Question 19 UFV02 - Mate - Uninspected Fishing Vessels

The Correct Answer is A. A vessel is on your starboard quarter, range decreasing, bearing is constant. ### Why Option A is Correct Option A describes the classic situation where a risk of collision **definitely exists** according to the International Regulations for Preventing Collisions at Sea (COLREGs), Rule 7 (Risk of collision). * **Bearing is constant:** This is the primary indicator of a risk of collision. If the Compass Bearing of an approaching vessel does not appreciably change, a risk of collision exists. * **Range decreasing:** This confirms that the vessel is approaching your position, making the potential collision imminent. * **Starboard quarter:** While being overtaken (which happens on the quarter), the risk of collision still exists if the bearing is steady and the range is closing. Although the burdened vessel is normally the overtaking vessel (Rule 13), the initial determination of risk (Rule 7) is met by the constant bearing, decreasing range observation. ### Why Options B, C, and D are Incorrect **B) A vessel is 22 degrees abaft your port beam, range increasing, bearing is constant.** * **Range increasing:** If the range is increasing, the vessel is moving away from you, eliminating the risk of collision. **C) A vessel is broad on your starboard beam, range decreasing, bearing changing rapidly to the right.** * **Bearing changing rapidly:** A rapid change in bearing means the vessels are on courses that will likely pass clear of each other. While the range is decreasing, the vessels are showing that their closest point of approach (CPA) will be small, but a definitive risk of collision is ruled out by the rapid change in bearing. **D) A vessel is 22 degrees on your port bow, range increasing, bearing changing slightly to the right.** * **Range increasing:** The vessel is moving away from you. * **Bearing changing:** The vessel is not on a collision course. Both factors indicate no risk of collision exists.