MtB

And now I think Will Prowse must have been reading this thread. YouTube has just pushed at me a new video of Will's making the exact same point!!

Point of Order M'Lud... Being a three cylinder tractor engine it doesn't go "put put", it goes "boppety-boppety-boppety-boppety"...

Cobblers!

You could have said that in the first place!!

Yes. The interior was stripped out and the hull pulled in to 7ft and about 1/2 an inch. New footings and baseplate constructed and the interior put back in. Also the rather tired old Gleniffer twin removed for renovation and a hot bulb semi-diesel installed.

Or my boat did, rather than me

Yep!

Are you claiming this boat sunk?!!!! Preventative maintenance seems to stop it easily as your link shows, but crack on with your scare-mongering if it makes you happy. Expect some push-back though!

I don't think there is. Its all pretty crude and basic engineering. If you can accompany their suggested surveyor and watch him/her take ultrasound readings and see the results on the screen, you can be reasonably sure of the thicknesses at the points sampled. Beware though, I have a sample cut from a corroded baseplate replaced on one of mine which varies from about 8mm down to 2mm over a distance of about 100mm!!

Yes definitely, with no context given. 30,000 boats on the cut. How many boats have sunk? None so far as we know.

And with my BD3 (a very similar engine) I was always diving down to shut the engine room door when it annoyingly swung open from time to time, to keep the noise down at the helm. And that was with a separate engine room forward of the back cabin! I eventually fixed the latch

Its no skin off my nose if you don't believe me. I only commented as it seemed a shame to read someone lusting after a mirage. Crack on and buy it then if you think a JD3 at your feet makes a "soothing, evocative put put" noise!

They are a LOT louder under your feet than from the bank!!! I see its a Beta JD3. A few people here have them and might like to comment on how quiet they are, when stood next to.

Well I never! All the same, despite Alan's expert scare mongering MIC is not a widspread problem on the cut causing thousands of boats to suddenly corrode through and sink. It is a rare occurance and the statistics suggest your boat bay well not fall victim to the slurry spraying. Are there any other boats on the mooring and did the frmer slurry-spray last year too? Have they all subsequently sunk from MIC? Just putting the opposite case to Alan's.

Open to hear, too. The NOISE as you cruise!! It is a totally different experience to steer a boat with an engine room forward of the back cabin.

Eh? The engine is in the back cabin under your feet as you cruise. Yuck!!

Highly unlikely I'd have thought. (Unless the cows have rusticles.) But I know nothing about this really, and I doubt anyone else here does either! I suggest you ask chatgpt if MIC is caused by cow slurry.

Broadly yes your insurance covers you, but you won't get to sue the surveyor and win if s/he fails to notice the hull is a colander. Their T&Cs will say something like "It wasn't my fault if I didn't notice it, so tough luck". Depends why you want a survey. What is actually happening is the marina you mention wants to sell boats. Buyers like the boats and say they want a survey, and naturally ask the marina if they know one. The marina, wanting to speed the sale will have a list of surveyors for you to call, so you call one. They will probably do a completely honest survey but once the calls (and the survey fees) begin to roll in, they begin to feel a subtle pressure to maybe not look too hard at any areas that might make the buyer think again about buying the boat, just in case they marina begins to notice and stops handing out their name. So if you want a 'warts and all' brutally honest survey it might be better get someone not on the marina list. If you just want it so the boat can get insurance and you understand this pressure on the marina surveyor, its fine to use them. Just my worthless opinion, you understand...

Oops, posting in too much of a hurry!!

Nice MGB engine there in the background!

I think that was Tommy Cooper one-liner originally... "I went out to buy a camouflage jacket... I could find one" <Big grin as he looked around the audience to see who didn't get it!>

I guess I was hoping the OP would mention loosening the injector bypass valves. If that stopped it, then we can 100% rule out the engine drinking its own oil.

Off at a tangent but I've an idea the engine in those is likely to be pretty powerful, something like a Saab or even an HRW2 in the older ones. I don't know for sure though.

So how DID you stop it? This info might help narrow down the possible cause.

IIRC CRT have a whole string of requirements including commercial level of BSC, a mooring with parking + waste disposal, and written permission from the mooring owner to run the rental boat from the mooring. I'm pretty sure there is a section on the CRT website covering all this.