Question 6 AT01 - Assistance Towing Endorsement

The Correct Answer is C **Why option C is correct:** In maritime terminology, particularly related to towing, a tug is considered "in irons" (or sometimes "girted") when the towing hawser becomes snagged or fouled on the bottom, usually in a manner that pulls the tug beam-on or transversely to the direction of the tow. This situation creates an immediate danger because the tension in the hawser, running sharply to the side, can exceed the tug's stability limits, leading to potential capsizing or being held immovably in a fixed, dangerous position until the hawser is cut or freed. **Why the other options are incorrect:** * **A) an adverse current:** While an adverse current can make maneuvering difficult or hold a vessel in a fixed location (like against a dock), the specific phrase "in irons" refers to the mechanical restriction and critical danger imposed by a fouled towing hawser, not merely operational difficulty due to water movement. * **B) the weight of its tow, its being anchored, or grounded:** Being held fast due to grounding or anchoring is a state of being held (often called "fast" or "aground"), but "in irons" specifically describes the dangerous, unstable condition caused by the side-pulling force of a fouled towing hawser. The weight of the tow itself might make the tug immobile, but not necessarily "in irons." * **D) lack of power or an engine breakdown:** A tug that has lost power is often described as "adrift" or "disabled." While it is held in a position by external forces (wind/current) and cannot move, the term "in irons" is reserved for the immediate and specific mechanical constraint and danger caused by the fouling of the tow line.