Which condition indicates that the ship is expecting an attack?

The condition that indicates a ship is expecting an attack is referred to as "Zebra." This status means that all battle stations are manned and that the ship is prepared for potential combat situations. Under Zebra conditions, the ship takes extensive measures to enhance its damage control readiness, including securing all access points and ensuring that firefighting and damage control equipment are readily available. This heightened readiness is essential to prevent damage and to protect the crew and ship's assets when an attack is imminent.

In maritime operations, specific conditions—X-ray, Yoke, and Willy—also exist, but they serve different purposes. X-ray is a readiness condition that allows for more access to spaces but still implements significant precautions, generally during periods of lower threat. Yoke represents a condition that maintains a balance between readiness and operational efficiency, preparing the ship for a possible encounter with lesser restrictions than Zebra. Willy is not a recognized condition related to damage control and naval readiness, further distinguishing Zebra as the correct choice in this scenario.