend the penultimate day of our hols heading for Wroxham with the reward of previously unvisited Coltishall, or spend that day maybe on the Ant or somewhere. All part of learning and taking advantage of others experience. The River Bure up to Coltishall, has always been a favourite of ours, a fair chance you may spot the odd Kingfisher if your lucky. Iain Quote Link to comment Share on other sites More sharing options...
Sam Posted June 3, 2020 Share Posted June 3, 2020 http://www.broads-authority.gov.uk/boat ... ights.htmlThe clearance measurements for bridges given are at Average High Water during the summerBridge ..................Clearance ...Width .......Description VHF...........................metric imp metric impAcle...................... 4.00 ..12' ..23.7 ..78' .....Fixed roadBeccles Road Old* ......1.98 ..6' 6" 12.6 ..41' 6"... Fixed road*Beccles Bypass New ....3.66 ..12' ..28.9 ..95' .....Fixed roadBreydon Fixed ..........3.96 ..13' ..................Fixed spans 12Breydon Road Lifting ..3.5 ..11' 6" ................Lifting span 12Haddiscoe New Cut ....7.32 ..24' ..12.1 ..40' .....Fixed roadLowestoft Harbour ..... 2.2 ..7'1" .................Lifting road 14Ludham ..................2.6 ..8' 6" ..5.4 ..18'..... Fixed roadNorwich Carrow ........4.27 ..14' ...12.5 ..30' ....Lifting road 12Norwich Foundry .......3.05 ..10' ...16.4 ..54' ....Fixed roadNorwich Novi Sad ......4.87 ..16' ...16.5 .........Swing pedestrian 12 CarrowNorwich Trowse ........3.05.. 10' ...12.9 ..30' ....Swing rail 12Postwick Viaduct ......10.7 ..35' ...................Fixed roadPotter Heigham New ..2.31 ..7'7" ...22.4 ..73' 6" .Fixed roadPotter Heigham Old* ..1.98 ..6'6" ..................Fixed road*Oulton Broad, Lake Lothing 4.57 ..15'.............Swing railOulton Broad Mutford .2.4 ..7' 10" ..6.4 ...21' .....Lifting road 14, 73Reedham ..............3.05 ..10' ....16.6 ..54' 6" ..Swing rail 12St Olaves ..............2.44 ..8' .....23.9 ..78' 6"....Fixed roadSomerleyton ............2.6 ..8' 6" ..16.4 ...54' .....Swing rail 12Thorpe Rail (each) ....1.83 ..6' .....................Fixed railWayford ................2.13 ..7' .....6.1 ...20' ......Fixed roadWroxham Rail .........4.57 ..15' ....14.3 ..47' ......Fixed railWroxham Road*....... 2.34 ..7 '6".. 8.00 ..26'6" ....Fixed road*Yarmouth Haven .......2.9 ..9' 6" ...26.8 ..88' ......Lifting road 12Yarmouth Acle Road ...2.13 ..7'.... 21.3 ...70' .....Fixed roadYarmouth Vauxhall ....2.13 ..6' 9' ..30.4 ...100'.... Fixed footAir draught when Breydon tide gauge zeroBreydon Haven Bure / Vauxhall18' 1" 12' 9" 12' 2"Bridge PilotsAt Potter Heigham you must use the bridge pilot from Phoenix Fleet boatyard. Pilot service available 8.30am-6.00pm, depending on tide and weather conditions. Telephone 01692 670460. height gauges ... http://www.environment-agency.gov.uk/homeandleisure/floods/riverlevels/120738.aspxJust thought you might like to know that the BA link above doesn’t work.Sent from the Norfolk Broads Network mobile app Quote Link to comment Share on other sites More sharing options...
Bytheriver Posted June 3, 2020 Share Posted June 3, 2020 2 hours ago, Sam said: Just thought you might like to know that the BA link above doesn’t work. Sent from the Norfolk Broads Network mobile app This one does https://www.broads-authority.gov.uk/boating/navigating-the-broads/bridge-heights-and-opening-times 1 Quote Link to comment Share on other sites More sharing options...
expilot Posted June 3, 2020 Share Posted June 3, 2020 Despite what the BA website says, may I suggest anyone wishing to pass Potter Bridge after 5 in the afternoon may want to phone ahead to make sure that the pilot is still on duty. Quote Link to comment Share on other sites More sharing options...
WonkyDocker Posted April 8, 2023 Share Posted April 8, 2023 Hi all, (Apologies in advance if not most appropriate forum topic to ask in this page) I’ve never phoned any of the swing bridges as of yet - however looking to explore more solo and maybe not always lower the canopy. Out of curiosity - Is it frowned upon to call a swing bridge and ask for times they are planning any openings on the day of sailing? Quote Link to comment Share on other sites More sharing options...
YnysMon Posted April 8, 2023 Share Posted April 8, 2023 I don’t know, but would be interested whether that’s acceptable. Sounds like a good idea and something that might be welcomed as (presumably) it would reduce the number of times they have to open the bridge. Having said that, it’s surprising how many times we’ve approached to find Somerlayton bridge open. Not sure whether that’s just luck or them not bothering to close the bridge until the next train is due. 1 Quote Link to comment Share on other sites More sharing options...
Chelsea14Ian Posted April 8, 2023 Share Posted April 8, 2023 I've used the VHF many times requesting the bridge to be opened.Some times they will some times not.Depending if there's enough time before train is due.You can also phone and ask. 1 Quote Link to comment Share on other sites More sharing options...
WonkyDocker Posted April 9, 2023 Share Posted April 9, 2023 16 hours ago, Chelsea14Ian said: I've used the VHF many times requesting the bridge to be opened.Some times they will some times not.Depending if there's enough time before train is due.You can also phone and ask. Phone for me for now… need to look into the VHF & course side of things… keep meaning to but never have as of yet - never even paid much attention to my phone signal while out and about… don’t want to get caught short 🤣 Quote Link to comment Share on other sites More sharing options...
RS2021 Posted April 9, 2023 Share Posted April 9, 2023 Last year we stopped at Somerleyton for lunch. Nice pint in the pub and back to the boat. The sun was out and we ended up staying for a lazy afternoon. Every time I happened to look up the bridge was open. I think I only saw it closed when there was a train. I suspect once open they don't bother closing it unless a train is coming. If you think about it if it was a level crossing on a road it would be open to road traffic unless there was a train coming. Quote Link to comment Share on other sites More sharing options...
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