What are the factors that lead to a dismasting?

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Oct 25, 2005
735
Catalina 30 Banderas Bay, Mexico
Henk

I cant resist ... you are leading with your chin ... :) --- THIS IS ALL IN FUN --- It is banter, it is not a personal attack. Henk has sailed miles of ocean in his Hunter 43. I have NO doubt that he is a very good sailor and that his boat is sound and seaworthy ... I just feel the need to tease him a bit. If that might offend you ... please move on ... there's nothing to see here ... :D "Rivendel had neither an inner stay nor running backstays when we bought her new in 1991 ..." So you bought a boat with a rig that was not designed to have an inner forestay or running backstays? You decided that this was some flaw in the rig and the designer of the boat failed to include something you "had to add". Why would you do that? Who did the engineering of the modification? How was the mast section reinforced to handle the increased compression loads? The mast step? Who did the engineering of the loads on the hull at the inner forestay attachment point? The loads on the deck and hull of the running backstay loads? What leads you to think that the boat is not compromised by the increased loads your modifications have made? How sure are you that your redundancy has not increased the chance of failure of other parts of the system? If you didn't think the boat *as designed* was ready to go offshore, why didn't you buy one that was? If you wanted a cutter why not get a boat that was designed as one? Sloops rarely make good cutters when compared to boats designed as cutters in the first place. "The running backs only serve the function of keeping the stick inboard, particularly when the staysail is pulling pretty hard. In practice, however, we ALWAYS set at least one running back, even though it makes tacking and gybing a bit more work." :) ... so ... you are saying that the boat you bought is in danger of loosing the rig without the running backs when a sail that is same size as heavy air jib is driving the boat? That would mean that the boat's sister ships have a reputation for dropping their rigs on a regular basis ... and you decided to modify this shakey rig and take it offshore anyway? That sounds like a poorly designed rig to me. :) "The inner stay serves indeed several different purposes. However, I fail to see why the fact that it also can carry the staysail, a series of festive flags or a forehatch awning, while helping me steady myself on the open foredeck, should in any way detract from its 24/7 role as a back-up forestay!" You don't need a forestay when backing up ... :) Sorry ... that was too easy ... the designer didn't think it needed one, but you do ... no designer I know uses running backstays and inner forestays on cruising rigs for any other reason than to fly staysails with proper tension in the stay ... I could be wrong, the designer of every sloop (including the designer of your boat) that has ever lucked out and made it across a lake might be wrong too ... what are the odds of that? "To rely on a headsail's luff cord, tack shackle or even halyard, as gratis forestay backups, as argued by Moody, sounds to me like hoping to use a Scottish kilt as a redundant parachute.... Rivendel's inner stay has a breaking strength of approx. 14,000 lbs, I believe, whereas our genoa components only have a fraction of that strength." So you have a 3/8" inner forestay. I was not aware that Legend 43's had a history of dropping rigs. There is a word that describes designers of 43 foot boats that need an extra 14,000 pound test wire to hold the rig up ... the word is "unemployed". :D I think you needed the extra rigging. I don't think the boat has a serious design flaw that required it. If you are still with me, I'll also say that I think that the modification you made was very sensible. It is a common choice of many owners of production sloops that are heading offshore. Not for the same reasons you did it, but to create a more flexible sailplan and retain a roller furling headsail. What you have done is proved that a prudent sailor can take a production boat and take it across oceans. I admire you for that, and if we ever find ourselve sharing an anchorage, the beer is on me (if you promise not to pour it on my head). I'd like to hear some of the stories of your exploits. Fair winds, Randy
 
B

Big Joe

Randy

Thanks for your view on the solent rig, I appreciate it. Big Joe.
 

Rick D

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Jun 14, 2008
7,182
Hunter Legend 40.5 Shoreline Marina Long Beach CA
Henk and Moody Presidential Debates at 0700...

...You guys are to be commended for having a lively debate with courtesy, respect and humor. Parking your ego for a while to engage with respect is the sign of real expertise and education. Rick D.
 
Jun 5, 1997
659
Coleman scanoe Irwin (ID)
Moody, answering your own post ain't fair! :(

I reckoned it was my turn (if not for the fact that you had retired into your hole and I had already resolved to wait til Groundhog Day). Responding to ONE of your posts takes me all day and now I am staring at TWO of these beasts....! So, please allow me to start with your last paragraph and then work my way backwards, at least until I come to a statement we can both agree on. Fair enough? Your last paragraph says: " If you are still with me, I'll also say that I think that the modification you made was very sensible. It is a common choice of many owners of production sloops that are heading offshore. Not for the same reasons you did it, but to create a more flexible sailplan and retain a roller furling headsail. What you have done is proved that a prudent sailor can take a production boat and take it across oceans. I admire you for that, and if we ever find ourselve sharing an anchorage, the beer is on me (if you promise not to pour it on my head). I'd like to hear some of the stories of your exploits." Uhmmm......actually, can't find a whole lot to disagree with there. Give me some time to think of something, though and you and I can have at it again (after that promised beer, of course :)) Fair winds Flying Dutchman
 
Oct 25, 2005
735
Catalina 30 Banderas Bay, Mexico
Cool ...

Now can we argue about who's buying? :D BTW. I can't tell from the pics, did you add a bowsprit and use the standard stem fitting for the inner forestay? Or did you add a hard point on the deck aft of the chain locker?
 
Oct 25, 2005
735
Catalina 30 Banderas Bay, Mexico
Very Nice Henk

Thank you for taking the time to post that! At first glance, adding an inner forestay looks easy. When done right, it looks like it was no big deal. Your post paints a very good picture of the amount of thought that it takes to do it right. It was neither easy or inexpensive. Are those Hood furlers? They look like Sea Furls with continuous furling lines? Nice work, and a great description of the mods. Randy
 
Jun 5, 1997
659
Coleman scanoe Irwin (ID)
Yes, both are Hood furlers, but...

whereas the staysail furler is a simple, continuous line drive (LD) model, the jib furler is a "Seafurl 5", Hood's (first?) foray into the bluewater furling market during the late 90's. The original Hood furler installed by Hunter was not up to the task and I was looking for a different brand when I saw one of the first Seafurl 5's on a boat show in 96 or 97 and was impressed with the construction. I took a gamble with it and have been quite happy with it ever since. The rigger who installed our Seafurl 5 in Kona (HI) had worked for Harken and could not stop remarking how many "Harken features" seemed to be incorporated in the Seafurl 5 (who knows who really owns Hood Yacht Systems these days?), except at 2/3 of the Harken price. In 1999 Practical Sailor gave the Seafurl 5 its "best value" recommendation. Curious as to your comments. Can't resist telling you about our best sails & rigging upgrades this year. Eric Leroux, a sailmaker who used to work for the Beneteau design team, has been sailing and working in the Vanuatu/New Caledonia area for several years now and did a great job on recutting one of our mainsails in 2005. So, for the 2006 season we asked him to recut our 110 genoa into a yankee with a high clew, in order to make the jib easier to handle in the 15-20 kn range while allowing our staysail to draw better as well, thereby making up for some of the lost area. The new yankee (see picture) is great for the often rough and windy seas here and has much less tendency to collapse when steering deep, thus reducing the need for poling out. Wish we had done that conversion earlier! Meanwhile, I was sick and tired of our Dutchman flaking system. The weight of the main (especially when wet) is simply too large for the nylon lines to fully control the sail. Since we needed a new sailcover anyhow, we now had a great opportunity to convert over to a a lazybag system with integral lazyjacks (see picture). Again, Eric did a great job and we now wish we would have done that years ago as well. Even salty seadogs are apparently never too old to learn new tricks. :D Flying Dutchman
 
B

Benny

Loose Shrouds or stays.

Keep your rigging tuned to specs and periodically inspect riggin hardware.
 
Jun 5, 1997
659
Coleman scanoe Irwin (ID)
Yep, always a good idea to check your parachute

Just don't forget to bring your back-up chute as well! Unless the ground is close enough to jump without one, of course (or you can float as easy as a hot-air balloon). Have fun Flying Dutchman
 
Oct 25, 2005
735
Catalina 30 Banderas Bay, Mexico
Hood Furlers ...

The Hood furlers have had some problems, but not really more than other brands. One of the features is both a blessing and a curse. I've mentioned that the jib and halyard can keep the mast up if the headstay fails. When the jib is tacked to the deck, the jib luff and halyard do not share attachment points with the headstay. there are two load paths. One is the masthead truck > toggle> headstay> stem fitting. The other is Jib Halyard> Sail luff> Tack fitting. The failure of any part of one system has little effect on the other. Most furling systems force the two load paths to share the stem fitting. The Hood system is the only one I know of that keeps the load paths separate. The Hood uses the tack fitting to take the halyard load through the jib luff, just like a hanked on sail. I think this is a great bit of design. Unfortunately it also makes Hood furlers more sensitive to halyard tension. The bearings in a Hood system are small compared to some of the other furlers, they can bind if the halyard tension is too high. If the halyard is too loose the tension on the tack fitting goes to zero and the whole furler slides down the headstay to rest on the stem fitting. When the halyard is loose the drum and foils wobble about on the headstay and the furler is hard to use. If the halyard tension is just right they work just dandy and are the only furlers that form a truly independent back-up for the headstay. Other furling systems rely totally on the the single clevis pin at the stem fitting for both functions ... a single point failure can bring the rig down ... ala Maxiumus in the S-H. Henk's redundant systems are redundant. I get the feeling that if Henk doesn't get where he's going, it won't be because his boat let him down.
 
Jun 5, 1997
659
Coleman scanoe Irwin (ID)
Thanks for that insight, Moody!

All our Hood furlers were/are indeed rather sensitive to halyard tension. However, the Seafurl 5 appears to have sturdier roller bearings which keep trucking, even under high tension. Fair winds, Flying Dutchman
 
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