Question 5 OSV01 - Master/Chief Mate - Offshore Supply Vessels

The Correct Answer is C ### Why Option C ("the nature of her work") is correct: The definition of a "vessel restricted in her ability to maneuver" (RAM) comes directly from the International Regulations for Preventing Collisions at Sea (COLREGs) Rule 3(g). A vessel is classified as RAM when, **by the nature of her work**, she is unable to maneuver as required by the rules and therefore cannot keep out of the way of another vessel. The restriction is inherent to the specialized operation the vessel is performing (e.g., dredging, laying a pipeline, engaging in flying operations, or refueling/replenishing underway). ### Why the other options are incorrect: **A) her draft** This definition refers to a "vessel constrained by her draft" (CBD). While CBD vessels also have limited maneuverability, they are restricted due to the relationship between their deep draft and the available depth and width of navigable water, not the nature of a specific job being undertaken. **B) some exceptional circumstances** If a vessel is unable to keep out of the way due to an unexpected problem or mechanical failure (an exceptional circumstance), she is legally defined as "not under command" (NUC). This is distinct from a vessel that is intentionally restricted due to the work she is performing (RAM). **D) a danger of navigation** A danger of navigation (such as a wreck or a narrow channel) might require any vessel to alter course, but it does not define the legal *status* of a vessel as "restricted in her ability to maneuver." The RAM definition focuses on the vessel's operational constraints.