Thanks, guys. Great stuff.

So, first I should try tightening it and if that doesn't stop the leak I'll need to re-pack the gland - probably at my next haul-out as I've never done it before.

(Also, note to self. Be sure your undies - and bilge - are clean before you post pics of them online. Thanks for the strong suggestion to tidy things up!)

Ed The Neglectful Boat Owner