Probably a daft question

[bigray]

Ok so this is probably a daft question and I perhaps should know the answer but I have noticed on the stern of most Narrow Boats one of the mooring posts (can't think of the correct terminology) is slightly different from the other in that there appears to be some of nut head or special fitting on top. I just wondered what they are for?

[Daiboy]

Is that the diesel cap or breather

[Guest]

I'll guess breather for the diesel tank.

[Top cat]

On my boat it is the tank breather

 

TC

[bizzard]

And a rotten idea in my opinion, brass and could be busted off if a rope with a heavy load caught and snatched at it, or another boats stem post or something should happen to strike it. Plus the hollow dolly's fixing stud would be weakened.

Edited August 9, 2014 by bizzard

[Theo]

The post things to which you tie mooring lines are called "dollies".

 

N

[bigray]

The breather ideas makes perfect sense. Thanks for the replies/info.