How should propeller “leakage / water seepage at the shaft seal” be addressed?

zke61553

Recruit
Joined
Aug 29, 2025
Messages
3
When I inspected the stern yesterday, I found that water was constantly seeping from the shaft seal of the propeller (the gap where the propeller connects to the hull). The amount was not large but it kept dripping. It would also leak when the ship was stationary. Is it that the shaft seal is worn out or is there a problem with the shaft sleeve of the propeller? Should this situation be repaired immediately? Will it get worse and worse?
 

dingbat

Supreme Mariner
Joined
Nov 20, 2001
Messages
16,650
Is it that the shaft seal is worn out or is there a problem with the shaft sleeve of the propeller? Should this situation be repaired immediately? Will it get worse and worse?
Could be either.
You will not know until you tear it down.

It will get worse….question is, how long until failure
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
38,960
Is it packing in there?----That can be adjusted to get the proper amount of leakage.----A mechanical seal should be replaced.----Pictures of your set up ?
 

Grub54891

Admiral
Joined
Jun 17, 2012
Messages
6,294
I have to assume it’s an inboard. Where the shaft goes through the hull, that’s called a stuffing box, or some are called a drip less depending on the style that’s installed. Yes, some pictures will help with the diagnosis.
 
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