Prop Shaft Question

[Lakesailor]

Whilst walking around my boat at low tide I noticed that the prop and shaft look fine from one side but that a shiny patch is showing from the other side. Is this a sign of a problem?

 

[sailorman]

She is obviously a racing boat & that is quite normal, it lust looks like sone of the protective coating has come adrift on the shaft, this will soon "self repair" om re emersion

 

[alahol2]

If my sterngear looked like that I would definitely be worried. That denuded patch is likely to severely affect the balance of the propshaft and could cause the P bracket to be shaken loose. Only solution I can think, although counterintuitive, is to try to remove an equal portion of the coating on the opposite side of the shaft. I would then gently abrade the 'shiny' bits of shaft to, hopefully, give some key for the new coating to take hold. Good luck.

 

[Lakesailor]

I'm getting worried about these patches of bare material.
On the port side of the boat there is another which I am sure will affect the speed on starboard tack.

 

[Bilgediver]

I'm getting worried about these patches of bare material.
On the port side of the boat there is another which I am sure will affect the speed on starboard tack.

Seems that the barnacales are catching a deadly virus called Nostickumitus. This could be due to immersion in fresh water????

 

[alahol2]

This is starting to look like an attack by a surveyor. These, not uncommon, creatures tend to choose a particular vessel then proceed to scrape small patches of coating from different points on the hull. Some say they are in search of moisture (but cosidering it's a boat they are nibbling at, why they need to burrow for moisture is a puzzle) others that they are looking for polyester mites (which I suppose is more likely). Whatever the reason for the scraping, you are left with the tricky job of making good. I would tend to go with Sailorman's solution and hope it self repairs, though it may take a while with that amount of damage.






Dear God, what am I doing?????

 

[ianj99]

Teach ya for using Aldi's Antifouling.

 

[Lakesailor]

Thank Goodness for that.
I was thinking it was a failed epoxy coating.

At least I've got it securely moored.

 

[rib]

looks like your keel has split in half too,id be more concerned about that defect

 

[Neil_Y]

Is that an anchor thread in the picture? or did you use rope?

 

[Didi]

Looks like Ravenglass on the left ...

 

[sailorman]

Looks like Ravenglass on the left ...

theres always one isnt there .
this is serious man this chap wants answers fer godsake

 

[Didi]

Oh sorry .. nah no problem ... just slap another coat of copperepoxygunge (c) straight on top .. fair it off a bit (on second thoughts don't bother) .. job's a goodun