What is the correct first step to leave your ship when in uniform?

The correct first step when leaving your ship in uniform is to salute the ensign if it is flying. This demonstrates respect for the nation's flag and the symbolism it represents. By saluting the ensign, you acknowledge the authority and values embodied by the flag, adhering to naval customs and traditions.

While the other options may be relevant to military protocol, they do not represent the correct order of actions. Presenting your ID to the Officer of the Deck (OOD) is typically done during a check-in or check-out process, but not as the first step. Stepping onto the quarterdeck usually comes after the proper salutation to the ensign. Requesting permission to go ashore is an important part of military procedures but typically occurs after acknowledging the ensign. Thus, saluting the ensign first is an essential aspect of honoring naval traditions and is the appropriate initial action when departing from the ship in uniform.