Question 12 OSV01 - Master/Chief Mate - Offshore Supply Vessels

The Correct Answer is A Option A ("take all way off, if necessary") is correct because it directly addresses the requirements of Rule 19(e) of the International Regulations for Preventing Collisions at Sea (COLREGS), which governs conduct of vessels in restricted visibility. Rule 19(e) states that if a vessel detects the presence of another vessel forward of the beam, and risk of collision exists, it shall take timely action to avoid collision. This action includes, where necessary, reducing speed to a minimum (steerage way) or **taking all way off**. Taking all way off (stopping the vessel's motion through the water) is the ultimate mandated precaution if circumstances require it to avoid collision in restricted visibility. **Why the other options are incorrect:** * **B) stop your engines:** While stopping the engines might be part of taking all way off, it is not the *required action* itself. A vessel can stop its engines yet still maintain considerable way through the water. The Rule mandates taking "all way off," which is a navigational state, not merely an engine action. Furthermore, sometimes minimum engine power is needed to maintain steerage way (minimum speed) if not taking all way off completely. * **C) begin a radar plot:** Beginning a radar plot is an action required earlier in the scenario (Rule 19(d)), when a vessel detects another vessel by radar and determines that a risk of collision exists. While good seamanship dictates continuously monitoring radar, it is not the *mandated maneuver* required by Rule 19(e) when risk of collision exists forward of the beam; the mandated action in 19(e) is speed reduction or stopping. * **D) All of the above:** Since options B and C are not the primary, universally required action under Rule 19(e), this option is incorrect.