Network architecture (ocean engineering) is the comprehensive structural design and organizational framework defining the components, connectivity, protocols, and operational principles of networked systems deployed within or for the ocean environment. This concept specifically addresses the unique challenges and requirements of marine applications, such as underwater sensing, communication, navigation, and resource management. It encompasses the strategic arrangement and interaction of diverse elements including underwater sensors, communication nodes (acoustic, optical, RF), data processing units, and platforms (e.g., buoys, AUVs). The investigation of network architecture in this domain is critical for optimizing system performance, ensuring reliability and scalability in challenging conditions, and supporting the development of sustainable marine technologies and operations.