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Forum: Seamanship & Boat Handling

26-05-2015, 20:44

Replies: 361

Cheeki Rafiki loss report

Views: 57,495

Posted By leftbrainstuff

Re: Cheeki Rafiki loss report

As an engineer I don't share your enthusiasm for bolt on keels.

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Forum: Seamanship & Boat Handling

16-05-2015, 03:16

Replies: 361

Cheeki Rafiki loss report

Views: 57,495

Posted By leftbrainstuff

Re: Cheeki Rafiki loss report

From memory the loss report didn't indicate the vessel was poorly maintained. It did highlight keel maintenance was not adequate.

I've read several loss reports lately so apologies if I've...

Forum: Seamanship & Boat Handling

15-05-2015, 07:06

Replies: 361

Cheeki Rafiki loss report

Views: 57,495

Posted By leftbrainstuff

Re: Cheeki Rafiki loss report

How so?

How many encapsulated keels have failed catastrophically?

We're not talking about degradation of old wet boats, we're discussing catastrophic failures of a design, the bolt on keel,...

Forum: Seamanship & Boat Handling

05-05-2015, 08:15

Replies: 361

Cheeki Rafiki loss report

Views: 57,495

Posted By leftbrainstuff

Re: Cheeki Rafiki loss report

Ultrasound is typically used for one side access and large area surveys. Its good for void inspection. As is a knockometer.

Xray will give a more detailed through thickness image but requires...

Forum: Seamanship & Boat Handling

05-05-2015, 08:09

Replies: 361

Cheeki Rafiki loss report

Views: 57,495

Posted By leftbrainstuff

Re: Cheeki Rafiki loss report

A bolt on keel is a great manufacturing cost optimisation but a dreadful engineering solution. It concentrates load on two mission critical components. The keel and the hull. Feeding those attachment...

Forum: Seamanship & Boat Handling

30-04-2015, 08:31

Replies: 361

Cheeki Rafiki loss report

Views: 57,495

Posted By leftbrainstuff

Re: Cheeki Rafiki loss report

Another sobering report.

One of the oft ignored parameters in formal engineering risk analyses is the detectability of a risk. FMECA analyses also consider the criticality of failure modes. I use...

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