Tophat heights

> 10 years ago
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Sectorsteve
Sectorsteve
QLD
2195 posts
QLD, 2195 posts
11 Dec 2015 2:56pm
Does anyone know the tophat height from water to top of.mast??
nswsailor
nswsailor
NSW
1458 posts
NSW, 1458 posts
11 Dec 2015 10:24pm
See my answer on the Top Hat site Steve.
Sectorsteve
Sectorsteve
QLD
2195 posts
QLD, 2195 posts
12 Dec 2015 7:01am
Thanks alot Phil. Ive got a laser measurer so at night when im aboard i can get a really accurate reading also. Just wanna make sure i can get up to berowra under the bridges!
UncleBob
UncleBob
NSW
1311 posts
NSW, 1311 posts
12 Dec 2015 9:45am
Hi I thought that might be the idea . I know two ladies who each own tophats and they both have no problem clearing the bridges. Enjoy
Cheers, Bob.
samsturdy
samsturdy
NSW
1659 posts
NSW, 1659 posts
12 Dec 2015 11:04am

You should be OK Steve. Apparently even my 28 footer will clear the bridges.
The comment was "it looks like you can't but then you find you can".....bit scary.
Sectorsteve
Sectorsteve
QLD
2195 posts
QLD, 2195 posts
12 Dec 2015 10:49am
The rail bridge and the F3 are about 11m.
knight
knight
NSW
60 posts
NSW, 60 posts
12 Dec 2015 2:00pm
The rail bridge is 11.8 and the road bridge is 11.4 (both mean high water springs)

I know for a fact top hats can get under the the rail bridge (but it looked ummm very close the first time....) Galini is sitting at Dolphin Bay boatshed.

For the record my mast is 9.54 from deck to masthead
Sectorsteve
Sectorsteve
QLD
2195 posts
QLD, 2195 posts
12 Dec 2015 1:46pm
Geez. So thats close. Prob got about 50cm clearance in your boat?
simplicity
simplicity
NSW
23 posts
NSW, 23 posts
12 Dec 2015 4:06pm
I've gone under those bridges in the past with my Compass 28. So a Top Hat should be fine I would think.

Although I do confess I always avoided being anywhere near the top of the tide when I went under
Sectorsteve
Sectorsteve
QLD
2195 posts
QLD, 2195 posts
12 Dec 2015 5:30pm
And ill be doing the same!!!!
knight
knight
NSW
60 posts
NSW, 60 posts
12 Dec 2015 9:09pm
Sectorsteve said...
Geez. So thats close. Prob got about 50cm clearance in your boat?


I'm honestly not sure - I don't know what the waterline to deckstep height is - though yes I expect that it's fairly close (especially once you take into account the wind indicator).
However remember those height clearance are from mean high water springs and, especially during new moon periods, you won't get anywhere near those tide heights, even at high tide.

Be very aware the current running under the bridge span can be extremely quick (especially during hour 3-4 obviously).
And while yes you can wait for the turn of low tide that means you uave very little spare water under the keel going into the marina areas. Swings and roundabouts I suppose. (yes you can get in and out at LL tide but you need to keep very close to the STBD channel markers)
slammin
slammin
QLD
998 posts
QLD, 998 posts
13 Dec 2015 8:24am
Im not sure but i seem to remember there is a very low height power line crossing berowra waters just b4 the marina. I can't remember the height, I just remember it seems deceivingly low.

I know of a Sonata that was dismasted passing under the bridges. We passed underneath a couple of times and we puckered up. We are a 9.5m mast so effectively 10.5 with the boat.
knight
knight
NSW
60 posts
NSW, 60 posts
13 Dec 2015 1:27pm
It is deceptively low, but it is still much higher than the bridge (14m from memory)
Sectorsteve
Sectorsteve
QLD
2195 posts
QLD, 2195 posts
13 Dec 2015 12:32pm
On navionics it says 14m
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