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Search took 0.00 seconds. Search: Posts Made By: transmitterdan
Forum: Seamanship & Boat Handling 07-10-2016, 09:55
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

I agree with you. But if the prosecutors feel that someone was paid (enticed) to go to sea in a boat known not to be fit for purpose (whether ill maintained, poorly designed, etc.) then died as a...
Forum: Seamanship & Boat Handling 07-10-2016, 08:56
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

Polux,

Who gets sued in a case like this has more to do with legal issues such as jurisdiction and time limitations than with technical design matters. And the first parties to be sued will have...
Forum: Seamanship & Boat Handling 27-06-2015, 06:13
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

My opinion is the existence of an ISO standard is one root problem. Unless the ISO standard mandates adequate margins of safety these things will keep happening. Because Bene met the standard at the...
Forum: Seamanship & Boat Handling 10-06-2015, 08:14
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

If you are worried about the nuts backing off accidentally there is something made by Lok-Mor called an Anco PN-LOC that can be had in stainless. They will not back up by themselves no matter what...
Forum: Seamanship & Boat Handling 15-05-2015, 06:40
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

Moore's law does not apply to sailboats....thank the deities of the sea for that. If you want fast paced improvement in design resulting in lower and lower costs for throwaway products buy a smart...
Forum: Seamanship & Boat Handling 13-05-2015, 12:35
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

Paolo,

The problem with this design is easy for anyone with eyes to see. The backing plates are at least an order of magnitude too small. They have no rigidity and concentrate too much pressure on...
Forum: Seamanship & Boat Handling 12-05-2015, 11:01
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

When people die it is not an inconvenience. It is unbelievable how hard you are hanging on to this issue. The design is bad, defective, not fit for purpose or whatever euphemism you like. But calling...
Forum: Seamanship & Boat Handling 12-05-2015, 10:31
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

Paolo,

Please do a google search for the number of keels and crew lost on Perry designed boats.
Forum: Seamanship & Boat Handling 10-05-2015, 16:13
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

Was this passage/boat insured? If so the insurance investigation may reveal much. And they won't be hindered by the charter of the MAIB. MAIB report cannot assign blame or causality as part of its...
Forum: Seamanship & Boat Handling 10-05-2015, 06:24
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

No matter what you may read in this thread it is impossible for inspection to correct a design defect. The best inspection can do is take the boat out of service if failure is found. There is no...
Forum: Seamanship & Boat Handling 09-05-2015, 14:29
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

The report does say that boat should not have been making that trip because it was not current with its regulatory rating. They used an ambiguous loophole to get around the rules to save some money....
Forum: Seamanship & Boat Handling 09-05-2015, 12:16
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

Paolo,

The report says it will not assign blame therefore it cannot call out any responsible party. It can only make recommendations which it does.

But if after reading the report one cannot...
Forum: Seamanship & Boat Handling 09-05-2015, 09:31
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

Much of what your wrote I disagree with. But I will stick to this last sentence. No one is saying bolted keels are a bad idea. Quite the opposite. Bolted fin keels are a great thing in terms of speed...
Forum: Seamanship & Boat Handling 07-05-2015, 10:11
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

Some of us seem to still be missing the point. The issue the MAIB report highlights is that this type boat can be damaged by activities that most sailors do not expect would damage an ocean going...
Forum: Seamanship & Boat Handling 07-05-2015, 07:51
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

Paolo,

I see the advantages of such a design. I also see the disadvantages. In some cases the advantages of reducing costs and improved sailing performance are not enough to justify the additional...
Forum: Seamanship & Boat Handling 07-05-2015, 07:34
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

Paolo,

The last bit was a tongue in cheek comment being made by David. I feel sure he well knows the real situation.

The MAIB report is saying that many events (light grounding, pounding up...
Forum: Seamanship & Boat Handling 05-05-2015, 04:50
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

This tragedy did not happen on a bespoke boat built for one knowledgeable owner. It happened in a very common scenario of charter. These boats are built en masse to a price point for that market. The...
Forum: Seamanship & Boat Handling 03-05-2015, 16:02
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

What people want is not possible. They want a boat that performs well and also will save their a$$ when they screw up (weather/grounding/too much sail/etc.). And they want a boat that costs 1/2 what...
Forum: Seamanship & Boat Handling 03-05-2015, 06:19
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

I don't think any keel should be in danger if 1 or 2 bolts are loose. I also don't think any boat is designed that way. At least not a recreational cruiser. Racing keels are now massively over...
Forum: Seamanship & Boat Handling 02-05-2015, 11:53
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

So if the crew has a complete history of every repair and each repair was sanctioned by the designer and inspected by one of a handful of knowledgeable surveyors with the correct (& expensive) tools...
Forum: Seamanship & Boat Handling 02-05-2015, 09:09
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

I don't know how he can say someone was negligent or if he knows who it is. But his opinion as to the proximate cause of the failure seems to be based solely on the examination of the picture. The...
Forum: Seamanship & Boat Handling 30-04-2015, 13:35
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

One other thing is obliquely mentioned in the MAIB report. The CR master searched over the course of many hours for a leak and apparently never considered that the water could be coming through the...
Forum: Seamanship & Boat Handling 30-04-2015, 13:27
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

It isn't practical to design a structure such as a boat hull so that it maintains its integrity even though it has suffered massive structural failure. Nor is it necessary. The trick is to design it...
Forum: Seamanship & Boat Handling 30-04-2015, 09:40
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

Polux,

The Bavaria C-channel load spreaders are much better because they spread the horizontal loading out over a wider area of the hull. Still the main damage that happens in a grounding is...
Forum: Seamanship & Boat Handling 30-04-2015, 07:17
Replies: 361
Views: 57,495
Posted By transmitterdan
Re: Cheeki Rafiki loss report

This was not discussed by the MAIB report but if we are allowed to speculate as they did then I think there is another possible issue. It is well known that compressing FRP laminates with bolts and...
Showing results 1 to 25 of 26
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