Question 204Electricity & Electronics - Assistant Engineer

The correct answer is B) Sound-powered telephone system. In a steering emergency where no external source of power is required, a sound-powered telephone system would be the appropriate means of two-way communication between the wheelhouse and the steering gear room. Sound-powered telephones operate without the need for electricity, making them a reliable and redundant communication method in the event of a power failure. This is in accordance with the requirements set forth by the US Coast Guard for ensuring effective communication during steering emergencies on board vessels. The other options, such as two-way portable radios (A), the ship-service telephone system (C), and the emergency loudspeaker system (D), would not be suitable for this specific scenario as they either require an external power source or may not provide the necessary two-way communication capabilities.