The Mike Flag informs others that the vessel is:

The Mike Flag, which is part of the International Code of Signals, specifically indicates that a vessel is "Stopped and making no way through the water." This signal serves a critical purpose in maritime communication, as it alerts nearby vessels to the situation of the flagged vessel, ensuring that other mariners are aware of any potential hazards or the need for extra caution in the area. The use of the Mike Flag is essential for promoting safety at sea, as understanding a vessel's status can prevent accidents or collisions.

To provide further context, the meanings of the other options are distinct and not represented by the Mike Flag. For instance, signaling that a vessel is coming alongside or is disabled would involve different flags or signals that convey those specific conditions. The indication of a fire on board would also utilize separate signals to alert surrounding vessels to the emergency. Each flag in the International Code of Signals has a unique purpose, ensuring clear communication in various maritime scenarios.