Question 68 TV01 - Towing Vessels - Oceans or Near Coastal

The Correct Answer is B **Why option B is correct:** In maritime terminology, particularly concerning tug operations, a vessel (often a tug) is described as being "in irons" when its ability to maneuver or move is severely restricted or halted due to an external physical constraint caused by its rigging or lines. Specifically, a tug is considered "in irons" when the towing hawser (the large cable or rope used for towing) becomes snagged, fouled, or wedged on the bottom (e.g., catching on a wreck, rock, or seabed obstruction). This snag holds the tug fast and prevents it from proceeding or turning, regardless of engine power. **Why the other options are incorrect:** * **A) the weight of its tow, its being anchored, or grounded:** While these conditions stop a tug's movement, they are described using different, more specific terminology. Being stopped by the weight of the tow is often called "losing the tow" or "being overpowered." Being held by an anchor is "at anchor." Being stuck on the seabed is "aground" or "grounded." None of these situations define the unique condition of being "in irons" caused by a snagged line. * **C) an adverse current:** Being held or slowed down by an adverse current is typically referred to as "making leeway," "stemming the current," or "being set back." This is a fluid dynamic issue overcome by increasing power, not a fixed physical constraint caused by the vessel's gear snagging. * **D) lack of power or an engine breakdown:** A vessel that cannot move due to mechanical failure or lack of fuel is generally described as "dead in the water" or "suffering a casualty." This refers to internal failure, whereas "in irons" specifically refers to being immobilized by a snagged external line (the hawser).