What does a power vessel making way indicate in terms of sound signals?

Answer: D — No sound signal is required

When a power vessel is making way through the water, it is not required to sound any specific sound signal under the COLREGs regulations. This indicates that the vessel is actively moving and, therefore, is assumed to be aware of its surroundings and capable of maneuvering. The absence of a required sound signal implies that the vessel is engaged in its operations and does not need to communicate its status with any other surrounding vessels. Other options may suggest sound signals that apply in different contexts. For example, specific sequences of bells or sound signals may be relevant in situations involving anchoring or restricted visibility, but they do not apply when a vessel is making way. Understanding these distinctions helps clarify the appropriate actions and sound signaling requirements for different navigational scenarios.