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The Norfolk Broads Forum / Boats / help with boat details
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Posted By Discussion Topic: help with boat details

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sadie
May-17-2017 @ 11:17 AM                           Permalink
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   now lucky me has got a boat need to find out bridge clearance boat is a horizon 35 first called brinks triton. no one at brinks can help is there a site i can go to for more details,

          John & Di

Paladine
May-17-2017 @ 11:41 AM                           Permalink
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Welcome to the Empty Wallet Club  Smile

This advertisement shows the air draft as 6'8", but that is not the same as bridge clearance. You will have to test it at the bridges you might want to transit. Although the Horizon 35 was designed to go under all of the Broads bridges, much depends on the shape of the bridge, the state of the tide, and any modifications that may have been made to your boat.

The pilot at Potter Heigham should be able to tell you what clearance you need there, and I would recommend using their services, rather than try taking it through yourself.

At Wroxham Bridge (which is also arched) there is a handy guide dangling down just before the bridge. You can feed your boat slowly through that, and see if any part touches. My Bounty 30 has a similar air draft and shape and I will get through when the gauge reads 6'6", but I have to be plumb-centre, or the hand rails will hit.

The other bridges are near enough straight across and you should be able to use your maximum air draft (6'8"?) as a guide, having read the height gauge at the bridge. The only other tight bridges you need to be extra careful with are the Old Road Bridge at Beccles and the two railway bridges at Thorpe St Andrew.






"..for the avoidance of any doubt, the broads are not legally a national park and do not come under the national park legislation, and nor will they."
Parliamentary Under-Secretary of State for DEFRA (Hansard 2015)

Captain-Joshie
May-17-2017 @ 1:20 PM                           Permalink
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Hi

You could also try actually measuring the clearance as I did on our Broom Skipper hard top.

Just get a straight length or timber, tie a length of cord/string and wind some of it round at one end with a weight on it, I used a large nut, and place the timber level across the highest point out across over the boat and unwind the nut so it just touches the water. Then measure the string and that's your clearance needed, I add an extra inch to be sure Playful Wink .

John.

Kind regards, John(Captain
Joshie), Jo & Toby.
'Braveheart' L68 Broom
30/Skipper

Steve51
May-17-2017 @ 1:44 PM                           Permalink
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Back in 2012 I posted,

"f the boat is the one in your avatar, I'd be surprised if your air draft was that high. Easy way to check. Moor your boat side on, get a length of batten (eg. 2x1) and fix a spirit level to it. Stand on the quay and place the batten on the highest part of the boat, when it's level measure down to the water and this will give your actual air draft. Allowance will need to be made for arched bridges. Hope this helps."



Steve. CM1 and NR12

This message was edited by Steve51 on May-17-17 @ 1:45 PM

sadie
May-17-2017 @ 2:58 PM                           Permalink
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will try that be a nut holding a nut??
    John & Di

expilot
May-17-2017 @ 4:43 PM                           Permalink
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Hi Sadie, from the description you have provided, she may first have been called Triton.  By that name she would have been hired from Martham Ferry boatyard.  As such, she would  originally have carried extra ballast in the bows to get the boat as low as possible for Potter Heigham Bridge.  From a failing memory, I would suggest that she passes Potter Bridge (with a pilot) at 6' 7", but she can be persuaded through at less with people sitting in the bow well.  At any flat bridge, you will need less clearance, of course.

"There are old pilots.  There
are bold pilots............."

avg45
May-17-2017 @ 6:52 PM                           Permalink
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Hi John & Di if your boat is the one we discussed some time ago (Sunrise) any thing below 6-9" at Wroxham will get you through with no problem.  Ar Potter its best to ask the pilot. Happy cruising.     Cheers


I read somewhere that
drinking was
bad for you, so I have
given up Reading.
Alan


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