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Question 1. Which of the following is the primary purpose of a “scope” when anchoring a vessel? A) To increase the weight of the anchor. B) To reduce the angle of pull on the anchor chain. C) To shorten the length of the anchor rode. D) To allow the vessel to swing freely. Answer: B Explanation: A larger scope (typically 5‑ 7 : 1) reduces the angle of pull, helping the anchor dig into the seabed and hold better. Question 2. When executing a “person overboard” (POB) recovery using the “quick turn” method, the vessel should: A) Turn the wheel hard to starboard and maintain full speed. B) Reverse the engine to stop the vessel immediately. C) Turn the wheel hard to port and reduce speed to a slow forward. D) Continue on course and wait for the person to swim to the boat. Answer: C Explanation: The quick turn brings the vessel back onto the POB’s track quickly while maintaining forward motion for control. Question 3. Which hull type is most likely to experience “planing” at speeds above 15 knots? A) Displacement hull. B) Catamaran. C) Multi‑hull with deep V‑section. D) Flat‑bottomed planing hull. Answer: D
Explanation: Flat‑bottomed planing hulls are designed to rise and glide on the water surface at higher speeds, unlike displacement hulls. Question 4. In a towing operation, the tow line should be attached to the towing vessel’s: A) Bow cleat. B) Stern hook. C) Mid‑ship rail. D) Engine room bulkhead. Answer: B Explanation: The stern hook provides a direct line of pull and reduces the risk of line fouling with the vessel’s own propulsion. Question 5. When crossing a surf zone at a river mouth, the safest approach is to: A) Enter at high tide with engines at idle. B) Cross at low tide to expose sandbars. C) Enter with a moderate head‑on wave and maintain a steady speed. D) Turn sharply to avoid the waves. Answer: C Explanation: Maintaining a steady speed and heading reduces the chance of being pushed onto a sandbar or broached by waves. Question 6. On a paper chart, the symbol of a blue square with a white dot indicates: A) A lighthouse. B) A safe water buoy. C) A buoy with a light characteristic “Fl 2”. D) A depth contour.
D) Clear skies and calm seas. Answer: C Explanation: Cold fronts bring stronger winds from the direction the front is moving (southerly in the Southern Hemisphere) and cooler air. Question 10. According to COLREGs, when two power‑driven vessels are on a crossing course, the vessel which has the other on its starboard side must: A) Give way. B) Stand on. C) Reverse engines. D) Sound one short blast. Answer: A Explanation: The vessel that has the other on its starboard side is the “give‑way” vessel and must take early action to avoid collision. Question 11. A vessel displaying three all‑round white lights, one on top of the other, is identified as: A) A vessel engaged in fishing. B) A vessel not under command. C) A vessel restricted in its ability to maneuver. D) A vessel towing another. Answer: C Explanation: Three all‑round white lights indicate a vessel restricted in its ability to maneuver (RIM). Question 12. The sound signal for a vessel that is “unable to keep its way” is: A) One short blast.
B) Two short blasts. C) One prolonged blast. D) Five short blasts. Answer: C Explanation: One prolonged blast signals that a vessel is unable to keep its way. Question 13. Which certificate is required for a commercial vessel of 12 m operating in Australian coastal waters? A) International Load Line Certificate. B) Domestic Commercial Vessel (DCV) Class 2 Certificate. C) Small Vessel Operator’s Licence (SVOL). D) None; only a registration is needed. Answer: B Explanation: DCV Class 2 certificates cover vessels up to 12 m used for commercial purposes in coastal waters. Question 14. Before starting a diesel engine, the correct pre‑start checklist includes: A) Opening all ventilation hatches fully. B) Checking oil pressure, fuel filters, and ensuring the cooling water pump is primed. C) Filling the fuel tank to 100 %. D) Turning the propeller manually to test resistance. Answer: B Explanation: Oil pressure, fuel filter condition, and cooling water pump priming are critical for a safe diesel start. Question 15. In a marine cooling system, the purpose of the “heat exchanger” is to:
Question 18. When inspecting a vessel’s hull for integrity, the presence of “blisters” on the bottom plating most likely indicates: A) Structural corrosion. B) Osmotic blistering from water ingress. C) Loose fasteners. D) Marine growth. Answer: B Explanation: Osmotic blistering occurs when water penetrates the protective coating, forming raised blisters. Question 19. The “free surface effect” in a vessel’s bilge primarily reduces: A) Draft. B) Propulsive efficiency. C) Transverse stability. D) Fuel consumption. Answer: C Explanation: Water moving freely in the bilge creates a shifting centre of gravity, reducing transverse (roll) stability. Question 20. In the event of a man overboard in cold water, the first action after initiating recovery is to: A) Deploy a life raft immediately. B) Throw a flotation device or life ring toward the person. C) Increase vessel speed to outrun the person. D) Sound a prolonged blast.
Answer: B Explanation: Providing a flotation aid increases the survivor’s chance of staying afloat while the vessel maneuvers for recovery. Question 21. Which MARPOL annex deals specifically with the prevention of pollution by oil? A) Annex I. B) Annex II. C) Annex III. D) Annex V. Answer: A Explanation: MARPOL Annex I sets the rules for oil pollution prevention. Question 22. The correct VHF channel for a distress call (MAYDAY) is: A) 16. B) 13. C) 22A. D) 70. Answer: A Explanation: Channel 16 (156.8 MHz) is the international distress, safety, and calling frequency. Question 23. When using a GPS chart plotter, the “snap‑to‑road” function is: A) Used to align the vessel’s track to the nearest road. B) Not applicable in marine navigation. C) A feature that automatically aligns plotted waypoints to known waterway routes. D) A tool to correct position errors caused by multipath.
C) To indicate a vessel is about to reverse engines. D) To alert nearby vessels of a man overboard. Answer: C Explanation: Five short blasts is a danger signal, not a reversal signal. Reversing engines is indicated by one prolonged blast. Question 27. When using a diesel engine’s “pre‑heat” function, the purpose is to: A) Warm the cabin interior. B) Heat the fuel to improve combustion in cold conditions. C) Increase engine RPM before launch. D) Cool the exhaust system. Answer: B Explanation: Pre‑heating the fuel reduces viscosity, ensuring proper atomisation and start‑up in low temperatures. Question 28. The proper method for securing a life‑raft on deck is to: A) Tie it directly to the mast with a single line. B) Use a dedicated life‑raft cradle with quick‑release shackles. C) Place it on the deck without restraints. D) Hang it from the bow rail with a rope. Answer: B Explanation: A cradle with quick‑release shackles allows rapid deployment while keeping the raft secure during travel. Question 29. The term “draft” of a vessel refers to: A) The distance from the waterline to the top of the deck.
B) The vertical distance between the keel and the waterline. C) The amount of fuel on board. D) The angle of the propeller blades. Answer: B Explanation: Draft is the depth of the hull below the waterline, crucial for clearance under bridges and in shallow water. Question 30. When performing a “hard‑to‑port” turn to avoid a collision, the vessel should: A) Turn the wheel hard to port while maintaining engine RPM. B) Reverse the engines and turn to starboard. C) Reduce speed to idle, then turn to starboard. D) Sound three short blasts and hold course. Answer: A Explanation: A hard‑to‑port turn changes the vessel’s heading quickly to starboard, helping avoid a crossing vessel on the port side. Question 31. Which of the following best describes the “tide‑height factor” used in anchoring calculations? A) The difference between high and low tide. B) The predicted tide height at the time of anchoring. C) The ratio of tidal range to vessel length. D) The time interval between successive high tides. Answer: B Explanation: The tide‑height factor is the expected water level at the anchoring time, used to set proper scope and depth.
Question 35. The purpose of a “bilge pump alarm” is to: A) Notify the crew of excessive water accumulation in the bilge. B) Indicate low battery voltage. C) Signal that the engine oil pressure is low. D) Warn of a fire in the engine room. Answer: A Explanation: Bilge pump alarms alert the crew when water levels exceed a preset limit, prompting immediate action. Question 36. When interpreting a METAR weather report, the code “RA” indicates: A) Light rain. B) Moderate rain. C) Heavy rain. D) Rain showers. Answer: A Explanation: “RA” is the abbreviation for rain; intensity is given by preceding symbols (e.g., “‑RA” light, “RA” moderate, “+RA” heavy). Question 37. According to the International Regulations for Preventing Collisions at Sea, a vessel displaying a “yellow” light with a single arc is identified as: A) A vessel at anchor. B) A vessel not under command. C) A vessel engaged in fishing. D) A vessel restricted in its ability to maneuver. Answer: C
Explanation: A yellow light with a single arc (or a yellow flashing light) indicates a fishing vessel. Question 38. The “engine telegraph” on a small commercial vessel primarily serves to: A. Communicate with other vessels. B. Indicate engine order changes from bridge to engine room. C. Measure fuel consumption. D. Control the vessel’s navigation lights. Answer: B Explanation: The engine telegraph transmits commands (e.g., “Full Ahead”, “Stop”) from the helm to the engine crew. Question 39. Which type of battery is most commonly used for a 12 V DC system on a small commercial vessel? A) Lead‑acid flooded battery. B) Lithium‑ion battery. C) Nickel‑cadmium battery. D) Alkaline battery. Answer: A Explanation: Lead‑acid flooded batteries are standard for marine 12 V DC systems due to cost, reliability, and ease of maintenance. Question 40. A “clove hitch” is most appropriately used for: A) Securing a line to a post where quick release is required. B) Creating a fixed loop at the end of a rope. C) Splicing two ropes of different diameters. D) Tying a decorative bow.
D) It provides no feedback to the helmsman. Answer: B Explanation: Hydraulic steering transmits the helmsman’s input via pressurised fluid from a pump to a steering cylinder. Question 44. In a “tide‑and‑current” table, the “range” column indicates: A) The maximum depth of water at high tide. B) The difference between the highest and lowest predicted water levels. C) The speed of the current at the time of high tide. D) The distance between two successive high tides. Answer: B Explanation: The range is the vertical distance between predicted high and low water levels. Question 45. A vessel equipped with a “gyrocompass” provides: A) True north reference unaffected by magnetic variation. B) Magnetic north reference that varies with the Earth’s field. C) GPS‑derived heading only when satellite signal is present. D) A backup system for the depth sounder. Answer: A Explanation: A gyrocompass aligns with Earth’s rotation axis, giving a true north heading independent of magnetic variation. Question 46. The correct response to an EPIRB activation signal is to: A) Immediately change course toward the signal. B) Wait for a SAR vessel to arrive; no further action required. C) Notify the nearest coastal radio station and monitor for instructions.
D) Turn off all electronic devices to conserve battery. Answer: C Explanation: An activated EPIRB transmits a distress beacon; the crew must report the situation to the nearest VHF or coastal station and follow SAR instructions. Question 47. The “MARPOL Annex V” primarily addresses: A) Oil pollution. B) Noxious liquid substances. C) Garbage disposal. D) Air emissions. Answer: C Explanation: Annex V deals with the prevention of pollution by garbage from ships. Question 48. When a vessel is “towing a disabled vessel”, the tow line should be: A) Connected to the towing vessel’s helmsman’s wheel. B) Attached to a bridle that distributes load across the bow and stern. C) Secured directly to the disabled vessel’s propeller shaft. D) Fixed to the towing vessel’s anchor chain. Answer: B Explanation: A bridle spreads the towing load, reducing stress on a single point and improving control. Question 49. Which of the following is the most effective method for reducing “hull fouling” on a wooden vessel? A) Painting the hull with high‑gloss enamel. B) Applying a copper‑based anti‑fouling paint and regular cleaning. C) Using a smooth plastic sheathing.
C) A vessel engaged in fishing. D) A vessel anchored. Answer: B Explanation: A vessel not under command shows a white light with a single red flash every 5 seconds. Question 53. The “stand‑by” position for a diesel engine’s fuel pump lever is: A) “ON”. B) “RUN”. C) “IDLE”. D) “OFF”. Answer: D Explanation: “OFF” isolates the fuel pump, preventing fuel flow when the engine is not in operation. Question 54. When a vessel is “over‑speeding” in a narrow channel, the most appropriate corrective action is to: A) Increase throttle to clear the channel faster. B) Reduce speed to a safe maneuvering speed and maintain a proper lookout. C) Sound three short blasts and continue at current speed. D) Reverse engines immediately. Answer: B Explanation: Reducing speed improves handling and reduces the risk of collision in confined waterways. Question 55. The primary purpose of a “bilge keel” on a displacement hull is to: A) Increase propulsion efficiency. B) Reduce rolling motion by damping water flow.
C) Provide a mounting point for the engine. D) Store fresh water. Answer: B Explanation: Bilge keels act as dampers, limiting roll by creating resistance as the hull rolls through water. Question 56. Which of the following statements about “dead reckoning” navigation is correct? A) It relies solely on satellite data. B) It uses a vessel’s last known position, speed, and course to estimate current position. C) It is the most accurate method for long‑range ocean passage. D) It requires continuous visual bearings on landmarks. Answer: B Explanation: Dead reckoning projects a position from a known point using speed, course, and time elapsed. Question 57. In the event of a fire in the engine room, the first step according to standard procedure is to: A) Open all ventilation hatches to disperse smoke. B) Isolate the fuel supply and activate the appropriate fire extinguisher. C) Increase engine RPM to blow out the fire. D) Sound a continuous long‑duration horn blast. Answer: B Explanation: Cutting fuel and using the correct extinguisher (usually CO₂ or foam) are immediate actions to suppress an engine‑room fire. Question 58. The “rudder angle indicator” on the helm station provides:
