You remove your cover in all of the following situations except when entering:

• A. Jewish divine services
• B. Official business aboard ship
• C. A formal meeting with officers
• D. The Quarterdeck

Answer: (A)

The key idea is headgear etiquette aboard a ship and how religious practice can override the usual rule. In most indoor or formal ship spaces, you remove your cover to show respect and follow decorum. Entering official business aboard ship, a formal meeting with officers, or the Quarterdeck all call for taking your hat off as you step in.

However, Jewish divine services have a long-standing custom of head covering as a sign of reverence. Because of that tradition, you do not remove your cover when entering such a service. You keep your hat on to honor the religious practice, which is why this is the exception.