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19-02-2020, 14:50
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#1
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Registered User
Join Date: Oct 2019
Location: Seattle, WA
Boat: 1980 Choate CF40
Posts: 117
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How much weight up the mast?
Honesty time. I'm a heavy guy. I'm reasonably in shape, assuming round is a shape, or rather I'm out of shape but working on it.
I have a 50 year old boat with an aluminum mast with single spreaders. Is it reasonable to think that the mast will hold my weight if I climb the mast to the top? For reference, I weigh currently what two average humans do.
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19-02-2020, 15:02
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#2
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Registered User
Join Date: Jul 2007
Location: Toronto, Canada
Boat: Luders 33 - hull 23
Posts: 1,787
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Re: How much weight up the mast?
If your boat is only 22 feet, I would not go up there....
Seriously...whats your good old boat?
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19-02-2020, 15:39
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#3
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Registered User
Join Date: Oct 2019
Location: Seattle, WA
Boat: 1980 Choate CF40
Posts: 117
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Re: How much weight up the mast?
It's a 27-foot Santana
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19-02-2020, 15:51
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#4
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Registered User
Join Date: May 2015
Location: Port Kent, NY
Boat: Ericson 28/2
Posts: 98
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Re: How much weight up the mast?
Do your family and the first responders a favor and don't go up your mast. Not worth it.
__________________
afrakes
RebaGee
E-28/2
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19-02-2020, 16:18
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#5
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Moderator and Certifiable Refitter
Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: C.L.O.D.
Posts: 20,241
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Re: How much weight up the mast?
Quote:
Originally Posted by Morgali
Honesty time. I'm a heavy guy. I'm reasonably in shape, assuming round is a shape, or rather I'm out of shape but working on it.
I have a 50 year old boat with an aluminum mast with single spreaders. Is it reasonable to think that the mast will hold my weight if I climb the mast to the top? For reference, I weigh currently what two average humans do.
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Hmm... I think you should give us a more accurate idea of your weight.
The average human weight is about 62 kg (137 lb) whereas the average USA male is 90 kg (195 lb).
So that puts your weight somewhere between 124 kg (274 lb) and 180 kg (390 lb).
With that spread, it is difficult to give advice except to say "better to safe than sorry".
You also state you are climbing the mast so does that mean you won't be using a halyard to haul you up.
If you plan to be hauled up the mast, do make sure all the equipment (halyards, blocks, winch etc) are strong enough for the task.
__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
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19-02-2020, 17:02
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#6
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Moderator Emeritus
Join Date: Aug 2005
Location: Carlsbad, CA
Boat: 1976 Sabre 28-2
Posts: 7,505
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Re: How much weight up the mast?
The mast should hold up just fine. The boat may not have the righting moment to keep you out of the water. I've got a 28' boat and have no problem going to the masthead at 170#. If you are talking 300# plus might be dicey but you'll have to try it out or find an engineer to do a calculation or whatever engineers do. Could just stand beside boat and try and pull yourself up via a halyard and see if the mast comes down to you or you go up it.
__________________
Peter O.
'Ae'a, Pearson 35
'Ms American Pie', Sabre 28 Mark II
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20-02-2020, 08:54
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#7
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Registered User
Join Date: Apr 2017
Location: Bokeelia Florida 33922 USA
Boat: Bristol 32
Posts: 72
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Re: How much weight up the mast?
Have a pro do it. Cheaper than medical bills. Or worse, funeral costs.
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20-02-2020, 09:09
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#8
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Registered User
Join Date: Aug 2006
Location: Skagit City, WA
Posts: 25,453
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Re: How much weight up the mast?
That weight up a 27 foot boat's mast may be a bit much. 300# up 35 feet is over 10000 foot lbs of leverage. I doubt your boat weighs 10000#, much less has 10000# ballast.
__________________
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard
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20-02-2020, 09:10
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#9
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Registered User
Join Date: Dec 2008
Posts: 321
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Re: How much weight up the mast?
No. You can't go up there. C'mon.
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20-02-2020, 09:14
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#10
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Registered User
Join Date: Jun 2011
Location: Texas
Boat: Baba 35
Posts: 381
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Re: How much weight up the mast?
A good motivator to get in shape is what we have here.
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20-02-2020, 11:08
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#11
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Registered User
Join Date: Oct 2019
Location: San Leon, Texas
Boat: Knysna 440 once I get my new dock and the canal gets dredged
Posts: 914
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Re: How much weight up the mast?
Quote:
Originally Posted by siamese
No. You can't go up there. C'mon.
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I think I'd start with some stage weights first just to see if it works. Or you could hire me to go up (150lbs dripping wet)
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20-02-2020, 11:43
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#12
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Registered User
Join Date: Jun 2010
Location: Caribbean
Boat: Corbin Ketch 39ft
Posts: 300
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Re: How much weight up the mast?
I am 69yo in good shape and go up my mast fairly routinely. Even so I cannot say it is stress free. If you are not in a reasonable shape, heavy, on a boat that may not have sufficient righting moment, think hard about what you are doing. Pulling yourself up with a 4 part purchase and doing your own work is rewarding but get in shape, try rope climbing in a controlled situation before adding mental stress to the bill
__________________
Joe Bayne
Jubilee
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20-02-2020, 12:28
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#13
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Moderator
Join Date: Feb 2010
Location: La Ciudad de la Misión Didacus de Alcalá en Alta California, Virreinato de Nueva España
Boat: Cal 20
Posts: 20,441
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Re: How much weight up the mast?
Quote:
Originally Posted by Cheechako
That weight up a 27 foot boat's mast may be a bit much. 300# up 35 feet is over 10000 foot lbs of leverage. I doubt your boat weighs 10000#, much less has 10000# ballast.
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10,000+ ft-lb only if gravity decides to act sideways all of a sudden.
__________________
Num Me Vexo?
For all of your celestial navigation questions: https://navlist.net/
A house is but a boat so poorly built and so firmly run aground no one would think to try and refloat it.
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20-02-2020, 12:43
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#14
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Moderator
Join Date: Feb 2010
Location: La Ciudad de la Misión Didacus de Alcalá en Alta California, Virreinato de Nueva España
Boat: Cal 20
Posts: 20,441
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Re: How much weight up the mast?
Quote:
Originally Posted by Morgali
Honesty time. I'm a heavy guy. I'm reasonably in shape, assuming round is a shape, or rather I'm out of shape but working on it.
I have a 50 year old boat with an aluminum mast with single spreaders. Is it reasonable to think that the mast will hold my weight if I climb the mast to the top? For reference, I weigh currently what two average humans do.
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If you have places port and starboard to tieoff to you can make this work.
Take a 75-100’ rope and tie a knot thru the main halyard shackle near the middle of the rope then raise until main halyard is tight. Secure the bottom ends on opposite sides at least 25’ out from centerline of boat.
Tie the boat bow and stern to both port and starboard. Spring the boat fore and aft preferably on both sides.
This needs to be on a calm day with minimal waves or wake.
Go up on the jib halyard with spinnaker halyard as backup.
__________________
Num Me Vexo?
For all of your celestial navigation questions: https://navlist.net/
A house is but a boat so poorly built and so firmly run aground no one would think to try and refloat it.
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20-02-2020, 13:45
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#15
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Registered User
Join Date: Oct 2016
Location: Monroe, Ga
Boat: 1987 Sabre 42 C/B
Posts: 381
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Re: How much weight up the mast?
What do you need to go up the mast for? You can use a halyard to pull the mast down to you on a dock. Have do this on smaller boats to do work at the mast head and to install things through the hull (below the water line) before.
Foster
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