Earth bonding survey comment

[jakew009]

This was written in a boat survey. I checked on the surveyor's website and the same thing is written in their 'example' survey on the website.

Can someone tell me how bonding your prop to the railings will reduce corrosion?

 

[Tranona]

Difficult to know where to start - but basically absolute nonsense

 

[Kwik Decision]

It won't.

Vyv Cox is the forum expert on all things metallurgical, and his website is a wealth of useful information:
Metallurgy

He'll hopefully be along to explain why what your surveyor has written is rubbish.

 

[PaulRainbow]

As above, absolute rubbish.

 

[VicS]

Difficult to know where to start - but basically absolute nonsense

But easy to know where to stop.

When I see an expression like " 12 volts of current " I read no further.

 

[vyv_cox]

Total nonsense. Bonding for corrosion protection makes no sense. It is impossible for every underwater component: seacocks, prop, P-bracket etc., to be in line of sight of each other. Including above-water parts makes considerably less sense.

 

[penberth3]

As above, absolute rubbish.

Typical waffle that pads out a report to justify the large fee.

 

[ylop]

If it’s any help my surveyor included no such badly written cut and paste waffle, nor did any of the three previous surveys included in the files of info that came with the boat. As far as I am aware there is no electrical connection between my prop (or sea cocks) and my stantions/pushpit etc. there is no sign of galvanic corrosion on any of them.

You could ask him to explain what action is recommended, or what action YDSA recommend in this situation! I guess it’s difficult to ask for your money back for waffling nonsense when it’s in the sample version on his website so you could see what you were likely to get!

 

[KevinV]

In fairness, that kind of thinking was quite common 25 years ago (though I didn't understand it then either) - you can hardly expect a chap to update his template too often!

 

[Plum]

This was written in a boat survey. I checked on the surveyor's website and the same thing is written in their 'example' survey on the website.

Can someone tell me how bonding your prop to the railings will reduce corrosion?

View attachment 200320

Would you please name your surveyor or a link to their website. Thanks

Edit; I assume it is | European Marine Services Ltd John Clabburn "Member IIMS, YBDSA, Academy of Experts"

 

[rogerthebodger]

I total agree with other posters and in my view, it was a means of selling more anodes by the supplier of anode

I have a steel boat and skin fittings are stainless steel and isolated from the hull so no galvanic corrosion no current can flow

 

[geem]

It's no wonder surveyors get a bad reputation. If they know nothing about this one subject, how can we be confident they know anything about any aspect of surveying.
I had a survey on my boat when I first bought it. There were 3 things the surveyor got wrong. One of them was describing the autopilot installation as well installed. It wasn't and it failed on our 400nm trip home. I proved to the surveyor that the installation was lousy. We argued for a bit then I asked for my money back. He said take me to court so I said OK, I will. My brother in law and sister in laws were both barristers. Once I told him that he refunded my money. This was a YDSA surveyor. Never again.

 

[jwilson]

Would you please name your surveyor or a link to their website. Thanks

Edit; I assume it is | European Marine Services Ltd John Clabburn "Member IIMS, YBDSA, Academy of Experts"

I note this surveyor's website is partly plagiarising my own 'Osmosis' and blistering of yacht hulls - Yachtsnet Ltd. page. To be fair some AI bots are also doing so. Maybe he got it from AI.....

I do not know enough to comment on bonding ALL metalwork such as deck fittings, but even bonding underwater metalwork on GRP boats such as seacocks and propshaft etc. is now regarded as pointless.

 

[SimonX]

Only true if your boat is permanently submerged.

 

[vyv_cox]

Only true if your boat is permanently submerged.

Not even true then. How can a propeller be in line of sight with a pulpit? Never mind the distance involved.

 

[Refueler]

It's no wonder surveyors get a bad reputation. If they know nothing about this one subject, how can we be confident they know anything about any aspect of surveying.
I had a survey on my boat when I first bought it. There were 3 things the surveyor got wrong. One of them was describing the autopilot installation as well installed. It wasn't and it failed on our 400nm trip home. I proved to the surveyor that the installation was lousy. We argued for a bit then I asked for my money back. He said take me to court so I said OK, I will. My brother in law and sister in laws were both barristers. Once I told him that he refunded my money. This was a YDSA surveyor. Never again.

When I was conducting Surveys in UK ... I was asked to join the YBDSA ... I received their paperwork and after reading the 'Rules and Guidelines incl Fee structure' - promptly threw it all in the bin.

Am I the only one - actually I know I'm not !! other 'independent Surveyors' I knew commented on it as I did .... note that the YBDSA - its full and original abbreviated title .. is often divided up into its Broker ... Designer ... Surveyor parts - despite thae fact - they are one Association.

I have had run-ins with a couple of YBDSA Surveyors ... one in particular - I advised the client to take legal action against .... she declined - but luckily she took mine and another Surveyors advice on the work the YBDSA Surveyor had listed.
One of them wrote a report based on Underwriters requirements to void my claim - having visited the damaged yacht without my knowledge, failed to survey corectly. When I identified the Surveyor and contacted him - Underwriters were informed in writing that report was in error and should be disregarded. My claim was then upheld as it should have been.

My advice to anyone ... do not be fooled by Letters after the name ... ask around as to who is recc'd ... who has been noted bad .. noted as good etc. AND most importantly - try to be there during the survey .. if not - in this day - insist on photos / video of any areas that Surveyor wants to highlight ..

 

[Bobc]

Yet again, the "establishment" recommends and provides experts, who turn out to be anuthing but...

Or maybe I'm just an old synic.

 

[Blueboatman]

I note this surveyor's website is partly plagiarising my own 'Osmosis' and blistering of yacht hulls - Yachtsnet Ltd. page. To be fair some AI bots are also doing so. Maybe he got it from AI.....

I do not know enough to comment on bonding ALL metalwork such as deck fittings, but even bonding underwater metalwork on GRP boats such as seacocks and propshaft etc. is now regarded as pointless.

That is the best article on the subject that I have read

 

[RunAgroundHard]

Yet again, the "establishment" recommends and provides experts, who turn out to be anuthing but...

Or maybe I'm just an old synic.

Of course you’re being a cynic. There are many good surveyors irrespective of trade association membership.

 

[Refueler]

Yet again, the "establishment" recommends and provides experts, who turn out to be anuthing but...

Or maybe I'm just an old synic.

The problem is that there is NO ACTUAL professional official examination / qualification to be a Surveyor. This - believe it or not - applies in the real shipping world as well. In the real shipping world - there are only a few specific items that call for Professional Qualifications ... Loadline ... Paint are two examples.

Yacht Survey outfits at best only have In-House guidelines ... I don't care what Mr XXXXX may have said about his 'membership' of any group - the fact is - it is unofficial In-House.

I know yards that have banned Surveyors from YBDSA and a few other groups ...