Kittrina - dismasted.

[Rum_Pirate]

Set out on circumnavigation of St.Kitts. 50-60 miles.

Light winds. Saw a pod of 8 Dolphins.

Bang. The bracket holding the folding mechanism for the outrigger parted company with the boat.

Only had 1/2 miles to a little Harbour.
Replaced the 1/2” stainless steel bolts that had sheered off - cavity corrosion.

Set off again.

Bang, mast broke. Stainless steel Tang on the port side holding outer shroud pulled out. More cavity corrosion.

Thankfully nobody killed or injured.

Now all structural stainless steel fittings and bolts need to be removed, inspected or probably replaced just in case.

Might write an article with a lot more detail and information and sent it it Yachting monthly or Practical Boat Owner so others may benefit and check. Which do you suggest?

 

[Rum_Pirate]

Heading down today to remove mast and haul out

 

[srm]

Not unusual. have had cavity corrosion on ss hull of Waverider buoy where barnacles had settled.
Took ss rudder heel fittings off a Prout catamaran. Outsides nicely polished, insides looked like a cross between Swiss cheese and wood attacked by gribble.

 

[Rum_Pirate]

I now cannot trust any of the structural ss elements aboard the boat.
All have to be removed and replaced.

 

[Martin_J]

Lost for words... For now, just glad you're all back safe and nobody injured..

You'll have quite some story to tell though :/

 

[Martin_J]

The way you wrote this post though you sound calm and collected...

Just goes to show there are so many parts to a rig... and it often only needs one bit to break...

 

[Zing]

My sympathies.

Yep, boat stainless like 316 is a crap material. Shiny bling. A good material will never fail. It’s mad, we know it fails, but we repeatedly use the stuff.

 

[penfold]

It's a pretty good boating material, it just isn't infallible. A non-failing material doesn't exist.

 

[Zing]

It's a pretty good boating material, it just isn't infallible. A non-failing material doesn't exist.

Yes it does exist. The better grades of stainless won’t fail. Ditto of titanium and bronze and many other alloys.

 

[penfold]

Duplex is not affordable for most people, nor is bronze; titanium has exciting failure modes all of its own as well as being expensive.

 

[Chiara’s slave]

Duplex is not affordable for most people, nor is bronze; titanium has exciting failure modes all of its own as well as being expensive.

I don’t think ‘expensive’ need come into it for an F27. They’re part carbon, and high spec fibres, and hi tech sails etc. they were hugely expensive when new, another grand or 2 on the new price would barely have been noticed.

 

[Rum_Pirate]

 

[Rum_Pirate]

 

[Rum_Pirate]

 

[Rum_Pirate]

 

[Blueboatman]

View attachment 156889

D I’ve sent you a pm

 

[fredrussell]

A sad sight, glad you’re all ok.

 

[Bouba]

As you say...no one was hurt...that’s all that matters

 

[zoidberg]

Colligo Marine could be your friend....

 

[Zing]

Duplex is not affordable for most people, nor is bronze; titanium has exciting failure modes all of its own as well as being expensive.

The material cost difference will be negligible. Most of the cost is the manufacturing cost. Also, basic duplex is actually cheaper and better than 316.