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The Norfolk Broads Forum / Boats / Boat air drafts (heights)
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Posted By Discussion Topic: Boat air drafts (heights)

Similar Threads That Might Help :
Boat air drafts (heights)| Air Draft| Air Draft and Bridges| air draft | air draft |

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romany
Mar-14-2006 @ 10:01 PM                           Permalink
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just thought it may be usefull to have a thread where members could post the airdrafts of any boats they may have hired, it would help with doing a plan of a hirer's holiday route around the broads, and be informative for anyone intrested in a particular boat.


brinks omega  8ft 4ins

brink of peace 6ft 4ins

brink of joy, ultima, duchess, 6ft 6ins

I will post a few more when i get my broads diary out!

Julia, from The Hilly Side!

Japonica
Mar-14-2006 @ 10:32 PM                           Permalink
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Hi Julie
Japonica's need around 5'11 with the smaller crutches in.
cheers
Mat

Speleologist
Mar-15-2006 @ 10:49 AM                           Permalink
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And I've  known a Japonica to be a tight fit. Three years ago we had a trip when we only just got through at low tide on our way back up.

Robin
www.robin.me.uk

expilot
Mar-15-2006 @ 4:45 PM                           Permalink
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Hi Julia from the Hilly Side

The biggest problem with posting air draughts is knowing exactly what you are posting.  Believe me, if the pilots took Ultima and Duchess through Potter Bridge at six feet six inch air draught the yard would not be best pleased.  Both need 6' 9" at Potter Bridge and that allows for about an inch of safety margin - provided the boat is dead central to the bridge.  Some of the yards display air draught heights which are beyond a joke or they'll display a height for a flat span bridge.  Such heights will definitely not work at Potter.  

I remember a DIY forward drive Bounty some years ago.  The air draught height displayed in the cockpit was 6' 6".  The boat attempted to get through Potter Bridge at this height.  Save for a couple of metres which formed a hinge at the stern, the entire superstructure was lifted clear of the hull.  It moored up outside the Pilot's office looking like a crocodile with jaws agape!

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

roya
Mar-15-2006 @ 5:37 PM                           Permalink
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MR expilot,
nothing to do with air drafts but, who is the man who takes the boat that services the loos and collects the rubbish,from the bungalows and chalets,  through potter bridge,
How he gets that through is a marvel to me.
cheers.

roya

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dannyboy
Mar-15-2006 @ 6:46 PM                           Permalink
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Mr expilot is so right... air draft can be very variable commodity. Mat gives a general guide for Japonicas, but he will, I am sure, agree with me that they will vary, possibly by several inches from one boat to another.

No-one should risk a boat (or bridge) unless they are sure the clearance is more than sufficient for their boat on the given day, at a specific bridge (see comments above about flat-span bridges as opposed to the fun arches of Potter Heigham). This will always involve a little more thought than looking at a piece of plastic on the dashboard!

While it might seem nice to have a 'ready reckoner' for these sorts of things, navigating the Broads will always involve developing local knowledge, checking carefully, allowing for the very changeable circumstances etc.

Having said all that; I don't think this was what motivated Julia's idea, which does have merit as a guide for people prior to hiring, to help them think about where they are likely to be able to take the boat.

Danny

This message was edited by dannyboy on Mar-15-06 @ 5:47 PM

romany
Mar-15-2006 @ 6:48 PM                           Permalink
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I must admit, some of the airdraft information plates on the boats i have hired have often been that worn or faded that you have difficulty reading them.
the heights that i posted were the ones given to me by yard staff on handover, but still i have yet to know the new rhapsodys height simply because no one at the yard has measured it yet!

surely some form of indication needs to be published?

next week, how am i supposed to know whether i have enough clearence at bridges when all i am told is 'well shes not as tall as omega'! Question

Julia, from The Hilly Side!

dannyboy
Mar-15-2006 @ 6:54 PM                           Permalink
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It can't be that difficult to measure Julia, for the yards that is... even if it is something which changes with time. I agree, it seems to me to be a basic requirement that you know the clearance you require to navigate the boat safely.

Danny

roya
Mar-15-2006 @ 7:32 PM                           Permalink
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Hi Danny,
Well as for potter no worries,you ask the the Pilots,
i have not took Josh through yet ,and will not untill i have let a pilot take him through first,if indeed he will go through.
So the answer seems to me get the PILOTS advice every time,i think this for Wroxham bridge as well.
Most of the Brochures do state that a boat will not pass under certain bridges.



roya

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steve
Mar-15-2006 @ 7:38 PM                           Permalink
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hi all ,
speaking of wroxham bridge i've noticed over the past year or 2 that there is a notice on the new footway bridge to all herbert woods craft to use a faircraft lyons pilot or personell to take the craft through ,
cheers  

steve and vicky

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