Introduction and intelligence of maritime patrol ship

Ii. Introduction of maritime patrol ships

China is A major maritime and shipping country, a Category A member of the IMO, and plays an important role in the peaceful development and utilization of Marine resources and the implementation of international conventions. However, due to historical reasons, China's water traffic safety supervision and management capacity has not adapted to the needs of economic development, and the status of China's maritime power and shipping power is extremely inconsistent. In 2001, the Outline of China's Maritime Development proposed that by 2005, China's maritime industry would bring international shipping routes and maritime facilities within 1,000 nautical miles into the scope of supervision, and that the emergency arrival time within 50 nautical miles of important trunk routes and near important ports should be no more than three hours. The requirement of realizing this goal exists in many aspects, one of the important reasons is the modern maritime patrol ship with long distance sailing ability.

Maritime patrol ships play a key role in maritime patrol law enforcement and many other aspects, and their tasks mainly include:

1, the implementation of maritime patrol, supervision, warning, escort, traffic facilitation

2. Law enforcement and forensics: handling and investigating all necessary means of transport for maritime accidents and maintaining water order

3, emergency search and rescue: undertake water search and rescue organizations and maritime emergency duty work, coordination and guidance of the relevant work.

The photoelectric tracking and forensics system that should be equipped on maritime patrol ships can well realize maritime forensics, and effectively carry out activities such as traffic accident investigation and treatment, search and water pollution detection at sea. Evidence at sea is not as rigid as evidence on land, and can change or even disappear with time and changes in ocean currents and wind direction. Timely and accurate maritime evidence is of Paramount importance. Therefore, the system can be used in maritime patrol ships.

The maritime patrol ship also has a special cabin - the multi-function Hall. This room is similar to a conference room, except that the kiosk has a large display screen and an operating desk where computers and various electronic devices are installed. This hall is not only used for convening emergency meetings, but also through the Ethernet network system, the field headquarters can use special frequency points or even high frequency wireless calls to communicate with fisheries administration and customs ships. It is also possible to access the national maritime network and even the International Maritime Organization through the maritime satellite system on board.

Maritime patrol ships can guarantee the security of our territorial waters and help our country achieve the ambitious goal of maritime transparency. And its more intelligent is the development trend of maritime patrol ships, but also the direction we should work hard.

Second, the intelligence of maritime patrol ships

Based on the characteristics of maritime patrol ship and the existing technical basis, it is necessary and feasible to realize the limited intelligence of maritime patrol ship. The task and function of maritime patrol ship has its particularity, which is different from other kinds of ship. Its main types of tasks include patrol escort, regulatory law enforcement, search and rescue command, pollution prevention and control operations, and safeguarding national security and interests. [5] According to the regulatory objectives set out in the National Water Traffic Safety and Rescue System Layout Regulations, patrol vessels must be able to reach any waters within 200 nmile offshore within 12h, and key waters within 50nmile offshore within 90 minutes. This task requires the ship's speed to put forward obvious requirements, but considering the fuel saving, the ship's daily cruise is low-speed sailing, only when needed to rapidly improve the speed, so the ship is required to have a low fuel consumption rate at medium and low speed and high speed. At the same time, considering that most of the major maritime disasters occur in bad sea conditions, ships are required to have excellent maneuverability and seaworthiness, large endurance and structural strength, and advanced communication command and rescue equipment. Table 1 summarizes the correlation between the main tasks of maritime performance and the main performance of ships, in which the survivability of ships mainly refers to the stability and anti-sinking of ships [6].

In view of the above regulations and requirements for maritime patrol ships, this paper will discuss the possible measures and ideas for maritime patrol ships in the aspects of communication and identification, safety and automatic navigation and power.

1. Communication and identification

Communication between ships is mainly through satellite communication and ground communication. As for communication between maritime patrol fleets, mobile AD hoc network technology can be considered. AD hoc network is a multi-hop temporary autonomous system composed of a group of mobile nodes with a wireless receiver. It is mainly used in environments without network infrastructure support or where the existing network cannot meet the requirements such as mobility. The AD hoc network generally adopts the on-demand routing policy. On-demand routing considers that in the dynamic changing AD hoc environment, it is not necessary to maintain routes to other nodes. On-demand route discovery is performed only when the nodes that do not go to the AD hoc network travel, and the topology and routing table are established on demand. Through the above deployment, real-time data exchange between the formation can be realized.