A single nod, more of acknowledgement than agreement.

'Your options were rather limited at the time,' he says. 'And so you took the decision and accepted the consequences. From what I know of you, Mister Norrington, you are quite adept at doing so -- and in many respects it is a worthy character trait. But nevertheless, even if you accept the consequences of your actions, you have no guarantee that they will be what you expect.'