What does ERT stand for in maritime operations?

In maritime operations, ERT stands for Engine Revolution Telegraph. This device is crucial for communication between the bridge and the engine room, allowing the captain to relay commands regarding engine speed and direction to the engineers. The engine revolution telegraph indicates to the crew how fast the engine should operate, which is essential for navigation and maneuvering of the vessel. Understanding this term is key in maintaining efficient communication and operation within maritime environments.

The other terms provided may relate to different contexts or industries, but they do not pertain to the established terminology used in maritime operations for engine speed communication. Therefore, focusing on "Engine Revolution Telegraph" offers clarity on the responsibilities and tools necessary for effective maritime management.