As an important component of the digitization and networking of ship systems, the design and application of the ship information network system have significant practical significance. In order to safely and efficiently utilize the network resources of the ship information network system and achieve ship-wide data acquisition, analysis, and application, and on the basis of fully considering the current research difficulties in the field of ship information network systems, this paper conducts relatively in-depth research on the control modes and control methods of the ship information network system, and thereby proposes in a standardized manner a framework for the hierarchical/collaborative control system of the ship information network. Furthermore, the process and methods of its information transmission are effectively designed. Under the premise of fully considering the connectivity, reachability, and observability of the ship information network system, the principles for setting information within the data transmission sequences of the ship information network system are established, and accordingly, transmission protocols for actuator and sensor data information within the ship information network system are proposed. Furthermore, this paper conducts relatively pioneering research on the integrity and confidentiality of network information transmission under the hierarchical/collaborative control system mode of the ship information network, and proposes an intrusion detection mechanism for signal attacks on the ship information network system and a method for setting the opacity of task process implementation. The entire research process takes the core component of the ship information network system, namely the distributed control unit, as its object, and successively carries out the design and research of its hierarchical/collaborative control strategy, information transmission protocol, and transmission methods that take into account both integrity and confidentiality. First, this paper studies the architecture of the ship information network system and uses it as the basis for analyzing the control structure of the ship information network system. Furthermore, on the basis of the above analysis, this paper systematically analyzes the flow of the hierarchical/collaborative control system of the ship information network under manual and remote operating conditions, thereby completing the analysis of the hierarchical/collaborative control system mode of the ship information network. At the same time, combined with the characteristics of the hierarchical/collaborative control system of the ship information network, this paper proposes a design method for the hierarchical/collaborative control strategy of distributed control units based on the principle of effect superposition, and takes the ship heading/roll stabilization composite task as an example to simulate and verify the effectiveness of the design method. Second, this paper studies the information transmission protocol under the hierarchical/collaborative control system mode of the ship information network, proposes methods for analyzing the connectivity, observability, and reachability of the ship information network system under communication resource constraints, and uses these as the basis for designing the length of each data transmission sequence in the ship information network system, thereby proposing transmission principles for actuator and sensor data information in the ship information network system. According to differences in physical characteristics, the actuators within the ship information network system are divided into "stubborn" actuators and "compliant" actuators, and this serves as the selection criterion for the content of actuator data transmission sequences. Furthermore, according to the real-time data value of sensors in the ship information network system, this paper proposes a dual numerical index evaluation method for sensors based on the sensor variation index and difference index, and according to this method, the corresponding sensor information is added to the corresponding data transmission sequences of the ship information network system. The above methods, while shortening the length of data transmission sequences, ensure the objective requirements of the system for data information acquisition, processing, and application, thereby optimizing system resources and improving system performance. Then, research is conducted on information integrity transmission technology under the hierarchical/collaborative control system mode of the ship information network. Aiming at the closedness and vulnerability of the ship information network system, a corresponding intrusion detection mechanism is proposed. Aiming at signal attacks, this paper uniformly plans the associated data information within the ship information network system according to the industrial model state language, and accordingly proposes an intrusion detection method based on critical states, and provides the corresponding analysis algorithm. To verify the attack recognition effect of the intrusion detection mechanism, this paper takes the heading/roll collaborative control task as an example to simulate and verify the effectiveness of the described intrusion detection mechanism. The results show that the intrusion detection method can effectively detect abnormal data within the collaborative control system. Finally, this paper studies information confidentiality transmission technology under the hierarchical/collaborative control system mode of the ship information network. Aiming at the communication methods of each distributed control unit in the ship information network system, this paper analyzes the possibility of disclosure of task processes in the ship information network system, and takes opacity as the research basis for the confidentiality of the ship information network system. For this purpose, this paper proposes an implementation opacity mechanism for the ship information network system based on a double-layer insertion function. By calculating the corresponding safety-ensuring insertion function f_(IS) and admissibility insertion function f_(IA), the modification of the command output of each distributed control unit is completed, thereby realizing the confidentiality setting of key task states in the ship information network system, and thus ensuring the protection of key information in the process of the hierarchical/collaborative control system of the ship information network
