Which of the following describes a primary responsibility of the ship's master in ensuring maritime security?

The primary responsibility of the ship's master in ensuring maritime security is to ensure adherence to the security procedures and instructions. This responsibility encompasses the overall safety and security of the vessel, the crew, passengers, and cargo. The ship's master is tasked with implementing and enforcing policies that protect against potential threats, such as piracy, terrorism, and other security breaches. This includes ensuring that all crew members understand and follow established security protocols, conducting security drills, and coordinating with port authorities and security personnel.

In the role of ensuring maritime security, the master must maintain a proactive approach to identifying and mitigating risks. This involves regular training and updates to security practices based on evolving threats and compliance with international regulations like the ISPS Code (International Ship and Port Facility Security Code). By fulfilling this duty, the ship's master plays a critical role in maintaining a secure maritime environment.

The other responsibilities mentioned—such as maintaining ship cleanliness, overseeing engineering repairs, and collecting passenger feedback—are important to the overall operation of the vessel but do not specifically pertain to the core security functions that the ship's master is expected to prioritize in their duties.