Which automatic TELEX command should a ship station use to address a weather report to the national weather authority?

The appropriate command for a ship station to address a weather report to the national weather authority is to begin with "OBS+" and then send the weather report. The "OBS+" command is specifically designated to indicate the transmission of observations, which includes weather data. This command succinctly communicates to the receiving party in the national weather authority that the message contains essential weather information.

The process that follows after "OBS+" is crucial; it allows the ship station to effectively relay important meteorological conditions that may impact navigation and safety at sea. By using this command structure, the ship ensures compliance with established protocols for reporting weather, thereby aiding in the accuracy and efficiency of meteorological data collection.

Other command options may include elements that do not align with the standard protocol for transmitting weather reports. For example, the use of additional prefixes or different sequence may not be recognized by the receiving authority, which could lead to confusion. Therefore, using the straightforward "OBS+" followed by the weather report ensures clarity and adherence to proper communication practices.