when must navigation lights be displayed ?

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https://safeboatingcourse.ca/when-to-use-navigation-lights/

When Must Navigation Lights be Displayed? | Rules for Boaters

When to Use Navigation Lights

Vessels must use their navigation lights when operating in the evening after sunset or early in the morning before sunrise. Navigation lights must also be used during the day when visibility is restricted or reduced. Fog, heavy rain and snow are examples of conditions that can reduce visibility.

https://www.boatus.org/study-guide/navigation/lights/

Navigation Lights : BoatUS Foundation
https://www.boatus.org/study-guide/navigation/lights/
You are required to display the appropriate lights at night or during times of reduced visibility. Navigation lights are used to prevent collisions at night or in times of reduced visibility, and are an essential tool in keeping you and your vessel safe. Nav lights allow you to see other nearby vessels, and allow other vessels to see you.
Rules of The Road‧Navigation Sounds

https://aceboater.com/en/navigation-lights

Navigation lights on boats – Rules & Regulations | ACE BOATER®
https://aceboater.com/en/navigation-lights
Depending on the lights required to be displayed on your boat based on its length and type of propulsion, the information that these lights provide to others can tell them whether you are at anchor or underway or engaged in some other activity, whether you are a power-driven vessel or not, what your heading is, etc.

https://www.railblaza.com/blog/what-navigation-lights-do-i-need/

What are the Rules For Navigation Lights & What Nav Lights …
https://www.railblaza.com/blog/what-navigation-lights-do-i-need/
Navigation Lights A set of lights shown by a ship or aircraft between sunset and sunrise, and in rain and fog, to indicate its position and orientation. Something any skipper needs to know is what Navigation lights are required at night. Links to your local maritime rules at bottom of this blog. Requirements for vessels under 12 metres

https://improvesailing.com/questions/navigation-lights-guide

Boat Navigation Lights Rules: Illustrated Beginners Guide …
https://improvesailing.com/questions/navigation-lights-guide
Masthead light must be visible for three nautical miles, all other lights must have a two nautical mile visibility. Over 65 Feet – Side lights must be separated. May not show a masthead tricolor light.

https://www.mywestshore.com/which-navigation-lights-does-your-boat-need/

Which Navigation Lights Does Your Boat Need? – My Westshore

Which Navigation Lights Does Your Boat Need?

When Must Navigation Lights Be Displayed? Just like your new car needs to have navigation lights, so does your fishing boat. Navigation lights must always be used between sunset and sunrise. It does not matter how light or dark it is during those hours.

https://www.boat-ed.com/alabama/studyGuide/Common-Navigation-Lights/10100202_26044/

Common Navigation Lights – Boat Ed
https://www.boat-ed.com/alabama/studyGuide/Common-Navigation-Lights/10100202_26044/
Navigation lights help you and other boaters determine which is the give-way vessel when encountering each other at night. These lights must be displayed from sunset to sunrise and during periods of restricted visibility, such as fog. There are four common navigation lights.

https://treehozz.com/what-lights-should-be-displayed-when-anchored-at-night

What lights should be displayed when anchored at night?
https://treehozz.com/what-lights-should-be-displayed-when-anchored-at-night
The required lights are: Red and green sidelights visible from a distance of at least two miles away—or if less than 39.4 feet (12 meters) long, at least one mile away—on a dark, clear night. An all-round white light (if vessel is less than 39.4 feet long) or both a masthead light and a sternlight.

https://www.flashcardmachine.com/captains-course-rules41100.html

Captain’s Course Rules 41-100 Flashcards
https://www.flashcardmachine.com/captains-course-rules41100.html
BOTH INTERNATIONAL & INLAND Navigation lights must be displayed in all weathers from sunset to sunrise. They also . A. must be displayed when day signals are being used B. must be displayed when moored to a pier C. may be extinguished at night on open waters when no other vessels are in the area D. may be displayed during daylight

https://aviation.stackexchange.com/questions/64/when-to-use-beacon-anti-collision-strobe-logo-and-navigation-lights

faa regulations – When to use beacon, anti-collision …
https://aviation.stackexchange.com/questions/64/when-to-use-beacon-anti-collision-strobe-logo-and-navigation-lights
wait, all lights, except for landing lights, should be illuminated to make the aircraft conspicuous to ATC and other aircraft on approach. Landing lights should be turned on when takeoff clearance is received or when commencing takeoff roll at an airport without an operating