Do You Know About The Seas And Vessels? Take This Quiz!

The vessel displaying two cones with their points apexes together is engaged in fishing. This is because the International Regulations for Preventing Collisions at Sea (COLREGs) specify that a vessel engaged in fishing must display two cones in a vertical line with their apexes together. This signal alerts other vessels to the fact that there are fishing operations taking place and they need to navigate with caution to avoid interfering with the fishing vessel's gear.

When a vessel is engaged in underwater operations and there is an obstruction on its port side, it will be marked by two red lights in a vertical line. This is a common practice to indicate the presence of an obstruction or danger to other vessels in the vicinity. The vertical arrangement of the lights helps in distinguishing them from other types of lights and provides a clear indication of the obstruction's location.

The correct answer is 2 black cones apex together. This is because according to the International Regulations for Preventing Collisions at Sea (COLREGs), a vessel that is underway and fishing with nets or lines during the day should display 2 black cones apex together. This signal indicates to other vessels that the fishing vessel has restricted maneuverability and that other vessels should keep clear to avoid any potential collisions.

A vessel aground refers to a ship that is stranded or stuck on the ground or a shoal. In this context, three black balls in a vertical line are used as a signal to indicate that a vessel is aground. This signal is used to warn other ships in the vicinity about the presence of a stranded vessel and to ensure that they take appropriate action to avoid any potential collision or danger.

The sound signal for a vessel operating in astern propulsion is three short blasts. This signal is used to indicate that the vessel is moving in the opposite direction, or going astern. It is an important signal for other vessels in the vicinity to be aware of the vessel's movement and take appropriate action to avoid any potential collisions.

According to the navigation rules, a masthead light is designed to be visible through an arc of 225 degrees. This means that the light can be seen from the front of the vessel to a point slightly behind it, covering a wide range of visibility. This is important for other vessels to determine the position and heading of the vessel displaying the masthead light, ensuring safe navigation and avoiding collisions.

The yellow light of the towing vessel is placed above the stern light when the vessel is towing astern.

A vessel not under command is indicated by two all round red lights displayed in a vertical line. This means that the vessel is unable to maneuver as required by the international rules of navigation and is therefore a hazard to other vessels. This could be due to a mechanical failure or any other circumstance that renders the vessel unable to control its movements.

A vessel engaged in trawling is required to display a green over a white light. This is to indicate to other vessels in the vicinity that the vessel is engaged in fishing activities and has fishing gear in the water. The green light signifies the starboard (right) side of the vessel, while the white light indicates the vessel's presence. This helps other vessels to navigate safely around the trawling vessel and avoid any potential collisions.

The two all round red lights in a vertical line, exhibited by the vessel engaged in dredging, indicate the side on which the obstruction exists. This is important information for other vessels to know in order to navigate safely around the dredging vessel and avoid the obstruction. The red lights serve as a clear visual signal to indicate the presence of the obstruction and the side on which it is located.

A towing vessel that is 35 meters in length and has a tow 100 meters astern must show a minimum of two masthead lights. This is because according to maritime regulations, a towing vessel must display two masthead lights when it is towing another vessel or object. These lights indicate to other vessels in the vicinity that the vessel is engaged in towing operations and helps ensure safe navigation and avoidance of collisions.

A vessel engaged in pilotage duty is required to display two all-round lights in a vertical line, with the upper light being white and the lower light being red. This helps other vessels identify the pilot vessel and understand its role in guiding ships through narrow or difficult channels. The lights signal that the vessel is actively involved in providing navigation assistance to other ships, ensuring safe passage through challenging areas.

When a vessel is being towed astern, it is required to display a day shape to indicate its status. In this case, if the length of the tow exceeds 200 meters, the day shape displayed will be a diamond shape. This shape is chosen because it provides the best visibility and can be easily recognized by other vessels. Therefore, the correct answer is "a diamond shape where it can best be seen."

The two balls in a vertical line on the port side of the dredge indicate that there is an obstruction on the port side of the vessel. This means that there is something blocking the path or creating a hazard on the left side of the dredge. It is important for approaching vessels to be aware of this obstruction and take necessary precautions to avoid any potential collision or damage.

A 50 meters power driven vessel must exhibit forward and after masthead lights when underway. This is because according to international regulations, vessels over a certain length are required to display specific lights to ensure their visibility and to indicate their size and type to other vessels. The forward and after masthead lights are part of the lighting configuration for power driven vessels over a certain length, and they help other vessels determine the size and direction of the vessel.

A vessel that is constrained by its draught (the depth of water it requires to safely navigate) must exhibit three all-round red lights in a vertical line. This indicates to other vessels that the constrained vessel is unable to deviate from its course and may require extra space to maneuver. The red lights are easily visible and help other vessels to identify and navigate around the constrained vessel safely.

A sailing vessel that is also propelled by machinery must exhibit a cone apex downward. This is because the International Regulations for Preventing Collisions at Sea (COLREGS) require vessels that are both sailing and using machinery to display a cone apex downward during the day. This signal indicates to other vessels that the sailing vessel is also using its machinery for propulsion.

When fishing with gear out on the high seas while at anchor, it is important to display a red light over a white light. This combination of lights indicates to other vessels that you are engaged in fishing activities and are stationary. The red light helps other boats to identify your position and avoid colliding with you, while the white light provides general visibility. By showing a red light over a white light, you are following the proper protocol for indicating your presence and ensuring safety on the water.

A vessel proceeding under sail and also being propelled by machinery should exhibit a conical shape with the apex downward. This is to indicate to other vessels that it is both under sail and using machinery for propulsion. By displaying this shape, it helps other vessels determine the vessel's speed and maneuverability, allowing them to take appropriate action to avoid any potential collisions.

A vessel not under command making way at night would show two all round red lights in a vertical line, sidelights, and a stern light. This is because a vessel not under command is unable to maneuver as required by the International Regulations for Preventing Collisions at Sea (COLREGS). The all round red lights in a vertical line indicate that the vessel is not under command, while the sidelights and stern light are required for navigation and to indicate the vessel's direction and presence to other vessels. The combination of these lights helps ensure the safety and visibility of the vessel at night.

A vessel aground is a vessel that is stuck or stranded on the ground or a reef. According to the International Regulations for Preventing Collisions at Sea (COLREGs), a vessel aground should exhibit the dayshape of three black balls. This is to indicate to other vessels that the vessel is not under command and is unable to maneuver. The three black balls serve as a warning to other vessels to keep a safe distance and take necessary precautions to avoid a collision.

The vessel showing an all round light on the bow and on the stern, together with two red lights in a vertical line, indicates that it is aground. This is because the all round light on the bow and stern are required when a vessel is not making way, and the two red lights in a vertical line are used to indicate a vessel that is not under command. Therefore, the combination of these lights suggests that the vessel is stuck or grounded and unable to move.

The correct answer is "aground". When a vessel is aground, it means that it is resting on the bottom of the body of water, such as a river or sea floor. In this situation, the vessel is not moving and is stuck in a fixed position. This allows the three black balls to be visible in a vertical line, as the vessel is not affected by any movement or current. Anchored and constrained by her draft do not necessarily imply that the vessel is stationary or stuck, so they are not the best options.

A power driven vessel shows the same light as a pushing vessel and a vessel being pushed are rigidly connected in a composite unit. This means that when a power driven vessel is pushing another vessel and they are connected together as one unit, they are required to display the same lights as a single vessel. This is to indicate to other vessels that they are a single unit and should be treated as such when it comes to navigation and right of way.

A towing vessel that is unable to deviate from her course should show the same shapes as the vessel R.A.M. This means that during the day, the towing vessel should display the same shapes (such as balls, diamonds, squares, etc.) as the Restricted in Ability to Maneuver (R.A.M.) vessel. This is important for other vessels to be aware of the towing vessel's restricted maneuverability and take appropriate action to avoid any potential collisions or accidents.

When a vessel is "underway and making way," it means that it is in motion and actively propelling through the water. In this situation, it is necessary for the vessel to display sidelights and a sternlight. Sidelights are required to be visible from ahead to 22.5 degrees abaft the beam on both sides of the vessel, while the sternlight should be visible from astern to 67.5 degrees on both sides. These lights help other vessels determine the direction and position of the moving vessel, ensuring safe navigation and preventing collisions.

In any condition of visibility, a danger signal may be sounded. This means that regardless of whether the visibility is clear, in fog, or even in zero visibility, a danger signal can be used to alert others of potential danger. This emphasizes the importance of using warning signals to ensure the safety of individuals in various visibility conditions.

According to the International Regulations for Preventing Collisions at Sea (COLREGs), a vessel towing another vessel astern should display three masthead lights at night. One masthead light is displayed on the towed vessel, and two masthead lights are displayed on the towing vessel. Therefore, the correct answer is 3.

The three all-round green lights at or near the foremast head and attach end of the foreyard indicate that it is dangerous for another vessel to approach within 1000 meters from this vessel.

A pilot vessel on pilotage duty at night will show sidelights and a sternlight at anytime when underway. This is because when a pilot vessel is underway, regardless of the time of day, it is required to display the appropriate navigation lights to indicate its position and direction of travel. Sidelights are displayed on the port (red) and starboard (green) sides of the vessel, while the sternlight is displayed at the rear. These lights help other vessels in the vicinity to determine the pilot vessel's position and take necessary actions to avoid collision.

A vessel engaged in fishing must display a white light in the direction of any gear that extends outward more than 150 meters. This is to ensure that other vessels can see and avoid the fishing gear, reducing the risk of collision. White lights are commonly used to indicate the presence of a vessel, and in this case, it is specifically used to indicate the location of fishing gear.

When a vessel is approaching a bend or narrow channel, it should sound one prolonged blast. This is a signal to other vessels in the area that the vessel intends to navigate the bend or channel and is requesting right-of-way or warning them of its presence. The prolonged blast is a continuous sound that lasts for a duration of 4-6 seconds. By sounding this signal, the vessel is ensuring safe navigation and communication with other vessels in the vicinity.

An anchored vessel is required to show a white light both forward and aft in order to indicate its position to other vessels. The minimum length of the vessel needed to display these lights is 50 meters. This length ensures that the lights are visible from a sufficient distance to warn other vessels of the anchored vessel's presence and prevent any potential collisions.

When a pushing vessel and a vessel being pushed ahead are rigidly connected in a composite unit, they shall exhibit the lights for a Pushing Vessel (P.D.V). This means that both vessels will display the appropriate lights indicating that they are a composite unit engaged in pushing operations. This is important for other vessels to be able to identify and navigate safely around the composite unit.

The masthead light of a vessel less than 12 meters in length should be visible at 2 nautical miles. This is in accordance with the International Regulations for Preventing Collisions at Sea (COLREGS), which state that vessels less than 12 meters in length should have a masthead light that is visible for at least 2 nautical miles. This ensures that other vessels can see and identify the smaller vessel from a reasonable distance, promoting safety and preventing collisions at sea.

The fog signal should be sounded at intervals of not more than 2 minutes. This means that the fog signal should be sounded every 2 minutes or less, ensuring that it is regularly and frequently heard to alert other vessels in foggy conditions. Sounding the fog signal at shorter intervals helps to improve visibility and reduce the risk of collisions by providing timely and consistent warnings to nearby vessels.

When you are on restricted visibility and hear a fog signal forward of your beam, it means that there is a potential danger nearby that you cannot see on your radar screen. In this situation, the rules require you to slow down to bare steerage way. This means reducing your speed to the minimum level that allows you to maintain control and maneuverability of the vessel. By doing so, you can navigate cautiously and be prepared to take immediate action if necessary to avoid any collision or accident.

The minimum sound signaling equipment required aboard a vessel 14 meters in length is a whistle only. This is because vessels between 12 and 20 meters in length are only required to have a whistle as their sound signaling equipment according to international regulations. A bell is not required for vessels of this length. A gong is also not mentioned as a mandatory requirement for vessels of this size.

A dredger is not required to exhibit an anchor light because it is a vessel that is used for excavation and clearing of sediments from the bottom of water bodies, typically rivers or harbors. Dredgers are stationary or slow-moving vessels that do not pose a navigational hazard to other vessels, unlike R.A.M. (Restricted in Ability to Maneuver) and N.U.C. (Not Under Command) vessels. Therefore, they are exempt from the requirement of displaying an anchor light. A pilot vessel, on the other hand, is required to exhibit an anchor light when it is at anchor.

Day shapes must be displayed during daylight hours in any visibility. This means that regardless of the visibility conditions, such as fog or mist, the day shapes should still be displayed during daylight hours. These shapes are used to indicate the status or characteristics of a vessel to other nearby vessels, and it is important for them to be visible even in low visibility conditions. Therefore, the correct answer is "during daylight hours in any visibility."

When backing out of a slip in international water and being seen by an approaching vessel, you would give three short blasts. This is a signal to indicate that you are operating in reverse and that the other vessel should proceed with caution. Giving three short blasts is a recognized sound signal for this specific situation and is meant to communicate your intentions and avoid any potential collisions.

Maritime navigation rules, often referred to as the "Rules of the Road" or COLREGs (International Regulations for Preventing Collisions at Sea), generally advise maintaining your course and speed to avoid sudden maneuvers that could confuse other vessels about your intentions. However, you should proceed with caution, be prepared to take evasive action if necessary, and continuously monitor the situation. Use additional sound signals and maintain a proper lookout by sight and hearing.

A vessel dredging would not be required to show an anchor light when anchored at night. This is because a vessel engaged in dredging operations is considered to be a "special purpose vessel" and is exempted from displaying an anchor light. Instead, it is required to display the appropriate lights and signals for its specific operation, such as dredging lights or shapes. These lights and signals are intended to inform other vessels of the vessel's restricted maneuverability and the nature of its work, ensuring safe navigation in the vicinity of the dredging operation.

The correct answer is 15 meters sailing vessel. A lantern combining the two sidelights of a vessel is typically shown on a vessel that is less than 20 meters in length. This lantern is used to indicate the presence and direction of a sailing vessel to other vessels in the vicinity. Therefore, a 15 meters sailing vessel would be the appropriate size for this type of lantern.

A vessel under oars is allowed to show the same lights as a sailing vessel. This means that it must display the appropriate navigation lights based on its size and maneuverability. These lights include a red and green sidelight, a white stern light, and a white masthead light. By showing these lights, the vessel ensures that it is visible to other vessels and can navigate safely at night or in restricted visibility conditions.

According to the International Regulations for Preventing Collisions at Sea (COLREGs), a sailing vessel of less than 20 meters in length may carry her sidelights and sternlight in one combined lantern carried at or near the top of the mast. This provision applies specifically to sailing vessels and not to power-driven vessels. Therefore, the correct answer is a 10 meter sailing vessel.

Vessels that are less than 12 meters in length, when aground, are not required to exhibit the lights prescribed in rule 30 d i and ii. This means that smaller vessels, which are less than 12 meters long, do not need to display specific lights when they are stranded on the ground. The lights mentioned in rule 30 d i and ii are only necessary for vessels that are larger than 12 meters in length.

When a vessel that does not normally engage in towing is towing a vessel in distress, it is not required to show the lights for a vessel engaged in towing if it is impractical to do so. This means that if it is not possible or safe for the vessel to display the towing lights, it is not obligated to do so. This exception allows for flexibility and prioritizes the safety of the vessels involved in the towing operation.

A deep draft vessel displays three red lights in a vertical line from sunset to sunrise. This signal indicates that the vessel has a large draft and requires sufficient water depth for safe navigation. The three red lights serve as a warning to other vessels to give way and avoid potential collisions.

A vessel trawling is required to show a masthead light abaft of and higher than her identifying lights. Trawling is a fishing method that involves dragging a net behind the vessel, and it is important for other vessels to be able to identify the trawling vessel and its position. By displaying a masthead light abaft of and higher than the identifying lights, the trawling vessel ensures that it is easily visible to other vessels and helps to prevent collisions at sea.