Automatic Identification System (AIS) is a navigation and safety tool used on ships to share real-time information such as vessel position, speed, course, and identity. It helps ships avoid collisions and allows authorities to monitor traffic at sea.

Parts of AIS :

* LCD (Screen) – Displays vessel data, targets, and navigation information.
* Buzzer – Gives alarm sound for warnings or alerts.
* Cursor / Enter (ENT) – Used to navigate and confirm selections.
* Clear / Back (CLR) – Cancels or returns to previous menu.
* Display Mode (DISP) – Changes how information is shown on screen.
* Power / Contrast – Turns the unit on/off and adjusts screen visibility.
* Dimmer– Controls screen brightness for day/night use.
* Menu Button – Opens settings and system options.
* Special Function (USER/SUS) – Custom or quick-access features depending on setup.