To stay safe on the water at night or at times of restricted visibility, you need to be able to recognise lights on other vessels. These lights help prevent collisions. Show
A vessel's navigation lights tell you:
Keep a lookout for lights that may not be bright, such as those on smaller vessels. These vessels may only display a single white light or a torch light. A single white light can also mean a vessel is at anchor, or travelling away from you. If you see a white light, be aware that something is ahead of you and prepare to take appropriate action. If you see a lot of lights, or lights up high, it's probably a large vessel, such as a ship or commercial fishing boat. Keep well clear. These are some examples of navigation lights you may see.
When you are in a power-driven pleasure craft and you see a red, a green, and a white light, you are approaching another power-driven vessel head-on and both vessels must give way.  Page 2
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When you are in a pleasure craft and you see a red and a green light but no white light, you are approaching a sailing vessel head-on and you must give way. Page 4
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When you are in a pleasure craft and you see only a green light, you may be approaching a sailing vessel and you must give way. A sailing vessel is always the stand-on vessel except when it is overtaking. Page 6
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When you are in a pleasure craft and you see only a red light, you may be approaching a sailing vessel and you must give way. A sailing vessel is always the stand-on vessel except when it is overtaking. Page 8
Sidelights: These red and green lights are called sidelights (also called combination lights) because they are visible to another vessel approaching from the side or head-on. View complete answer on quizlet.com What does a red and green light indicate when seen together at night quizlet?What do red and green lights on a sailboat indicate when seen together at night? It's a sailing vessel seen from the front.View complete answer on quizlet.com What does it mean when you see only a red and a green light on another boat?Give way to your starboard side. Powerboat A: When only red and green lights are visible, you are approaching a sailboat head-on. Give way to your starboard side.View complete answer on boaterexam.com When encountering another vessel in darkness and reduce visibility What do visible white red and green lights indicate?Powerboat A: When white, red, and green lights are all visible one is approaching a powered-vessel head on. One must give way to one's starboard side. Powerboat B: When white, red, and green lights are all visible, one is approaching a powered-vessel head on. One must give way to one's starboard side.View complete answer on boatersacademy.com What does it mean when you see green and white lights on another boat?Port (left) ApproachIf a green and a white light are visible, then another craft is approaching you from the port (left) side. In this situation, you are the stand-on craft and should maintain your speed and course. The other craft should take early and substantial action to steer well clear of your craft. View complete answer on boatsmartexam.com Why Red Rose appeares black in Green light I Colours of object I Vibrant Science IWhat should you do when you see red and white lights on another boat at night?If you're in a powerboat at night, and see another boat's red light and white light, but not the green light, you are generally in a “give-way” position. This means that you must slow, turn, stop, or make whatever other maneuver is necessary to stay out of that boat's way.View complete answer on commanderbob.com How do ships see in the dark?Though invisible to the human eye, the reflected infrared light is picked up by the scope and illuminates objects up to 200 feet away. The U.S. Coast Guard has long-established light display standards for nighttime navigation, and these apply to both vessels and navaids such as channel markers.View complete answer on boatingsafetymag.com Which vessel must have red and green sidelights and an all round white light when underway at night?For powered boats less than 39.4 feet, or 12 meters, you need to have the following set of navigation lights. One all-around white light that you can see from 360 degrees and from two miles away; And one pair of red and green sidelights that are visible at 112.5 degrees and from one mile away.View complete answer on boaterexam.com Which of the following visual distress signals is approved for use at night?The electric distress light is accepted for night use only and must automatically flash the international SOS distress signal, which is three short flashes, three long flashes, and three short flashes.View complete answer on boatus.org When vessels meet the vessel that must keep clear vessel a is referred to as which of the following?Vessel A is overtaking and is the give-way vessel. Vessel B is the stand-on vessel. As the give-way vessel, A must take EARLY and SUBSTANTIAL action to keep clear of the stand-on vessel B.View complete answer on boaterexam.com What lights should be on a boat at night?The required lights are: Red and green sidelights visible from a distance of at least one mile away on a dark, clear night. An all-round white light or both a masthead light and a sternlight. These lights must be visible from a distance of at least two miles away on a dark, clear night.View complete answer on boat-ed.com What is a stern light?A sternlight is a white light that is located at the stern of the boat and is only visible from behind the vessel. A masthead light is required on all power-driven vehicles. This white light shines forward and to both sides and must be displayed by all vessels 39.4 feet in length or longer when under engine power.View complete answer on ilearntoboat.com How do I remember port and starboard?9 Easy Ways to Remember Port and Starboard
View complete answer on cruisemummy.co.uk What can happen when two boats are tied together?Other than the biggest boat in the middle, no one sets an anchor. Additional anchors will cause the boats to ride incoming wakes and waves out of sync with each other and can create collisions. Tall boats should not be tied together.View complete answer on boatplanet.com When boating at night what does a single white light on a boat tell you quizlet?When you see only a white light, you are overtaking another vessel or it is anchored. It is the stand-on vessel, whether underway or anchored. You may go around it on either side.View complete answer on quizlet.com Which light should a sailboat use at night?The most common steaming light is a single white light that shines forward of the mast in a 225-degree arc. Combined with the stern light, a boat under power will now be displaying a 360-degree white light in combination with its red and green lights. This sequence of lights should be used while MOTORING at night.View complete answer on harborsailboats.com What are the 3 types of visual distress signals?Visual distress signals include day signals that are visible in sunlight, night signals that are visible in the dark, and anytime signals that can be used both day and night.View complete answer on boaterexam.com What does a distress signal look like?A distress signal can be three fires or piles of rocks in a triangle, three blasts on a whistle, three shots from a firearm, or three flashes of light, in succession followed by a one-minute pause and repeated until a response is received. Three blasts or flashes is the appropriate response.View complete answer on en.wikipedia.org What are the main distress signals?The most important are: (1) visual signals, such as a flame, a red flare, an orange smoke signal, or a square flag displayed with a ball below; (2) sound signals, such as a gun or rocket fired at regular intervals, or a continuous sounding of a fog-signal apparatus; and (3) radio signals such as the Morse group SOS, ...View complete answer on britannica.com Which lights would be required to be shown at night by a vessel which is restricted in her ability to deviate from her course?(b) A vessel restricted in her ability to manoeuvre, except a vessel engaged in mine clearance operations, shall exhibit: (i) three all-round lights in a vertical line where they can best be seen.View complete answer on ecolregs.com Why does the Navy use red lights at night?The human eye is less sensitive to longer wavelengths, so red light is chosen to preserve the night vision of the crew while still allowing them to still see their instrument panels. Submarines switch to red light when it's dark outside and crew members need to use the periscope or go on watch duty.View complete answer on sciencefocus.com What action should you take if you are approaching another boat at night and see a green and white light?Port (Left) ApproachIf a green and white light is visible, then another boat is approaching you from your boat's port (left) side. In this situation, you are the stand-on craft and should maintain your speed and direction. The other boat should take early and substantial action to steer well clear of your boat. View complete answer on boatsmartexam.com How do sailors know where they are at sea?Compasses, which indicate direction relative to the Earth's magnetic poles, are used in navigation on land, at sea, and in the air. Compasses were being used for navigation by the 1100s, and are still the most familiar navigational tools in the world.View complete answer on nationalgeographic.org What do sailors say when they see a ship?“Aye Aye Captain!” – a sign of approval. “Ahoy!” – sailors would use this exclamation among themselves to call out to each other.View complete answer on sailingeurope.com Why do cruise ships keep the bridge dark at night?Every ship in the world, from the simplest coasting steamer to a multi-billion dollar warship, with cruise ships in between, darken foredecks, and shade all forward facing windows to aid the human eye in retaining night vision.View complete answer on boards.cruisecritic.com.au |
What does a red and green light indicate when seen together at night quizlet?
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