[bjt2n3904]

Perhaps a little poor taste with the tone, but this is a great point. We're all talking about how poorly we handle units. Nm has two meanings, but I didn't even think about it until this comment.

[jzwinck]

Nm is Newton meters. You're looking for NM (Nautical Miles). Common mistake.

Similarly, kt means knots as in speed, but the very same kt also means kilotonnes as in dynamite.

[fwip]

Good point; I should have been more careful with my wording.