Yesterday's papers carried a story about giant new container ships which have been ordered. Obviously an opportunity for a useful graphic. Well, a graphic, anyway, in the case of The Times.
The Guardian made a better fist of it, although much less ambitious.
The greater error, of course, would be to compare it with something much bigger - for example, this ship might be big, but it's nothing like the size of Wales (or Belgium, if you want to go metric). Odd thing is, I can't think of a unit of measurement that comes between a football pitch and Wales. The Isle of Wight, possibly.