The deckie went out and bought some new bungs for our boat and on the next trip the water p****ssed through the bung (must be her fault, not mine).
On checking found out there are two types of bungs, a fine thread and wide thread. I have had a few boats in my time and obviously showing my naivety, I never realised there was such a thing as a fine thread bung.
Why the two different thread patterns and for what purpose please.
Cheers
Pete