I'm moving sailboat to very desirable power boating area downtown Tampa and will have to go under 17 foot clearance... Any suggestions for lowering and marking off the angle as a point of reference???
Lowering mast to precisely 16' what angle 45 degrees??
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Just Lower it Into the Crutch
I would not want to be underway with the mast part way down and unsupported. Lowering it part way or all the way is not a big difference in effort but it would be a huge difference in stability. To check on the clearance make up a 15' line with a weight on one side and a loop on the other hoist it up to the top with the main halyard and it will show you the height above the water of the end of your mast.
I would not want to be underway with the mast part way down and unsupported. Lowering it part way or all the way is not a big difference in effort but it would be a huge difference in stability. To check on the clearance make up a 15' line with a weight on one side and a loop on the other hoist it up to the top with the main halyard and it will show you the height above the water of the end of your mast.
Water is flat calm inside the area... I was thinking a pole that extended up to support the mast at that height... The pole could be lashed to gain stability... The mast could be lowered prior to leaving the dock as it's only few hundred feet to the bridge.... Different coming back of course... Also, wouldn't there be more safety as it's not lowered entirely??? How long is the mast??? Geometry should figure out what it is at the step... Then simple measurement to the waterline from the step could be added...
Maybe measure up 9' from the crutch .. Is the crutch 7' from the waterline?? Maybe an extended pole at the 16' mark lashed to the crutch ??? Thank you for such clever and helpf answers I greatly appreciate the two previous posts!
Forgot to mention plenty of restaurant docks on both sides of the bridge that could be utilized to carry out this exercise!!
Attach a large bag filled with water to the halyard. Move it to the gunnel by hand. the boat should tip to the side until the bag hits the water. Haul in the halyard (raise the sail) and the boat will tip further. Once under the bridge "lower the sail" and revocover the bag by dumping the water. There is a video of this on youtube. Apparently this guy does this regularly.
I've seen that performed in Ft Lauderdale... They would sail under the bridge... Maybe do it on the Starboard side to keep the engine lower in the water!!! Worth a try for sure thanks!!!
Your welcome. more to the point, how high is your masthead above the water?
The formula is sin(theta) =rise/ hypotenuse where the hypotenuse is the masthead height above the water when upright and the rise is the vertical clearance (factor lower for safety) you are trying to get under. Rewriting for theta sininverse(rise/hyp)=theta make sure you are in degrees mode and not radians
The formula is sin(theta) =rise/ hypotenuse where the hypotenuse is the masthead height above the water when upright and the rise is the vertical clearance (factor lower for safety) you are trying to get under. Rewriting for theta sininverse(rise/hyp)=theta make sure you are in degrees mode and not radians
after watching it again I see that he has a horizontal control line to limit how far the bags can go away from the boat.
if you are not doing the 80 degree on her side thing (17' is pretty low ) this has got to be easier than dropping the mast every time you want to go sailing
if you are not doing the 80 degree on her side thing (17' is pretty low ) this has got to be easier than dropping the mast every time you want to go sailing
This healing idea is NUTS.
You would have to heal the boat to at least 60 degrees for this to come close to clearing.
And that does not factor the difficulties in steering and powering the boat at the angle. Or the fact that the base of the rig will rise as the boat heels.
Be sure to take video if you try it!
You would have to heal the boat to at least 60 degrees for this to come close to clearing.
And that does not factor the difficulties in steering and powering the boat at the angle. Or the fact that the base of the rig will rise as the boat heels.
Be sure to take video if you try it!
I'm not convinced this leaning over thing will not work. The motor has it's own steering control.... Where is the 60 degree calculation???
I would take it all the way down and use this method for raising and lowering. It works great! Just loosen up the stays enough.
http://www.sailingtexas.com/Movies/Hunter23lowermast/hunter23lowermast.html
http://www.sailingtexas.com/Movies/Hunter23lowermast/hunter23lowermast.html
Really????
OK. Lets assume your mast top is only 35 feet above waterline. Your boat has to come to 24 degrees from horizontal to clear, or SIXTY SIX degrees of heel.
Holy Cow!
Holy cow that did it for me.... wow 65 degrees is way over.... same applies for lowering it as well it has to come down 65 degrees if you lowered it in any direction correct??? I was watching the video holy cow doesn't come down smooth.
OK. Lets assume your mast top is only 35 feet above waterline. Your boat has to come to 24 degrees from horizontal to clear, or SIXTY SIX degrees of heel.
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Holy cow that did it for me.... wow 65 degrees is way over.... same applies for lowering it as well it has to come down 65 degrees if you lowered it in any direction correct??? I was watching the video holy cow doesn't come down smooth.
OK. Lets assume your mast top is only 35 feet above waterline. Your boat has to come to 24 degrees from horizontal to clear, or SIXTY SIX degrees of heel.