Question 45 UFV01 - Master - Uninspected Fishing Vessels

The Correct Answer is B **Explanation for Option B (One prolonged blast):** Option B is correct because the navigation rules (specifically Rule 34(e) of both the International Regulations for Preventing Collisions at Sea, COLREGs, and the Inland Rules) mandate the use of one prolonged blast when a power-driven vessel is nearing a bend or an area of a channel or waterway where other vessels may be obscured by an intervening obstruction. This signal serves as a warning to any vessel approaching from the opposite direction. **Explanation for Incorrect Options:** * **A) One short blast:** This signal indicates "I am altering my course to starboard" (when in sight of another vessel). It is a maneuvering signal, not a blind-bend warning signal. * **C) Two short blasts:** This signal indicates "I am altering my course to port" (when in sight of another vessel). It is also a maneuvering signal. * **D) One long blast:** While "prolonged" and "long" are sometimes used interchangeably in colloquial speech, the precise term in the Rules (COLREGs/Inland) for the warning blast given when nearing a bend is **one prolonged blast** (a blast lasting from four to six seconds). A "long blast" is not the officially defined signal for this situation; using the standard terminology ensures clarity and compliance.