121 Colregs Midterm Quiz B 70

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  • 1/70 Questions

    Sidelights can be seen right ahead to 22,5 degrees abaft the beam

    • True
    • False
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Midterm Quizzes & Trivia
About This Quiz

This maritime navigation quiz assesses knowledge of the International Regulations for Preventing Collisions at Sea (COLREGs). It covers vessel light recognition, sound signals in restricted visibility, visibility ranges, and appropriate actions in navigational scenarios, crucial for safe maritime operations.

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  • 2. 

    You heard a gond sounded by a vessel at anchor, what is the lenght of the vessel using it

    • 120 meters

    • 70 meters

    • 36 meters

    • 96 meters

    Correct Answer
    A. 120 meters
    Explanation
    The length of the vessel can be determined by the length of the sound wave produced by the gond. Since the sound of the gond reached the listener, it means that the length of the sound wave is equal to the distance between the listener and the vessel. Therefore, the length of the vessel is 120 meters.

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  • 3. 

    What day shape is to be shown for a vessel constrained by draft making watc

    • Black cylinder

    • Three black ball in vertical

    • Not required, considering its making way

    • Two black balls in vertical

    Correct Answer
    A. Black cylinder
    Explanation
    A vessel constrained by draft making way is required to display a black cylinder day shape. This day shape indicates to other vessels that the vessel has restricted maneuverability due to its draft and is unable to deviate from its course. The black cylinder is easily recognizable and helps other vessels to take necessary precautions while navigating near the constrained vessel.

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  • 4. 

    Which statement is true concerning a 100 meters power driven vessel under way at night

    • She must exhibit only the aft masthead light

    • She must exhibit the forward and aft masthead light

    • She must exhibit an all round white light

    • She must exhibit a day shape

    Correct Answer
    A. She must exhibit the forward and aft masthead light
    Explanation
    A 100 meters power driven vessel under way at night must exhibit the forward and aft masthead light. This is because according to international maritime regulations, vessels over 50 meters in length are required to display both the forward and aft masthead lights to indicate their position and direction of travel. The forward masthead light is a white light displayed at the front of the vessel, while the aft masthead light is also a white light displayed at the rear. These lights help other vessels determine the size, direction, and position of the vessel, ensuring safe navigation at night.

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  • 5. 

    In restricted visibility alteration of course to port should be avoided but it does not include for a vessel to be overtaken

    • True

    • False

    Correct Answer
    A. True
    Explanation
    In restricted visibility, when a vessel's ability to see and be seen is limited, it is important to avoid altering course to port (left) as it could potentially lead to a collision. However, this rule does not apply to a vessel that is being overtaken by another vessel. Therefore, the statement is true.

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  • 6. 

    How long is the interval between sound signals in restricted visibility

    • 2 seconds

    • Not more than 2 seconds

    • Not more than 2 minutes

    • 4 to 6 minutes

    Correct Answer
    A. Not more than 2 minutes
    Explanation
    In restricted visibility, such as in fog or heavy rain, it is important for vessels to signal their presence to avoid collisions. The interval between sound signals is not more than 2 minutes. This means that vessels are required to sound their horn or whistle at least once every 2 minutes to alert other vessels of their presence. This helps to ensure that other vessels can take appropriate action to avoid a collision in the limited visibility conditions.

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  • 7. 

    What is the characteristic of a yellow light

    • Arc of visibility is 112.5 degrees

    • 120 or more flashes per minute

    • Same as stern light

    • White light, visible at 135 degrees

    Correct Answer
    A. Same as stern light
    Explanation
    A yellow light has the same characteristic as a stern light. This means that it is a light that is visible from behind a vessel, indicating its position and direction of travel.

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  • 8. 

    The lights to be displayed by a vessel aground are N.U.C. and anchor lights on specified lenght

    • True

    • False

    Correct Answer
    A. True
    Explanation
    A vessel aground is a vessel that has run aground or is stuck on the bottom of a body of water. When a vessel is aground, it is required to display certain lights to indicate its status and to warn other vessels of its presence. The lights that a vessel aground should display are the N.U.C. (Not Under Command) lights and the anchor lights. The N.U.C. lights indicate that the vessel is unable to maneuver due to exceptional circumstances, such as being aground. The anchor lights are displayed to indicate that the vessel is not underway and is stationary. Therefore, the statement that the lights to be displayed by a vessel aground are N.U.C. and anchor lights on specified length is true.

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  • 9. 

    A dredger of 150 meters in lenght is required to sound a gong aft when aground in restricted visibility

    • True

    • False

    Correct Answer
    A. True
    Explanation
    In restricted visibility, it is important for a dredger to sound a gong aft when aground. This is to alert other vessels of its presence and to prevent any potential collisions. The length of the dredger, in this case, is mentioned to emphasize the importance of sounding the gong aft, as it indicates that the vessel is large and may pose a greater risk to other vessels if not properly signaled. Therefore, the statement is true.

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  • 10. 

    While underway by day, navigational lights must be displayed on your vessel

    • During all period of reduced visibility

    • Not necessary

    • Only when other vessels are in the area

    • At night only when vessels are detected by radar

    Correct Answer
    A. During all period of reduced visibility
    Explanation
    During periods of reduced visibility, such as fog or heavy rain, it is crucial to display navigational lights on your vessel. These lights help other vessels to identify and avoid your boat, preventing collisions. Navigational lights are especially important during the day when visibility is already reduced, as they enhance your vessel's visibility and increase safety on the water. Therefore, it is necessary to display navigational lights during all periods of reduced visibility.

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  • 11. 

    A vessel of 12 meters or more but less than 20 meters in length has its all round light visible at the range of 2 miles

    • True

    • False

    Correct Answer
    A. True
    Explanation
    A vessel that is between 12 and 20 meters in length is required to have an all-round light that is visible at a range of 2 miles. This means that other vessels or observers will be able to see the light from the vessel from a distance of 2 miles or less, indicating the presence and position of the vessel. Therefore, the statement is true.

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  • 12. 

    In restricted visibility you heard a sound signal of one long blast followed by four short blasts, what type of vessel she is

    • Power driven vessel

    • Pilot vessel

    • Not under command vessel

    • Restricted ability to maneuver vessel

    Correct Answer
    A. Pilot vessel
    Explanation
    A vessel that emits a sound signal of one long blast followed by four short blasts is identified as a pilot vessel. Pilot vessels are responsible for guiding larger ships in and out of ports or other restricted areas. The specific sound signal is used to indicate their presence and communicate with other vessels in restricted visibility conditions.

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  • 13. 

    As officer on watch, what sound signal would be sounded if you are underway but stopped on the water

    • 1 long blast

    • 2 long blasts

    • 1 short blast

    • 1 long, 2 short blasts

    Correct Answer
    A. 2 long blasts
    Explanation
    When a vessel is underway but stopped on the water, it indicates that the vessel is not moving but is still in operation. In this situation, the appropriate sound signal to be sounded is 2 long blasts. This signal is used to indicate that the vessel is not under command and is unable to maneuver as required by the International Regulations for Preventing Collisions at Sea (COLREGS). By sounding 2 long blasts, the vessel alerts other vessels in the vicinity about its limited ability to maneuver and warns them to take necessary actions to avoid a collision.

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  • 14. 

    A cone apex upward aft of the fishing vessel engaged in trawling is an indicator that the outlying gear extends more than 150 meters

    • True

    • False

    Correct Answer
    A. True
    Explanation
    If a cone is placed apex upward aft of a fishing vessel engaged in trawling, it indicates that the outlying gear, such as nets or lines, extends more than 150 meters. This is because the cone serves as a visual signal to other vessels that the fishing gear is extended and caution should be taken to avoid entanglement. Therefore, the statement is true.

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  • 15. 

    You are a power driven vessel and towing another vessel, what lights can be seen from your stern

    • Yellow light

    • White over yellow light

    • Yellow light over white light

    • White light

    Correct Answer
    A. Yellow light over white light
    Explanation
    When a power-driven vessel is towing another vessel, it must display a yellow light over a white light from its stern. The yellow light indicates that it is towing, while the white light is the standard stern light for a power-driven vessel. This configuration informs other vessels that the vessel is both power-driven and towing another vessel, allowing them to take appropriate action to avoid a collision.

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  • 16. 

    The lenght of your vessel is 108 meters, what is the visibility of the masthead light

    • 1 mile

    • 2 miles

    • 5 miles

    • 6 miles

    Correct Answer
    A. 6 miles
  • 17. 

    What is the range of visibility of the side lights for a vessel 8 meters in lenght

    • 3 miles

    • 2 miles

    • 1 mile

    • 0.5 miles

    Correct Answer
    A. 1 mile
    Explanation
    The range of visibility for the side lights of a vessel is determined by its length. In this case, since the vessel is 8 meters in length, the range of visibility for its side lights is 1 mile. This means that other vessels or objects in the vicinity can see the side lights of this vessel from a distance of up to 1 mile.

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  • 18. 

    You are a power driven vessel in restricted visibility underway but stopped on the water, what appropriate sound signals you should be sounded

    • 1 long blast

    • 2 long blasts

    • 1 long 2 short blasts

    • 4 short blasts

    Correct Answer
    A. 2 long blasts
    Explanation
    When a power-driven vessel is underway but stopped on the water in restricted visibility, it should sound two long blasts as the appropriate sound signal. This signal is used to indicate that the vessel is not moving and is at anchor or aground. It alerts other vessels in the vicinity to exercise caution and avoid any potential collision.

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  • 19. 

    A sailing vessel showing a cone apex down was observed from your port bow on a crossing situation, choose the best action to be done

    • Maintain course and speed as stand on vessel

    • Apply rule 18 for sailing vessel

    • Alter course to starboard as stand on vessel

    • Give way as she is a sailing vessel

    Correct Answer
    A. Maintain course and speed as stand on vessel
    Explanation
    In this situation, the correct action is to maintain course and speed as the stand-on vessel. According to the International Regulations for Preventing Collisions at Sea (COLREGS), the vessel showing a cone apex down is a sailing vessel. As the stand-on vessel, you have the right of way and should maintain your course and speed to allow the other vessel to maneuver and pass safely.

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  • 20. 

    A vessel of less than 12 meters engages in diving operation is required to exhibit the lights and shape prescribed in rule 27

    • True

    • False

    Correct Answer
    A. True
    Explanation
    A vessel of less than 12 meters engaging in diving operations is required to display the lights and shape as specified in rule 27. This rule is in place to ensure the safety of the vessel and its occupants, as well as to notify other vessels in the area of the diving operations taking place. By displaying the appropriate lights and shape, other vessels can take the necessary precautions and avoid any potential accidents or collisions. Therefore, the statement is true.

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  • 21. 

    What type of vessel exhibit a yellow light with the same characteristics as stern light in addition to the navigational lights

    • Tugboat

    • Any vessel able to tow

    • Power driven vessel

    • Non displacement craft

    Correct Answer
    A. Any vessel able to tow
    Explanation
    Any vessel that is able to tow other vessels would exhibit a yellow light with the same characteristics as a stern light in addition to the navigational lights. This is important for other vessels to recognize that the vessel is engaged in towing operations and to take appropriate action to avoid collision.

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  • 22. 

    Who will display the towing diamond between the towing vessel and a vessel being towed if the tow is more than 200 meters

    • Both the tug and tow

    • The tug only

    • The tow only

    • Any of them

    Correct Answer
    A. Both the tug and tow
    Explanation
    The correct answer is both the tug and tow. When a tow is more than 200 meters, it is required for both the towing vessel (tug) and the vessel being towed to display the towing diamond. This diamond-shaped sign helps other vessels to identify that there is a tow in progress and take necessary precautions to avoid any collisions or accidents. By displaying the towing diamond, both the tug and tow ensure that they are visible to other vessels in the vicinity.

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  • 23. 

    The rules concerning anchored vessel is best explained on what rule

    • Rule 30

    • Rule 32

    • Rule 31

    • Rule 22

    Correct Answer
    A. Rule 30
    Explanation
    Rule 30 of the International Regulations for Preventing Collisions at Sea (COLREGS) specifically addresses the rules concerning anchored vessels. This rule outlines the actions that should be taken by both the anchored vessel and other vessels approaching it. It covers aspects such as the visibility of the anchor lights, the distance at which other vessels should keep from the anchored vessel, and the actions to be taken in case of potential collision. Therefore, Rule 30 is the most appropriate rule to refer to when seeking information about the rules concerning anchored vessels.

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  • 24. 

    A towing yellow light will be carried above a vessel's stern light

    • Only if she is towing astern

    • Only if the tow exceeds 200 meters

    • At anytime when towing

    • If the towing vessel is restricted her ability to maneuver

    Correct Answer
    A. At anytime when towing
    Explanation
    A towing yellow light will be carried above a vessel's stern light at anytime when towing. This means that whenever a vessel is engaged in towing another vessel or object, it must display a yellow light above its stern light. This is to alert other vessels in the vicinity that the vessel is towing and may have limited maneuverability. The presence of the towing yellow light helps to ensure the safety of both the towing vessel and other vessels in the area.

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  • 25. 

    A vessel engaged in diving operation shall exhibit the prescribed lights and shape for a vessel of any length

    • True

    • False

    Correct Answer
    A. True
    Explanation
    A vessel engaged in diving operations is required to display the prescribed lights and shape for a vessel of any length. This is important for the safety of other vessels in the vicinity, as it allows them to easily identify the diving vessel and take appropriate precautions to avoid any potential collisions or accidents. Displaying the correct lights and shape helps to ensure clear communication and awareness among all vessels in the area, reducing the risk of accidents and promoting safe diving operations.

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  • 26. 

    A mine clearance vessel shall exhibit an anchor light even when she is on duty at anchor

    • True

    • False

    Correct Answer
    A. True
    Explanation
    A mine clearance vessel is required to exhibit an anchor light even when it is on duty at anchor. This is because the anchor light helps other vessels in the vicinity to identify the position of the mine clearance vessel and take necessary precautions to avoid any potential danger. The anchor light is a safety measure that ensures the visibility of the vessel, even when it is stationary at anchor, to prevent any accidental collisions or mishaps.

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  • 27. 

    Using your binocular you observed a vessel forward of your beam showing a black cone apex up, what type of vessel she is

    • Power driven vessel

    • Sailing vessel propelled by machinery

    • Towing vessel

    • Vessel engaged in fishing

    Correct Answer
    A. Vessel engaged in fishing
    Explanation
    The vessel showing a black cone apex up forward of your beam is most likely a vessel engaged in fishing. This is because vessels engaged in fishing are required to display a black cone apex up during daylight hours to indicate their activity. This cone-shaped signal helps other vessels identify and navigate around them safely.

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  • 28. 

    A vessel not under command shall exhibit a masthead light when she is underway and making way

    • True

    • False

    Correct Answer
    A. False
    Explanation
    A vessel not under command is a vessel that is unable to maneuver as required by the International Regulations for Preventing Collisions at Sea. According to these regulations, a vessel not under command should exhibit two masthead lights in a vertical line when underway and making way. Therefore, the given statement is false.

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  • 29. 

    In a sailing vessel of more than 20 meters, a red over green all around light shall be exhibited below the masthead light

    • True

    • False

    Correct Answer
    A. False
    Explanation
    In a sailing vessel of more than 20 meters, a red over green all around light is not required to be exhibited below the masthead light. The International Regulations for Preventing Collisions at Sea (COLREGs) specify that a sailing vessel of more than 20 meters should exhibit a red over green light only when it is being overtaken by another vessel. Otherwise, it should display a single all-around white light. Therefore, the correct answer is False.

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  • 30. 

    From your radar position you are 1 mile from the other vessel and her side lights is visible, what is the approximate lenght of the vessel

    • Less than 12 meters

    • 20 to 50 meters

    • 50 meters or more

    • No specified lenght

    Correct Answer
    A. No specified lenght
    Explanation
    The question states that the side lights of the other vessel are visible from a distance of 1 mile. However, it does not provide any information about the length of the vessel. Therefore, the correct answer is that there is no specified length for the vessel.

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  • 31. 

    What will be the sound signal of a tugboat without a tow

    • One long blast followed by 2 short blasts

    • One long blast followed by 3 short blasts

    • One long blast

    • 3 short blasts

    Correct Answer
    A. One long blast
    Explanation
    A tugboat without a tow will produce a sound signal of one long blast. This signal is used to indicate that the tugboat is not towing any vessels or objects.

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  • 32. 

    Which vessel is a stand on vessel between two vessels crossing in fog and not in sight of one another

    • The vessel which has the other on her own starboard side

    • Neither vessel is the stand on vessel

    • The vessel which has the other on her port side

    • The one who hears th fog signal first

    Correct Answer
    A. Neither vessel is the stand on vessel
    Explanation
    In this situation, neither vessel is considered the stand on vessel. When two vessels are crossing in fog and not in sight of one another, both vessels are required to take action to avoid a collision. They should both alter their course and speed to avoid any potential collision. Therefore, neither vessel has the right of way or is considered the stand on vessel.

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  • 33. 

    You are a vessel having a length of 27 meters, what is the range of visibility of the stern light

    • 5 miles

    • 3 miles

    • 2 miles

    • 1 mile

    Correct Answer
    A. 2 miles
    Explanation
    The range of visibility of the stern light on a vessel is determined by regulations and is typically limited to a certain distance to ensure the safety of other vessels. In this case, the correct answer is 2 miles, meaning that the stern light on the vessel can be seen from a distance of up to 2 miles by other vessels.

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  • 34. 

    You are a vessel aground, what additional signal shall be sounded to distinguish you from an achored vessel

    • 3 strikes on the gong after 3 strikes on the bell

    • One long blast on the whistle followed by a bell for 5 seconds

    • 3 strikes before and after a rapid ringing of the bell

    • Bell for 5 seconds forward and 5 seconds by gong aft

    Correct Answer
    A. 3 strikes before and after a rapid ringing of the bell
    Explanation
    When a vessel is aground, it is important to distinguish it from an anchored vessel. The additional signal that should be sounded in this situation is 3 strikes before and after a rapid ringing of the bell. This combination of signals helps to clearly indicate that the vessel is aground and not simply anchored.

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  • 35. 

    You are asked by your duty officer to switch on your lights, how many lights in all will be visible if your vessel is N.U.C. underway and making way night, you are 112 meters in lenght

    • 4 lights

    • 5 lights

    • 6 lights

    • Only the sidelights

    Correct Answer
    A. 5 lights
    Explanation
    If the vessel is N.U.C. (Not Under Command) and making way at night, a total of 5 lights will be visible. These lights include the sidelights (red and green), the stern light (white), the masthead light (white), and the towing light (yellow).

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  • 36. 

    Which vessel shows the same ights signal when underway or at anchor

    • Vessel engaged in fishing

    • A vessel constrain by draft

    • R.A.M.

    • N.U.C.

    Correct Answer
    A. Vessel engaged in fishing
    Explanation
    A vessel engaged in fishing shows the same lights signal when underway or at anchor because it is required to display the same lights regardless of its status. This is to ensure the safety of other vessels in the vicinity and to communicate its presence and activities effectively. The lights signal for a vessel engaged in fishing includes a white masthead light, a white stern light, and two all-round red lights. These lights are displayed both when the vessel is underway and when it is at anchor, distinguishing it from other types of vessels.

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  • 37. 

    in towing vessel, a black diamond shall be exhibited by the tug and tow if the lenght of tow is 150 meters

    • True

    • False

    Correct Answer
    A. False
    Explanation
    In towing operations, a black diamond is not required to be exhibited by the tug and tow when the length of the tow is 150 meters. Therefore, the statement is false.

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  • 38. 

    When two vessels are insight of one another and green lights are visible from each other, they are both considered as give way vessels

    • True

    • False

    Correct Answer
    A. True
    Explanation
    When two vessels are within sight of each other and green lights are visible from each other, it means that both vessels are approaching each other from different directions. In this situation, both vessels are considered as give way vessels, meaning they must yield the right of way to each other and take necessary actions to avoid a collision. This is because green lights indicate that the vessels are starboard side to starboard side, which requires both vessels to give way to avoid a potential collision. Therefore, the statement is true.

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  • 39. 

    A pilot vessel when underway shall exhibit a white masthead light in addition to the white over red on its mast

    • True

    • False

    Correct Answer
    A. False
    Explanation
    A pilot vessel when underway is required to exhibit a white masthead light and a red over white light on its mast. This combination of lights helps other vessels identify the pilot vessel and understand its role and position. The white masthead light alone is not sufficient and does not meet the requirements for a pilot vessel underway. Therefore, the given statement is false.

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  • 40. 

    You intend to overtake on the other vessel's port side, the sound signal shall be 1 long and 2 short blasts

    • True

    • False

    Correct Answer
    A. False
    Explanation
    When intending to overtake on the other vessel's port side, the correct sound signal should be 2 long and 1 short blasts, not 1 long and 2 short blasts. This is important for communication and avoiding any potential collisions or confusion between the vessels.

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  • 41. 

    Combined lantern can be placed on either side of the vessel less than 20 meters

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The statement suggests that a combined lantern can be placed on either side of the vessel, as long as it is less than 20 meters away. However, this is incorrect. According to maritime regulations, a combined lantern should be placed at the centerline of the vessel and not on either side. Therefore, the correct answer is False.

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  • 42. 

    You are heading due north and observed a vessel's green light on your port beam, the vessel may be heading

    • Northward

    • Southward

    • Eastward

    • Westward

    Correct Answer
    A. Northward
    Explanation
    If you are heading due north and you observe a vessel's green light on your port beam, it means that the vessel is on your left side. Since the green light is on the left side of a vessel, it indicates that the vessel is heading in the same direction as you, which is northward.

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  • 43. 

    A cone apex downward indicates any fishing vessel engaged in fishing with outlying gear extend more than 150 meters

    • True

    • False

    Correct Answer
    A. False
    Explanation
    A cone apex downward does not indicate that a fishing vessel is engaged in fishing with outlying gear extending more than 150 meters. The statement is false because a cone apex downward is actually used to indicate that a vessel is restricted in its ability to maneuver.

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  • 44. 

    What are the lights to be shown by a vessel towing a barge alongside

    • Same as power driven vessel

    • Same as vessel towing of its length

    • Three aft masthead lights in vertical

    • A yellow tow light at the mast

    Correct Answer
    A. Same as vessel towing of its length
    Explanation
    A vessel towing a barge alongside is required to display the same lights as a vessel towing of its length. This means that it should display the required navigation lights, such as red and green sidelights, a white stern light, and a yellow towing light at the mast. These lights are necessary to indicate the vessel's position, direction, and the fact that it is engaged in towing operations.

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  • 45. 

    At what lenght does a vessel aground not required to sound the appropriate signal for vessel aground

    • Less than 12 meters

    • More than 12 meters but less than 50 meters

    • Less than 7 meters

    • Less than 50 meters

    Correct Answer
    A. Less than 12 meters
    Explanation
    According to international regulations, a vessel aground is not required to sound the appropriate signal if it is less than 12 meters in length. This means that smaller vessels, such as small boats or dinghies, do not need to sound any signals when they run aground. However, larger vessels over 12 meters in length are required to sound the appropriate signals to alert other vessels of their situation.

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  • 46. 

    Rule 35 applies to the maneuvering signals of vessel in sight of one another

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Rule 35 of the International Regulations for Preventing Collisions at Sea (COLREGs) actually applies to sound signals, not maneuvering signals. It specifies the sound signals that vessels should use in various situations, such as when approaching a bend or when in restricted visibility. Therefore, the statement that Rule 35 applies to the maneuvering signals of vessels in sight of one another is incorrect.

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  • 47. 

    A sailing vessel more than 20 meters underway at night, shall exhibit the following lights

    • White mast head light, side lights, stern light

    • All round white light on its mast, side light, stern light

    • Red over green on the mast, side light, stern light

    • Red over green on the mast below the masthead light, side lights, stern light

    Correct Answer
    A. Red over green on the mast, side light, stern light
    Explanation
    A sailing vessel more than 20 meters underway at night shall exhibit red over green lights on the mast, side lights, and stern light. This combination of lights helps other vessels determine the size and type of the sailing vessel and its direction of travel. The red over green lights indicate that the sailing vessel is a sailing vessel and not a power-driven vessel. The side lights and stern light ensure that the sailing vessel is visible from all angles, allowing other vessels to navigate safely around it.

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  • 48. 

    What is the appropriate sound signal to be sounded by a sea plane in restricted visibility

    • 1 long blast

    • 1 long 2 short blasts

    • 2 long blasts

    • None of the above

    Correct Answer
    A. None of the above
    Explanation
    In restricted visibility, a sea plane should sound a continuous horn or siren to alert other vessels of its presence. This is not represented by any of the options given, so the correct answer is "none of the above".

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  • 49. 

    Which of the following best describe a sailing vessel less than 20 meters

    • A red over green light near the top of the mast

    • A red over green below the combine lantern

    • A side light and an all around white light on the top of mast

    • A combined lantern near the top of the mast

    Correct Answer
    A. A combined lantern near the top of the mast
    Explanation
    A sailing vessel less than 20 meters is best described by having a combined lantern near the top of the mast. This means that the vessel has a single lantern that combines both the red and green sidelights, which are required for vessels under 20 meters according to international maritime regulations. The combined lantern allows other vessels to easily identify the sailing vessel and determine its direction of travel at night or in low visibility conditions.

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  • Mar 21, 2023
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  • Dec 24, 2011
    Quiz Created by
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