How often does the T200B transmit?

The T200B and T200B-S transmits its static data, i.e. name, call-sign, type of vessel and dimensions once every 6 minutes, and its dynamic data, i.e. position, course and speed once every 3 minutes if travelling 2 knots or less, and once every 30 seconds if travelling faster than 2 knots.

For more in-depth information regarding AIS reporting intervals, visit the article: What are AIS reporting intervals?