What is AIS or Automatic Identification System ?

•  Ships Position (in Lat & Long) with positional accuracy of 1/10,000th of a minute.
• Time In UTC accurate to nearest second when this data was generated
• Course Over Ground (upto one decimal place accuracy)
• Speed Over Ground 0 to 102 knots
• Heading
• Rate of Turn (Where Fitted) right or left, 0 to 720 degrees per minute
• CPA/TCPA

VOYAGE RELATED DATA (to be entered by ship staff)

• Ships Draft (0.1 meter to 25.5 meters)
• Hazardous Cargo
• ETA (UTC) & Destination (Max. 20 characters)
• Route

SAFETY RELATED MESSAGES (entered by ship staff)

Updating of Data

Dynamic

• At Anchor — every 6 minutes
• Underway –
  • 0-14 kts -every 12 secs /4 secs when a/c
  • 14-23 kts – every 6 secs /2 secs when a/c
  • >23 kts – every 3 secs /2secs when a/c
• Static/Voyage Data: Every 6 minutes or whenever amended
• Safety Messages: As and when required.

TO UNDERSTAND BETTER, PLEASE WATCH THIS VIDEO  

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