What does the 9th General Order instruct a sentry to do in cases not covered by instructions?

The 9th General Order directs a sentry to call the officer of the deck in situations not specifically covered by their instructions. This ensures that any unusual or unclear circumstances are handled by a person with greater authority who is responsible for the overall security and operational integrity of the area. By doing so, the sentry is able to rely on the officer of the deck's experience and judgment, ensuring that any necessary actions are taken appropriately. This order is vital in maintaining communication and command structure within the duty environment, as it allows for issues to be escalated and managed efficiently without the sentry making unilateral decisions that could compromise security.