Woodlouse
Well-Known Member
I hope you've got £25k handy to back that up...!
I've got about £6.75, will that do?
I hope you've got £25k handy to back that up...!
I've got about £6.75, will that do?
I don't know where you'll find evidence on the internet. But as an example at least three of Cornish Cruising's baviaria's have required major relaminating and strengthening around the keels after not particularly dramatic groundings. There was another one, I believe privately owned, that had it's forestay pull out from the stem.
It's a very small set of examples from many thousands of yachts built, and when you occasionally work with a surveyor you get to see some pretty interesting things breaking. But despite the thousands of boats by hundreds of manufacturers it does seem that Bavaria's have more than their fair share of issues.
One thing for BavBashers - not being one, but then why not?![]()
Just remembered a story.
There was a young couple, about 30 years, with two small children. They bought Bavaria thirtysomething (33 or 37, can't recall) in Turkey and sailed for Cyprus. After few days decided to enter Paphos. Nice conditions, F3-4.
Somewhere close the boat capsized in the swell. Woman fell overboard and perished. Man managed to swam to the shore and called for rescue - one of rescuers perished at sea too. Children were in forecabin and when the boat finally washed ashore they were saved.
Putting this here as was reminded I write to much about stability, while capsize of boat is such a rare thing...
Wouldn't be allowed to build in Poland, required minimum is 140. Recommended 160...But the AVS is 138'..... So very safe.
Wouldn't be allowed to build in Poland, required minimum is 140. Recommended 160...
Baggywrinkle - yes, I believe this is the story.
As I heard, the skipper "was not suspecting such difficult conditions in the harbour" and "this was freak wave". Not knowing much more than I heard, but there is a kind of bar or shallow there, and with substantial swell at sea breakers can develop, while for those on open sea it's not obvious.
I just remembered the story seeing a video of 'Cedar' in Svaneke. http://www.ybw.com/forums/showthread.php?347631-Big-seas
Another example of 'unsuspecting' - guys went into a harbour which was closed because of swell, and had been tremendously lucky since this harbour has a gate, usually closed when swell is coming in. What would happen if this was closed I don't want to imagine.
Well, such things happen sometime, close to shallow lee shore; here at least as all our shore is a beach and a lee...
P.S Can someone confirm (for my curiosity) is this a Bavaria (on picture in link)?
Yes, good point... Actually above mentioned Bavaria with 138 AVS seems to be quite good in comparison with some others on the market. Just personally I'd not use the expression "very safe".
Well, as for stability - CE norm (I just made a short glance, as not current in this, but so it seems) requires 120 deg AVs minus some factor for length. Tranona said some boats may result with not much more than 100 deg AVS from this calcullations. Christ...
Polish rule is not mandatory, but still applies to bigger boats and commercial ones. At least a boat I last sailed is required to comply, and surveyed annually for strength, equipment and such. What and how the rulings are used at present I'm not sure, not interested really - I just use them as handy reference, as there are tables for bolt sizes, loads on fittings or rig strengths required and so on. Laws have changed here lately and another change is about to come.
Anyway you may buy any boat in Poland - as you wish - to any standard. A lot is made for well known brands, as they design and specify. Only rule mandatory is CE. And should someone want - even this is not necessary, just wouldn't be allowed to sell in EU.
I cited the ruling as this was a standard on stability, I believe it's required of boats used for chartering here (not sure if still) and not long ago it wouldn't be possible to built boat less stable and deem it suitable "for high sea" ("region I - unlimited"); but naturally for "region II" which means 'sheltered sea waters' requirement is 120 deg. So if you want less stable boat - no problem![]()
edit.
But there is another thing (as for Flabria in link) - ORC calculation is just a calculation. They do not measure actual stability of the boat. What it really is? well, my personal approach to stability measurement is old fashion: inclining experiment. Lay her down and measure. Couple years ago, when asked to make a sailing course - took the boat, couple of students and heave on the hallyards it wasYup, came back up... but nice to be sure.
There was another one, I believe privately owned, that had it's forestay pull out from the stem.
Did you notice AVS for Fisher, Southerly, Vancouver, Nauticat and such?
That is what bothers me lately, yes. Old fashioned coward am I, surely. Used to think offshore boat will not put me under.
As I was shopping for a boat, so looked over some data couple years ago, after some 15 years of not being involved in this. And so I started with the idea of buying nice almost new boat, plenty in the MED for cheap in some 5-10 years age - only to finish with old heavy slow longkeel of true British tradition, needing almost every piece of gear to be put anew...![]()
All those "stability calculations" are as good as methodology used, not necessarily showing the real characteristic, nevertheless usually good way to compare boats. Many show a bit less stability than real, just to be on safe side. For instance CO32 shows 155, but I saw 160 somewhere too. Give or take 10 deg, but some characteristics are scary.
Well, once I've built a small 20' trailering centreboard boat, just for sailing on inshore lakes here, that was more stable than "ocean-going-family-cruiser" now.
And she was unsincable too...
BTW - cannot extract the stability requirements table from the rules, but worthy to mention: for boat less then 7 meters LOD required AVS was 150 deg. and boats such as Folkboat complied. Wooden Folkboats were made in thousands here, some I've seen in UK, still sailing.
Did you notice AVS for Fisher, Southerly, Vancouver, Nauticat and such?
can I ask about your comment re. 'more structural failures'???
I am seriously interested in finding evidence of this. Any links or pointers? Really, not a wind up, just want to find out more. Ta in advance
I witnessed one of those CC boats being grounded... Which lead to extensive damage... I even have a picture of it.... It was on the bar opposite Trelessic house at the bottom of the Fal... The guy was in a rush to get somewere and ran it on at a good 6 knots... I doubt any boat would have survived that without substantial damage to the keel unless they had a steel Frame or a long keel...
Due to the way in which the ballast is bonded in, the keel is both strong and resilient and has
proved able to withstand very hard grounding — full speed against rock — which resulted in so little damage that a simple filling job was the only repair required.
Albin Vega handbook, page 5:
Think I'll stick to a long keel![]()
Pay attention to boat construction methods. From what I know now, I would stay away from boats that are built in two halves. Boats built in halves and joined together create hull problems such as delamination which is evident on my boat. I would also stay away from iron keels in favor of boats with lead keels, and boats with keel stepped masts instead of deck stepped.
Albin Vega handbook, page 5:
Think I'll stick to a long keel![]()
No. The one I'm referring to happened in Falmouth and wasn't a charter boat.Would that be the one that featured in a Bav bash thread on here a couple of years ago? The one that had been bodged after a collision?