OUPV Sound & Light Signals | 2025/2026 Exam | 31 Questions | Whistle Blasts, Light Flashes, Fog Signals

This document features 31 clearly answered and verified questions focused on the Sound and Light Signals section of the OUPV (Operator of Uninspected Passenger Vessels) license exam, structured for the 2025/2026 USCG certification cycle. It delivers a precise breakdown of navigation signaling requirements per the Navigation Rules (COLREGS and Inland Rules). Topics include: Whistle and sound signals for vessels of different lengths (≥12m, ≥20m, ≥100m) and corresponding required equipment (bell, whistle, gong) Definitions and durations of short blasts (1 second) and prolonged blasts (4–6 seconds) Overtaking and crossing signals in both international and inland waters (e.g., one short blast = starboard turn; two = port; three = astern propulsion) Use of flashing white lights for visual signal equivalents and minimum visibility standards (5 NM) Required signals for vessels in restricted visibility (e.g., underway, stopped, towing, at anchor, aground) Special signaling patterns for pilot vessels, tows, composite units, and vessels less than 12 meters Situational signaling: bend warning, doubt or danger signals, and anchor signals with bells and gongs This resource provides a compact, high-yield study aid for mastering sound and light signaling—a highly tested and safety-critical section of the OUPV exam. Best suited for: OUPV (6-pack) license candidates preparing for the USCG Rules of the Road section Students of maritime academies and captain’s schools like Sea School, Chapman School of Seamanship, SUNY Maritime, or Cal Maritime Charter boat operators, fishing guides, and commercial small vessel captains Learners enrolled in USCG-approved courses for inland and international navigation The straightforward Q&A format helps candidates build fast recognition of required signals and ensures readiness for both written and oral testing. Keywords: OUPV sound signals, light flashes, USCG 2025 exam, short blast, prolonged blast, overtaking signal, bend warning signal, restricted visibility, fog horn rules, anchor bell signal, vessel aground, flashing white light, power vessel signals, inland rules, international COLREGS, pilot vessel signal, composite unit, under 12m signal rule, whistle blasts navigation