What is the main function of navigation marks?

Navigation marks are symbols used to guide ships, determine the course direction and sail safely on the channel. They are usually located in water, including lighthouses, buoys, navigation ships, navigation marks and so on. Its main functions are as follows:

1. Clear course: the navigation mark can provide clear course information for the crew in bad weather such as thunderstorm and dense fog, so as to guide the ship to sail safely and avoid the ship from deviating from the course.

2. Marking obstacles: Navigation AIDS can mark maritime obstacles such as dangerous sea areas, shoals and reefs to remind the crew to pay attention to safety.

3. Remind the ship: the beacon ship or buoy is equipped with an alarm or flash to remind the sailing ship to adjust its course in time to avoid collision.

4. Positioning position: In areas that need positioning, such as offshore joint oil supply stations and oil fields, navigation marks can be used to determine the position, which is convenient for the crew to conduct traffic navigation.

5. Informing information: Navigation AIDS can also release various maritime meteorological information, navigation warnings, posters, etc. Assist the crew to make navigation decisions.

In a word, navigation AIDS play an important role in navigation, and play a vital role in ensuring the safe navigation of ships and reducing accidents such as collisions.

According to different functions and arrangement positions, navigation AIDS can be divided into many types. The following are some common classifications of navigation marks:

1. Lighthouse: usually located on the coastline, it is used to provide obvious signs to the crew at night or in foggy days to ensure the safety of navigation.

2. Buoy: Located in the water, it is usually used to mark the position of waterway, dangerous area or total shallow water area, and its shape and color can also be used to distinguish different marking meanings.

3. Access sign: set beside the access to warn of danger or indicate the access. Different signs have different shapes and colors. For example, "red top cone" means no navigation or warning danger, "green top triangle" means right bank heading, and "red top triangle" means left bank heading.

4. Lighthouse boats: In order to facilitate movement and arrangement, some gondolas with special signs and devices are used, which are usually used in Lake ocean centre and other areas.

5. Marine weather station: used to collect marine environmental information such as water surface temperature, sea level, tidal level, ocean current and wind force. These data are helpful for the crew to make decisions and maintain safe navigation.

In a word, according to their different functions and arrangement positions, navigation AIDS have different classifications, which help to remind the crew to pay attention to safety and play an important role in navigation.