Tall mast, low bridge - PeachParts Mercedes-Benz Forum

kerry · #1 10-20-2011, 08:11 PM

How do you get 80 ft of mast under a 65 ft bridge? [VIDEO]

Hatterasguy · #2 10-20-2011, 08:14 PM

That's one way of doing it! Also a great way to get a 7ft keel over a 5ft sandbar.

PaulC · #3 10-20-2011, 08:18 PM

Invention - power telescoping mast. Think of a really big vintage Cadillac power antenna...

Botnst · #4 10-20-2011, 09:00 PM

Trigonometry in action.

Hatterasguy · #5 10-20-2011, 09:55 PM

And here I was thinking it was useless as I was sitting in class!

Fulcrum525 · #6 10-20-2011, 10:04 PM

They's really impressive and at the same time quite scary! I would imagine that if the weights were a little too far to the left the mast would hit the bridge but any further to the right and it would pull the boat right over on her side

Hatterasguy · #7 10-20-2011, 11:09 PM

Nah sailboats have a good righting arm, worst case you cut the lines and it will pop right back up. I think the point of no return on say a Swan 46 is 100-110 degrees, after that your going for a ride.

Good sailboats such as that one can roll past 90 degrees, he was probably oh 35-40.

kerry · #8 10-20-2011, 11:17 PM

How did he get the weights to stay out to starboard to initiate the heel?

Hatterasguy · #9 10-20-2011, 11:34 PM

Probably used lines from the shore or dock to pull the boat over. I suspect the boat was ballasted with his crap to favor starboard and the weights just helped matters along.

You can calculate how much weight is needed to heel a boat like that, I don't have the calculations but I bet their is an Iphone app for it!

That's one way to refloat a keel boat to, although lines from shore are preferable. When I get lazy I sail the star boat over the bar at the mouth of the harbor that way, sit on the leeward and with any breeze we are right over.

KarTek · #10 10-21-2011, 06:54 AM

As far as going over, I don't think it would ever happen since the weight of the ballast would instantly lighten as soon as it hits the water and the boat would stop tipping.

Kuan · #11 10-21-2011, 08:11 AM

Is that an approved method? It's a good thing there was no wind.

t walgamuth · #12 10-21-2011, 08:29 AM

I'd lay odds that fellow was an engineer or a tech oriented Architect like myself.

R Leo · #13 10-21-2011, 09:32 AM

Quote:

Originally Posted by t walgamuth

I'd lay odds that fellow was an engineer or a tech oriented Architect like myself.

And I'd lay odds that wasn't the first time he'd ever done that particular maneuver either. They had it down pat.

kerry · #14 10-21-2011, 10:06 AM

I'd be a little concerned that with no means of holding the weight to starboard that a gust of wind or wave from a powerboat would cause enough motion for the weights to swing towards the boat, straightening up the boat. Granted, that would require the weights to move upward but I'd be a lot more comfortable if a small motorboat was traveling alongside with a line holding the weights out.