Or about 3 double-decker buses for the length of 171 footy pitches.

That's not dimensionally correct! Double-decker bus is a unit of length, and footy pitch is too prosaic to be an approved unit: https://www.theregister.com/bootnotes/2026/05/31/the-reg-onl...

It's a shame it's not about area then at least we could agree on Wales as a unit.

It's not too prosaic, it's just too imprecise. There is no standard size, and some regulations even allow a range of sizes.

https://en.wikipedia.org/wiki/Football_pitch

I don't think that's relevant for Register units. Clearly there's a standard brontosaurus somewhere, for instance, otherwise how could we have the conversion table? However, sorry, I was wrong about the football pitch, at least as a unit of area, equal to 194.89nWa per the original article: https://www.theregister.com/offbeat/2007/08/24/so-whats-the-...

You're not wrong! Personally, I like to use penguin as a measure of height. Everybody knows how big a penguin is, right? It's pretty standard.

to clarify for those of a nautical bent - that's about half a blue whale for about 4/5ths of a dozen nautical miles