Where are the switches located for the "77" lights?

The switches for the "77" lights are located on the Bridge because this is the command center from which the vessel is operated, and it is essential for navigation and safety to have control over lighting in this area. The Bridge often houses essential equipment and controls that help in monitoring and maintaining various systems on the ship, including lighting that indicates the ship's status and aids in visibility for both the crew and any other vessels nearby.

In contrast, the other locations listed do not typically serve the same purpose in relation to navigation and command operations. The Main Deck and Engine Room are critical for other ship functions, while the Cockpit, primarily associated with aircraft or smaller watercraft, does not apply in the same context for larger vessels. Therefore, locating the "77" lights' switches on the Bridge aligns with operational protocols and practices, ensuring that they can be easily accessed when needed.