Should vessels display day shapes when restricted in their ability to maneuver?

Vessels that are restricted in their ability to maneuver are required to display specific signals to indicate their status. However, they are not obligated to display day shapes during all times. Instead, the regulations specify that day shapes must be displayed only when conditions allow for visual signals, primarily during daylight. Hence, the statement that vessels should display day shapes regardless of time or conditions is incorrect, making the answer 'false' valid in this context.

Day shapes serve an important function in maritime communication, allowing other vessels to understand the operational limitations of a vessel at a distance. However, these signals are relevant primarily during the day, and their display is not a 24-hour requirement. In conditions of low visibility or at night, vessels rely on other types of signals, such as lights.

In summary, it's important to understand that the requirement to display day shapes is specifically tied to visibility conditions and is not mandatory in the dark, which confirms the correctness of the 'false' answer provided.