One of my interests is automatic man overboard systems on cruise ships.

Cruise lines are super-secret when it come to whether their ships have man overboard systems and, if so, what type of system is installed.

Acquaintances of mine went on a Disney cruise in March and watched as the ship’s man overboard system was tested.

A crew member threw a rubber test dummy on a rope over the rail and logged the results whether the system detected the "person" going overboard.

An officer also talked to them about the man overboard system, saying that the monitoring equipment on the bridge is a "pain" for the bridge officers.

There is also an issue with false alarms, mostly from the ocean spray.

Anyone has details regarding what type of system Disney, or other cruise lines, is using?

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Update: Credit for info below, the Disney Cruise Line Blog.