What is the requirement for equipment used for bell and gong signals?

The requirement for equipment used for bell and gong signals being able to be sounded manually and automatically is essential for ensuring flexibility and reliability in distress signaling. This dual capability allows a vessel to effectively communicate its distress condition under various circumstances. Manual operation provides the crew with direct control, enabling them to signal at appropriate times or respond to emergencies without relying solely on automated systems.

At the same time, the automatic function ensures that a signal can be produced without requiring intervention, which is particularly beneficial in situations where the crew may be incapacitated or unable to operate the equipment. This redundancy enhances the vessel's safety, as it maximizes the chances of being heard and receiving help during a distress situation.

Having both manual and automatic capabilities aligns with the COLREGs standards for maritime safety, ensuring that distress signals can be properly articulated to nearby vessels and enable assistance in emergencies.