I'm looking to buy my first narrow boat and, having read up for weeks/months and searched many websites this seems to be one of the fundamental variables which has strong pros and cons.
We've had many hols on French canal boats which, as you probably know, pump straight out to the canal/river. Because our new boat will be anything but new, if our final selection is 20 years + and has a tank, my very strong fear of a burst or leaking sewage tank is a total no-no for both my wife and I.
Thanks for contact.
j