🔍 Key Concepts

• Difference between static AIS data (changed rarely) and dynamic AIS data (changes constantly) • Update rates for dynamic data like position, course, and speed (every few seconds) • Which of the listed items would logically need frequent updates for collision avoidance

💭 Think About

• Ask yourself: which of these items can change quickly while the vessel is underway and therefore needs to be refreshed every few seconds? • Which items are normally entered once at the start of a voyage or when the ship is built and then only changed occasionally? • Think about what other ships need in real time on their AIS display to assess risk of collision.

✅ Before You Answer

• Identify which options are clearly static ship particulars (unchanging or rarely changing). • Identify which option relates to the vessel’s current operating condition and may change during the voyage. • Make sure the option you choose is something that other vessels need frequent, near‑real‑time updates about for safe navigation.