Could Tufnell overrule the Hellenic king?

Could Admiral Tufnell overrule the Hellenic king on naval policy?

The king's practice was to ask for Tufnell's recommendations and support them wholeheartedly, treating him as his chief naval adviser.

The king had invited the British mission partly as a guarantee of British support. He therefore sought to avoid disputes with Tufnell over naval policy. His practice was to ask what the admiral recommended and then support it wholeheartedly. The king treated Tufnell as his chief naval adviser.