To think Agincourt is a good name for a submarine

[Thegoatliesdownonbroadway]

We won at Agincourt against great odds .... whereas Achilles had a duff heal. I would rather serve in sub called "Agincourt" than "Achilles". Though at my age with my sinus issues, I doubt they would have me.

Achilles did not have a duff heal.
He was a great warrior with virtual immortality gained from having been dipped into the river Styx, with the exception of a mortal heel

A Greek warrior having been dipped underwater is quite relevant to a submarine, and has more relevance than one battle heralded to the skills of archers

However the navy regularly renames its vessels.
A politician who was Defence Secretary for a few months is entitled to their opinion, but it’s not up to him