Barge vs Narrowboat

Some people insist on calling Narrowboats.. Barges.
Maybe it's a London, or a Thames thing.


Old Chap: This barge you're on, Where can I hire myself one?
Me: Err.. You can hire them from Penton Hook Marina, I think. But, (pointing at Baglady) that's a barge. This is technically a 'narrowboat'.
Old Chap: I know what I mean. Are they difficult to drive?
Me: Err.. I think you steer them. But, No. Not really.
Old Chap: Cheers.

Narrowboat wiki entry.
Barge wiki entry.