What does "restricted in her ability to maneuver" imply about the vessel?

The phrase "restricted in her ability to maneuver" indicates that the vessel is unable to operate normally due to specific circumstances. This can relate to a variety of situations. For instance, a vessel might be engaged in certain activities such as underwater or maintenance work, which prevents it from changing course or speed readily. This situation acknowledges that the vessel's operations or its physical conditions, such as being loaded or engaged in fishing or towing operations, contribute to its inability to maneuver effectively.

In understanding the operational context of a vessel, it's important to recognize that many maritime activities can limit how a vessel can navigate. Therefore, this choice reflects an accurate interpretation of the phrase, highlighting that the vessel's operational nature restricts its movement capabilities.

The other options do not align with this interpretation. A vessel "not under command" would imply different conditions related to mechanical failure rather than an operational scenario. Saying that a vessel can operate normally contradicts the concept of being restricted in maneuverability. Lastly, being "always at anchor" is too specific, as there are many instances of vessels being restricted in maneuverability without being stationary at anchor.