Chief of the boat

&nbsp The Chief of the Boat (or COB for short) is the most senior non-commissioned officer onboard a starship, advising the commanding officer and executive officer on the matters of both ship and crew. The COB tends to hold the rank of master chief petty officer or senior chief petty officer. Though technically an outdated title, the position of chief of the boat would still be used in Starfleet in accordance to and respect of ancient earth naval tradition.