Why HMS Hood did not carry Britain to Washington

Why did Britain not send HMS Hood to the United States for the Washington treaty negotiations?

Hood was not yet sufficiently worked up for a prestige deployment, and arriving in the world's largest warship could appear diplomatically aggressive.

A prestige visit demanded flawless drills, machinery, appearance, and training because every detail would be observed. Hood was still too new to have reached that fully worked-up standard when the Washington voyage had to be prepared. Sending an unpolished flagship would weaken the display rather than strengthen British prestige. Arriving at an arms-limitation conference in the world's largest warship could also make the delegation's diplomatic posture look needlessly aggressive.