Maritime Navigation Rules and Vessel Responsibilities: International and Inland Regulations Practice Test

These questions are part of the practice quiz. Start practicing

• In a narrow channel, what signal should you sound when being overtaken by a vessel intending to pass on your starboard side?
• How many masthead lights should a 45-meter tugboat towing two barges astern (total length 250m) display?
• What is the typical response to a vessel signaling danger or distress?
• Which vessels are exempt from the requirement to sound fog signals every two minutes?
• In which conditions should you reduce speed as a precaution?
• When are vessels permitted to depart from the requirements of the Rules?
• Which signal is used when you do not understand an approaching vessel’s course or intentions during daylight?
• What is a Traffic Separation Scheme (TSS) and its purpose?
• Inland: What is the color of the lights on a fleet of moored barges extending into a navigable channel?
• The sternlight must show from dead astern to how many degrees on each side?
• In fog, a power-driven vessel underway but stopped and making no way must sound which signal?
• In a scenario where a vessel on your starboard quarter has decreasing range but constant bearing, what does this indicate about collision risk?
• How inland and international rules treat a vessel not under command?
• What is the role of 'lookout' and watchkeeping at sea?
• In the context of COLREGs, what does 'taking action within the Rules' most commonly entail?
• In a head-on situation, what is generally recommended for both vessels?
• In inland waters, how many white anchor lights must a barge more than 50 meters long show when anchored in a special anchorage area?
• If a fishing vessel approaches a vessel not under command, which vessel must keep clear?
• Two prolonged blasts at not more than two-minute intervals is the fog signal for which situation?
• A vessel engaged in dredging while underway is restricted in her ability to maneuver.
• Which statement best describes inland traffic patterns' influence on rule application?
• When two power-driven vessels are crossing, which is the stand-on vessel?
• A law enforcement vessel patrolling a marine regatta may show either a flashing blue light or what other signaling device?
• What must a vessel that is required to keep out of the way do?
• During daylight, how does a dredge indicate the side on which it is safe to pass?
• Which of the following best describes objects included in the term 'vessel' under the Rules?
• International Only: What light signal is used to indicate passing intentions?
• What is the main difference in rule enforcement between inland waterways and international sea navigation?
• What is the general purpose of a Traffic Separation Scheme?
• If you are in an 18-meter tug crossing a narrow channel and sight a tankship coming up the channel, what is your obligation?
• Which option correctly identifies the night light configuration of a fishing vessel (not trawling)?
• Which lights does a towing vessel pushing a barge ahead and rigidly connected in a composite unit show?
• When visibility is restricted, what should a vessel do to communicate with others?
• When another vessel is not complying with avoid-collision obligations, what should a compliant vessel do?
• When underway in a channel, which side should you keep to?
• A vessel is overtaking another vessel at night. The overtaking vessel can see which light of the vessel being overtaken?
• You are heading due east (090°T) and observe a vessel's red sidelight on your port beam. The vessel may be heading ________.
• Which dayshape is used to indicate a tow longer than 200 meters?
• What action should a stand-on vessel take if the other vessel on her port side is turning to starboard?
• A vessel being towed astern must display which light arrangement?
• To comply with the Rules, what must a mariner take due regard of?
• What lights indicate a power-driven vessel underway at night?
• During daylight, a vessel engaged in fishing must display which day signal?
• Which of the following is NOT considered restricted in her ability to maneuver?
• If a vessel is over 100 meters in length, what signaling equipment is required?
• What is the minimum length of an anchored vessel required to show a white light both forward and aft?
• What daylight signal shows a vessel is at anchor?
• Under International Rules, a vessel constrained by her draft must be which type of vessel?
• In fog, three distinct bell strokes followed by five seconds of rapid bell ringing followed by three distinct bell strokes indicates a vessel ________.
• Which vessel would NOT sound a fog signal of one prolonged blast and two short blasts?
• If your power-driven vessel is not making way but not disabled, and another power-driven vessel approaches on your starboard beam, what is your status?
• When does the rule regarding lookouts apply?
• The rule regarding lookouts applies in which conditions?
• In fog, which action is correct when you hear a fog signal from ahead?
• On open waters, a power-driven vessel shall keep out of the way of which vessel?
• Which outcome is most likely if a mariner studies a practice test on Maritime Navigation Rules?
• If another vessel fails to comply with avoid-collision rule, how should your vessel respond?
• In inland navigation, what lights must a single vessel being towed alongside show?
• A 22-meter sailing vessel when also propelled by machinery shall show during daylight hours a ________.
• What is the difference between 'stand-on' and 'give-way' vessels?
• What operation is indicated by two cones apexes together?
• What is the role of sound signals in restricted visibility?
• Under International Rules, if you are crossing a narrow channel and a vessel to port is within the channel and can only navigate within it, what should you do?
• In a head-on meeting between two power-driven vessels, what maneuver should each vessel perform to reduce risk of collision?
• A fishing vessel may be using which gear during operation?
• What lights does a vessel not under command, underway but not making way, show?
• When approaching other vessels in restricted visibility, what is the master's responsibility?
• How do wind and current influence collision avoidance decisions?
• The danger signal indicates ________.
• Which statement describes COLREGs?
• A sailing vessel is NOT required to keep out of the way of which vessel?
• What is the main purpose of the COLREGs?
• What does a vessel display to indicate she is not under command?
• When a stand-on vessel takes action to avoid collision, what should she avoid doing if possible?
• If you are the stand-on vessel and you detect increasing risk of collision, what should you do?
• What does the fog signal of one prolonged blast followed by two short blasts indicate?
• Which vessels are not allowed to show yellow lights under the International Rules?
• In heavy fog, when you hear the fog signal of a vessel ahead, what action should you take?
• In international waters, what does a short blast by the give-way vessel indicate in a crossing situation?
• Which best describes the purpose of vessel responsibilities within international and inland regulations?
• At night, what lights does a vessel engaged in fishing, other than trawling, show?
• Which of the following is NOT typically restricted in her ability to maneuver?
• What factor must be taken into account when determining safe speed?
• Under International Rules, which vessel must avoid impeding the safe passage of a vessel constrained by her draft?
• A vessel displaying a rigid replica of the International Code flag 'A' is engaged in which operation?
• On a small motorboat, what daytime signal identifies a law enforcement boat?
• What is recommended for vessels approaching a port entrance or harbor approach?
• A power-driven vessel must keep out of the way of which types of vessels?
• In a crossing situation, a power-driven vessel has a sailing vessel on its port side. What must the power-driven vessel do?
• Which vessel would NOT sound a fog signal of one prolonged blast and two short blasts?
• Inland Only: Yellow lights are not used to identify which type of vessel?
• While underway and in sight of another vessel, you put your engines full speed astern. Which whistle signal is true?
• What color light may be used with a vessel's whistle?
• Which of the following correctly lists examples included in the term vessel?
• While underway in a harbor you hear a vessel sound a prolonged blast. This signal indicates that this vessel ________.
• Why is understanding inland versus international rules important for voyage planning?
• What is the key purpose of the COLREGs in port approaches and busy waterways?
• When must the lights required by the Rules be shown?
• Which power-driven vessel is NOT required to carry a light in the position of the after masthead light?
• Which signal sequence indicates a vessel is aground in fog?
• When taking action to avoid collision, you should ________.
• While underway in fog, if you hear a signal ahead and a risk of collision exists, what must you do?
• In a crossing situation, the give-way and stand-on roles are best described as?
• What is the fundamental duty of a lookout?
• A vessel using a traffic separation scheme is forbidden from doing?
• What does a flashing blue light indicate on a small motorboat during the day?
• Which of the following is a key benefit of AIS in collision avoidance?
• Lighting requirements in inland waters are different from those in international waters for ________.
• What lights must a vessel being towed at night show?
• Under the International Rules, which vessel is not permitted to display yellow lights?
• Which factors affect a vessel's 'safe speed'?
• In fog, a vessel being towed, if manned, shall sound a fog signal of ________.
• Which signal indicates doubt as to another vessel's actions?
• What lights must sailboats show when underway at night?
• When two vessels are both stand-on, which statement about action to avoid collision is correct?
• Can a vessel's priority be determined solely by its type (sailing vs power) under COLREGs?
• If two vessels are on crossing courses, how can you maintain a safe distance?
• Under International Rules, which vessel must keep out of the way of all others listed: vessel constrained by draft, vessel restricted in ability to maneuver, vessel pushing a barge, or vessel engaged in fishing?
• In COLREGs, what is the purpose of emergency maneuvering?
• How is a vessel transferring cargo while underway classified under the Rules?
• What is the main purpose of the Maritime Navigation Rules practice test?
• In a crossing situation on international waters, a short blast by the give-way vessel indicates that the vessel ________.
• Are there special rules for towing operations, and if so, what do they address?
• While at anchor, why are anchor signals and anchor watch important?
• Under International Rules, which statement is true about a vessel constrained by her draft?
• In fog, which observation would indicate that another vessel is in sight?
• In dense fog, what does a signal of one prolonged blast followed by three short blasts indicate?
• Radar aids in early risk assessment by providing what information to support collision avoidance?
• How do Inland Navigation Rules differ from International Rules in principle?
• In what scenario should you consider reducing speed besides restricted visibility and poor weather?
• From sunset to sunrise, when are navigation lights required to be shown?
• The practice test assesses ability to apply COLREGs in which contexts?
• What is the minimum length of vessels required to show two anchor lights?
• What is the purpose of anchor signals and the anchor watch concept?
• What light(s) would you expect to see when coming up on a vessel from astern at night?
• Which vessel must have a gong, or other equipment which will make the sound of a gong?
• Which practice best supports maintaining safety through continuous awareness at sea?
• A white masthead light shows through an arc of visibility of how many degrees?
• When shall risk of collision be deemed to exist?
• Two diamonds in a vertical line indicate the side to pass for which vessel?
• What must a stand-on vessel do when in immediate danger of collision?
• Which of the following correctly indicates a vessel not under command via lights?
• Which statement best describes overtaking under the Rules?
• A power-driven vessel shows the same lights as which other configuration?
• On open water, who is the stand-on vessel in a crossing situation between a fishing vessel and a sailing vessel?
• Which statement best identifies signaling for a vessel not under command?
• What is a vessel using a traffic separation scheme prohibited from doing?
• Which of these is NOT restricted in her ability to maneuver?
• Which of the following is not a factor in determining safe speed under COLREGs?
• Which statement best describes inland traffic patterns' influence on rule application?
• Which scenario best illustrates applying the 'avoid collision' obligation under the Rules?
• What should you do if you observe another vessel making irregular or dangerous maneuvers?
• Are there differences in how fog or restricted visibility signals are used on inland waterways compared to international rules?
• If there is an immediate danger of collision, what action should the stand-on vessel take?
• How should you operate in a narrow channel?
• Which factor is essential to consider when setting safe speed?
• A towing vessel 30 meters in length is pushing barges ahead. How many white masthead lights is the vessel required to show at night?
• COLREGs are primarily designed to
• What signal should you sound if you do not understand the course or intention of an approaching vessel?
• In inland navigation, how does the collision avoidance principle compare with sea navigation?
• What should you do if a collision risk cannot be avoided by maintaining course?
• Which activity qualifies a vessel as restricted in her ability to maneuver?
• In an overtaking scenario, what must the overtaking vessel do in relation to the other vessel?
• A vessel equipped with operational radar should?
• If a power-driven vessel sights a sailing vessel on its port bow, which is the stand-on vessel?
• When approaching a Traffic Separation Scheme, what general guidance should you follow?
• What should you do if you observe another vessel signaling distress?
• What is the main aim of COLREGs and associated practices?
• What is true concerning a vessel engaged in fishing?
• In complying with the Rules, due regard must include consideration of limited backing power, radar information, and which factor?
• How long is a 'prolonged blast' typically transmitted?
• Define 'risk of collision' in COLREGs.
• For a stand-on vessel to take action to avoid collision she shall, if possible, not ________.
• A power-driven vessel should yield to which types of vessels?
• A vessel performing mine clearance while underway is described as restricted in her ability to maneuver.
• A vessel laying pipeline while underway is classified as restricted in her ability to maneuver.
• Which statement concerning an overtaking situation is correct?
• What is the duration of a prolong blast?
• When two power-driven vessels are meeting head-on with risk of collision, what action must each take?
• Where should the anchor ball be displayed to signal an anchored vessel?
• When two power-driven vessels are crossing, the vessel with the other to starboard must keep out of the way under what condition?
• In inland waters, what color are lights on a fleet of moored barges extending into a navigable channel?
• How does radar assist in avoiding collisions?
• A law enforcement vessel patrolling a marine regatta may show either a flashing blue light or ________.
• Under International Rules, which vessel shall avoid impeding the safe passage of a vessel constrained by her draft?
• In dense traffic, which statement best describes signaling to communicate intent?
• Which statement about Inland vs International Rules is true?
• While underway and in sight of another vessel more than 0.5 miles away, you reverse engines to full astern. Which whistle signal is TRUE?
• In a crossing situation, which vessel is responsible for taking early action to avoid collision if necessary?
• What signaling is commonly used to indicate a vessel is altering course to port or starboard?
• A vessel being towed astern shall show ________.
• A vessel that is anchored and is at least 50 meters long must display which lights?
• Which light configuration indicates passing intentions internationally?
• Which fog signal is used when a vessel being tow ed is in fog?
• In an overtaking situation, what is the responsibility of the overtaking vessel?
• In a narrow channel, if another vessel is crossing your course from starboard to port and you do not think she will pass safely, you ________.
• In a Traffic Separation Scheme, vessels should:
• When a vessel is RAM (Restricted in Ability to Maneuver), how should other vessels typically respond?
• Good bridge resource management primarily improves what aspects to prevent collisions?
• Which statement is true about the light configuration for a vessel not under command?
• Which dayshape must a vessel being towed exhibit if the tow exceeds 200 meters?
• What requirement must be met for any action taken to avoid collision?
• In a crossing where a sailing vessel lies on your port side and you are operating a power-driven vessel, what is required of you?
• What must a vessel do if she fails to understand the intentions of an approaching vessel?
• Which vessel status indicates the vessel cannot maneuver as required?
• In fog, what defines a vessel as being 'in sight'?
• Which COLREGs status means a vessel is constrained by its draft?
• How is 'safe speed' defined under the Rules?
• In restricted visibility, what is the main purpose of sound signals?
• If you are approaching a vessel from directly behind at night, which light would you observe?
• Which statement about radar on a vessel is true?
• In a crossing situation, how should the stand-on vessel respond?
• What is the overarching objective of maritime navigation rules?
• What is a common general rule for speed in heavy traffic?
• In port approaches and busy waterways, what is the primary reason for adhering to signaling and right-of-way rules?
• How should you treat a vessel that is fishing?
• In inland navigation, a barge longer than 50 meters that is anchored in a special anchorage area must show how many white anchor lights?
• A vessel is 50 meters long and shows two anchor lights. Which statement is true?
• How does good bridge resource management assist in COLREGs compliance?
• When must dayshapes be shown?
• When is a vessel overtaking another relieved of her duty to keep clear?
• Two cones with apexes together indicate what type of vessel or operation?
• A vessel engaged in fishing during the day would show which day signal?
• What is AIS and why is it helpful for collision avoidance?
• In which situation would risk of collision definitely exist?