Nationals at Richmond Yacht ClubMay 20 - 22
Result
PosBoatTotalRace 1Race 2Race 3Race 4Race 5Race 6Race 7
1Peaches184(4)3(7)4(11)4(15)1(16)1(17)2 (19)
2Motorcycle Irene181(1)2(3)3(6)3(9)5(14)3(17)3 (20)
3Under the Radar237(7)1(8)1(9)1(10)3(13)5(18)5 (23)
4Hot Sheet242(2)4(6)3(9)4(13)2(15)2(17)7 (24)
5Magic Bus303(3)5(8)5(13)6(19)6(25)4(29)1 (30)
6Bombora516(6)7(13)8(21)5(26)4(30)15(45)6 (51)
7Fired Up!5412(12)8(20)6(26)8(34)9(43)7(50)4 (54)
8Freaks on a Leash579(9)9(18)7(25)7(32)7(39)9(48)9 (57)
9Abigail Morgan628(8)11(19)10(29)9(38)10(48)6(54)8 (62)
10Dianne7510(10)10(20)9(29)DNS(45)12(57)8(65)10 (75)
11Artemis765(5)6(11)12(23)DNS(39)11(50)10(60)DNF (76)
12Public Enemy8012(12)12(24)11(35)10(45)8(53)14(67)11 (78)
13Tequila Mockingbird8811(11)14(25)14(39)11(50)14(64)11(75)13 (88)
14Current Affair8814(14)12(26)13(39)12(51)13(64)12(76)12 (88)
15Phoenix10715(15)RET(31)RET(47)DNS(63)15(78)13(91)DNF(107)
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Author: Maryann
Subject: Stability when climbing the mast
Info: (12200 views) Posted: Monday 7-15-13 08:11:49 PM
The rigger I use prefers the boat to be in the water tied off at the dock. We use the hoistway at EYC which allows tying off to a dock on both sides.

:: I'm 195#, and haven't ever had a problem (and have spent
:: way too much time at the masthead). As long as the
:: people on deck are paying some sort of attention, I
:: wouldn't worry too much.

:: Cheers,

:: Patrick
::
:: :: We usually send somebody up using the club's gin pole or
:: :: somebody who is light with an extra halyard.
:: ::
:: :: :: Thanks for the reply Bryan.
:: :: ::
:: :: :: So you are saying that even with the boat on the
:: :: :: trailer, the rigger ran the halyards off to the sides
:: :: :: and tied them off to things? That seems extreme...I
:: :: :: would not have given it a second thought on the trailer,
:: :: :: but we can presume he knows what can happen.
:: :: ::
:: :: :: I've been up the mast on many many boats and this was
:: :: :: the first time I've felt one start to go over - could
:: :: :: have been luck to date though.
:: :: ::
:: :: :: Would love to hear any other experiences.
:: :: ::
:: :: :: :: not sure if i did it right but i recently calculated
:: :: :: :: that my 180 lbs at the top of the mast would flip the
:: :: :: :: boat at the dock if the angle of heal exceeded... what
:: :: :: :: was it... 15 degrees?
:: :: :: ::
:: :: :: :: a rigger that i had re-run a halyard recently requested
:: :: :: :: the boat be on the trailer and even on dry land he took
:: :: :: :: every available halyard and used them to brace the mast.
:: :: :: :: he mentioned that he does the same if the boat is in the
:: :: :: :: water too but its more complicated.
:: :: :: ::
:: :: :: :: :: Just some quick math would say your 160 pounds is
:: :: :: :: :: offsetting the keels lever arm somewhere around 20 feet
:: :: :: :: :: off the water. Above that you're relying on the form
:: :: :: :: :: stability of the hull, so 'yes', all the way up the rig
:: :: :: :: :: should get real squirrelly! That presumes the center of
:: :: :: :: :: the 1100 pound ballast is about 3 feet under water (3300
:: :: :: :: :: ft lb of potential leverage). I know it's a LOT more
:: :: :: :: :: complex than a seesaw, but at the top of the rig your
:: :: :: :: :: lever for that 160 pounds is probably around 28 feet
:: :: :: :: :: above the water (over 4400 pounds).
:: :: :: :: ::
:: :: :: :: :: :: I went up the Express 27 mast not long ago and had a
:: :: :: :: :: :: somewhat scary experience.
:: :: :: :: :: ::
:: :: :: :: :: :: I weigh 160, and at the time there was a 200 lbs guy on
:: :: :: :: :: :: deck with the boat tied to the dock. I was at the top of
:: :: :: :: :: :: the mast doing some work and the guy on deck stepped to
:: :: :: :: :: :: the rail to do something. The boat started heeling
:: :: :: :: :: :: pretty extremely and truly felt like it was going to to
:: :: :: :: :: :: roll all the way over until guy on deck jumped to the
:: :: :: :: :: :: other rail to stabilize the boat.
:: :: :: :: :: ::
:: :: :: :: :: :: Would the boat really roll over like it felt it might?
:: :: :: :: :: :: Any experience with sending people up the mast on this
:: :: :: :: :: :: boat and how much weight is too much?
:: :: :: :: :: ::
:: :: :: :: :: :: We plan to go up the mast fairly frequently with the new
:: :: :: :: :: :: offshore rules for mounting and removing the masthead
:: :: :: :: :: :: VHF when doing offshore races, not to mention if we ever
:: :: :: :: :: :: had a problem and needed to ascend the mast while on the
:: :: :: :: :: :: water.
:: :: :: :: :: ::
:: :: :: :: :: :: I'm wondering what is safe?
:: :: :: :: :: :: 

:: :: :: :: :: :: -dan
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