Why are sound-powered telephones favored for battle damage control on ships?

• A. They require external power, are rugged, and can operate under damaged or flooded conditions
• B. They are silent devices
• C. They require no external power, are rugged, and can operate under damaged or flooded conditions
• D. They are used for data transfer only

Answer: (C)

Sound-powered telephones are favored because they work without any external power, which means they stay usable even if the ship’s generators, batteries, or electrical systems are damaged or out of service. Their rugged construction is designed to withstand the rough conditions of battle damage scenarios, including shock, vibration, and rough handling. Because the signaling relies on the operator’s voice and a straightforward line circuit, they can function in damaged or flooded compartments where electronic gear might fail, short, or be powered down. This combination—no power dependency, toughness, and operability in compromised spaces—gives them reliable, immediate communication during damage control.