|
Home | Forums | Gallery | Webcams | Blogs | YouTube Channel | Classifieds | Calendar | Register | FAQ | Donate | Members List | Today's Posts | Search |
|
Thread Tools | Display Modes |
|
04-17-2012, 02:24 PM | #1 |
Senior Member
Join Date: Aug 2008
Location: Alton Bay
Posts: 293
Thanks: 86
Thanked 78 Times in 49 Posts
|
How do you get 80 ft of mast under a 65 ft bridge?
|
The Following 3 Users Say Thank You to AB_Monterey For This Useful Post: | ||
04-17-2012, 04:02 PM | #2 |
Senior Member
Join Date: Apr 2004
Posts: 5,075
Thanks: 215
Thanked 903 Times in 509 Posts
|
Thats unbelievable and very creative.Wow!
__________________
SIKSUKR |
04-17-2012, 05:24 PM | #3 |
Senior Member
Join Date: Jun 2008
Location: Portsmouth. RI
Posts: 2,231
Thanks: 400
Thanked 460 Times in 308 Posts
|
This is how you do it. The BAGS have water in them. Once you go under the bridges..you dump the water and the boat goes upright again. BRILLIANT. NB
Last edited by NoBozo; 04-17-2012 at 06:00 PM. |
04-17-2012, 07:26 PM | #4 |
Senior Member
Join Date: Apr 2004
Location: Exeter, NH or @ WCYC on weekends
Posts: 250
Thanks: 7
Thanked 46 Times in 28 Posts
|
Where is the 65' bridge on Winnipesaukee? How does this apply to the lake?
|
04-18-2012, 07:42 AM | #5 |
Senior Member
Join Date: Apr 2004
Location: Moultonborough
Posts: 2,877
Thanks: 331
Thanked 1,662 Times in 581 Posts
|
Pretty cool.......might work on some of our bridges.
|
Sponsored Links |
|
04-18-2012, 07:58 AM | #6 |
Senior Member
Join Date: Jul 2009
Location: On the move...
Posts: 987
Thanks: 113
Thanked 248 Times in 133 Posts
|
Nice! That's one of the times you don't get a do over if your geometry is off
|
04-18-2012, 08:32 AM | #7 |
Senior Member
Join Date: Apr 2004
Location: formerly Winter Harbor, still Wolfeboro
Posts: 1,154
Thanks: 293
Thanked 501 Times in 281 Posts
|
80 ft mast under a 65 ft bridge...
Seeing is believing (I guess), but let's remember that bridge clearances are given at high water, and mast lengths are measured end to end. This having been said, the mast sets into the boat maybe about 6 ft below the deck (leaving 74 feet over the deck, and, if the boat passed under the 65 ft bridge at low tide (say, maybe 5 ft tide), then the clearance would be 70 ft, so the boat and mast would have to make it under with 74 ft over the water. Still, a very clever bit of boatmanship.
Maybe some of the math whizzes can calculate the angle of healing necessarty to clear the bridge. |
04-18-2012, 09:06 AM | #8 |
Senior Member
Join Date: Aug 2007
Location: South Down Shores
Posts: 1,942
Thanks: 541
Thanked 570 Times in 335 Posts
|
Assuming the bridge clearance really is 65ft, and the mast is 80ft end to end, with the base being roughly at water level (since it goes through the top of the boat and down into the hull) you'd need a list angle approximately 35.7 degrees.
__________________
[insert witty phrase here] |
04-18-2012, 10:24 AM | #9 |
Senior Member
Join Date: Jul 2004
Posts: 225
Thanks: 41
Thanked 86 Times in 46 Posts
|
Who would have figured.
Last edited by pm203; 04-18-2012 at 09:41 PM. |
04-18-2012, 11:48 AM | #10 |
Senior Member
Join Date: Jul 2002
Location: Pennsyltuckey, Tuftonboro, Moultonborough
Posts: 1,495
Thanks: 355
Thanked 224 Times in 120 Posts
|
Troublemaker.
__________________
"When I die, please don't let my wife sell my dive gear for what I told her I paid for it." |
04-18-2012, 12:35 PM | #11 | |
Senior Member
Join Date: Aug 2008
Location: Alton Bay
Posts: 293
Thanks: 86
Thanked 78 Times in 49 Posts
|
Quote:
|
|
The Following 2 Users Say Thank You to AB_Monterey For This Useful Post: | ||
BroadHopper (04-18-2012), NoBozo (04-18-2012) |
04-18-2012, 04:06 PM | #12 |
Senior Member
Join Date: Jul 2008
Location: West side Winnipesaukee, Lakes Region
Posts: 516
Thanks: 20
Thanked 52 Times in 40 Posts
|
There are other threads and posts that really don't fully apply to lake. !!!
The other side of coin is: been in that situation during a transit of Inland Waterway. Quite interesting! Does not matter if boat designer measures mast end to end, as long as proper calculations are made at water level, and I've seen on many specs for a mast height above water! |
04-18-2012, 05:57 PM | #13 |
Senior Member
Join Date: Jan 2010
Posts: 620
Thanks: 259
Thanked 158 Times in 100 Posts
|
What is the clearance for the Rt 3 bridge at the Weirs? Can a sailboat get through there with no trouble?
|
04-18-2012, 06:12 PM | #14 |
Senior Member
Join Date: Jun 2008
Location: Portsmouth. RI
Posts: 2,231
Thanks: 400
Thanked 460 Times in 308 Posts
|
|
04-18-2012, 06:21 PM | #15 |
Senior Member
Join Date: Jun 2008
Location: Portsmouth. RI
Posts: 2,231
Thanks: 400
Thanked 460 Times in 308 Posts
|
Just From My Own Experience
Those skippers that "Do The Waterway" with sailboats know Exactly how high their masts are from the Waterline. The key is waterline to top of mast.....including masthead instruments.. (Wind speed and relative wind direction... radio antenas...etc) NB
|
04-18-2012, 07:57 PM | #16 | |
Senior Member
Join Date: Jul 2008
Location: West side Winnipesaukee, Lakes Region
Posts: 516
Thanks: 20
Thanked 52 Times in 40 Posts
|
Quote:
I think I had read somewhere of clearance 20-25'. Thanks Some sailboats have an easy method to hinge the mast at deck fitting, in order to get under obstructions. |
|
04-21-2012, 02:27 PM | #17 |
Senior Member
Join Date: Apr 2004
Location: Kuna ID
Posts: 2,755
Thanks: 246
Thanked 1,942 Times in 802 Posts
|
I can't imagine that suspending that much weight off the mast is a terribly good idea. Imagine that boat hitting a good sized wake while in a balancing like that?
|
04-21-2012, 07:14 PM | #18 | |
Senior Member
Join Date: Jun 2008
Location: Portsmouth. RI
Posts: 2,231
Thanks: 400
Thanked 460 Times in 308 Posts
|
Quote:
Fore and aft "pitching" of the boat in seas, (waves) combined with lateral heeling under wind load from the sails is much more stressful to the MAST than going under a bridge with ballast bags over the side. BTW: Looking at the waterway charts there are various bridges and obstacles that skippers will become aware of. Bigger boats usually "Go Outside" for sections of the waterway that have ...ISSUES. The other ISSUE for bigger boats in the waterway is "Draft" of the boat. The waterway is not all that deep in places...deeper draft...another reason to "Go Outside". It all depends on how fast you need to get there..(Fla). OUTSIDE is the fastest way...for those inclined.....and experienced with offshore... NB |
|
The Following User Says Thank You to NoBozo For This Useful Post: | ||
no-engine (04-21-2012) |
04-24-2012, 01:46 PM | #19 |
Senior Member
Join Date: Aug 2008
Location: Alton Bay
Posts: 293
Thanks: 86
Thanked 78 Times in 49 Posts
|
Fun day at the boat launch
Rather than start a new topic.
Adventures at the launch.... Sometimes, bad ideas are contagious. http://www.bitoffun.com/video_vault/boat-launch-fun.htm |
The Following User Says Thank You to AB_Monterey For This Useful Post: | ||
Lakegeezer (04-25-2012) |
04-25-2012, 11:46 AM | #20 | |
Senior Member
Join Date: Apr 2004
Posts: 523
Thanks: 47
Thanked 123 Times in 63 Posts
|
Quote:
|
|
04-25-2012, 05:37 PM | #21 |
Senior Member
Join Date: Aug 2008
Location: Alton Bay
Posts: 293
Thanks: 86
Thanked 78 Times in 49 Posts
|
I kept saying, "No, they're not..." and they just kept on coming.
|
04-26-2012, 06:36 AM | #22 |
Senior Member
Join Date: Apr 2004
Location: Exeter, NH or @ WCYC on weekends
Posts: 250
Thanks: 7
Thanked 46 Times in 28 Posts
|
Wait there's another way...
A few years back, I was at the Selectmen's meeting in Wolfeboro. I was there on WCYC business, but they were discussing the upcoming Smith River bridge renovations. Someone poised the question about raising the bridge to make better use of Back Bay. After a brief discussion one of the Selectmen said, "We don't need to raise the bridge, we'll just dig the channel deeper". To which the state engineer responded, "Why didn't we think of that..." and the audience clapped with approval of such a simple solution to the problem.
I rolled my eyes back in my head and thought "if this is what I have to work with... I might as well go home now. |
Bookmarks |
|
|