How to install a Class A AIS system
How to install a Class A AIS system?
Installing a Class A AIS system on a vessel is a crucial step to ensure safety and compliance with maritime regulations. Class A AIS systems provide real-time vessel tracking and communication capabilities, allowing vessels to exchange vital data such as position, speed, and navigation status with other nearby vessels and shore stations.
Here are the steps to install a Class A AIS system on your vessel:
1. Choose the right Class A AIS system: Before purchasing a Class A AIS system, ensure that it is compliant with international standards and regulations such as SOLAS (Safety of Life at Sea) and is suitable for your vessel's size and type.
2. Install the AIS transceiver: The AIS transceiver is the main component of the Class A AIS system and is responsible for sending and receiving AIS data. Install the transceiver in a location that provides a clear line of sight to maximize signal strength.
3. Connect the AIS transceiver to the vessel's GPS and other navigation systems: To ensure accurate positioning and data transmission, connect the AIS transceiver to the vessel's GPS receiver and other relevant navigation systems.
4. Install the AIS antenna: The AIS antenna is used to transmit and receive AIS data signals. Install the AIS antenna at a suitable location on the vessel, such as the mast or superstructure, to ensure optimal signal reception.
VHF antenna selection and installation should pay attention to the following matters:
①. Omni-directional vertically VHF antenna should be selected.
②. AIS VHF antenna should be installed in a vertical position, in the horizontal plane should be as far away as possible from conductive objects, the distance is not less than 0.5m, as shown in the figure on the right. The antenna should not be close to large vertical objects, try to maintain a 360 ° field of view unobstructed, if possible should be placed in the highest possible position,and try to stay away from other antennas.
③. AIS VHF antenna should be installed directly above or below the original VHF radiotelephone antenna, and the vertical distance is at least greater than 3m, as shown in the figure on the right.
④. AIS VHF antenna should be as far away as possible from high-power emission sources, such as radar and other radio transmitting antennas, it is best to leave more than 3m, and avoid the radiation area. If installed in parallel with other VHF antennas, it needs to be at least 10m away from other VHF antennas as shown in the following figure.
⑤. The VHF antenna cable should be as short as possible to minimize signal loss. High-quality, low-loss coaxial cable suitable for the installation location should be used. The antenna cable should be installed in a separate signal alignment channel, and not less than 10cm away from the power line. cable joints pay attention to waterproof treatment.
Please pay attention to several points when choosing the location of GNSS antenna installation:
①. the chosen location should avoid radar, because radar wave radiation can damage or affect the reception of satellite signals;
②. There is no obstacle on the line of sight with the satellite. Obstacles on the line of sight (such as masts, etc.) will block signal reception or extend the satellite search time;
③. the higher the installation position, the better, on the one hand, to avoid obstruction, on the other hand, to prevent being splashed by seawater, stained with water to affect reception;
④. cable joints pay attention to waterproof treatment.
5. Power up the AIS system: Connect the AIS system to the vessel's power supply and turn on the system to ensure proper functionality. Follow the manufacturer's instructions for powering up the AIS system and configuring the settings.
6. Configure the AIS system: Set up the AIS system according to the manufacturer's instructions, including entering the vessel's MMSI number, callsign, and other relevant information. Configure the AIS system to transmit and receive data at the appropriate intervals.
7. Test the AIS system: Before setting sail, perform a thorough test of the AIS system to ensure that it is functioning correctly. Test the AIS transceiver's ability to send and receive data, check the signal strength of the AIS antenna, and verify that the AIS system is interfacing correctly with the vessel's navigation systems.
8. Register the AIS system: Register the AIS system with the appropriate authorities to comply with regulatory requirements. Obtain a Maritime Mobile Service Identity (MMSI) number for the vessel and ensure that it is programmed into the AIS system.
By following these steps, you can successfully install a Class A AIS system on your vessel and take advantage of the safety and communication benefits that AIS technology provides. Remember to regularly maintain and update your AIS system to ensure continued compliance and effectiveness in enhancing maritime safety.
