Commander Birch was a trifle uneasy when he found there was more than a popple on the sea; it was, in fact, distinctly choppy.

It is, in essence, a highly conservative book, although it puts forward no propositions, and does not seem unfairminded in its descriptions of British life in the 1960s.

A deaf murmur through the squadron went.

Why do we need to know what Euler angles are? Because we use them. Many commercial 3D computer animation packages that are available today use Euler angles to describe and change orientations of objects.