What are the three levels of security defined by the ISPS Code?

The correct answer identifies the three levels of security as Security Level 1, Security Level 2, and Security Level 3 as defined by the International Ship and Port Facility Security (ISPS) Code. This framework is designed to enhance the security of ships and port facilities globally, and each level corresponds to a specific threat level that necessitates varying security measures.

Security Level 1 is the minimum level of security maintained at all times and involves routine preventive measures. Security Level 2 is applied when there is a heightened risk of security threats, requiring additional vigilance and operational measures. Finally, Security Level 3 is put into place when there is a serious and imminent threat that requires extraordinary measures to ensure safety and security.

Understanding these levels is essential for ensuring that maritime operations can adapt to changing threat environments and implement appropriate security protocols. This structured approach enables vessels and port facilities to communicate effectively and respond to potential threats correspondingly. Other answer choices, while potentially descriptive, do not align with the terminology and framework established by the ISPS Code.