AT NIGHT!
30 minutes prior to sundown and thirty minutes after sunup
Checking with the authorities in charge of the waters in which you will operate your vessel is ALWAYS advisable.
You are the stand-on vessel but should take precautions in case the other operator doesn't see you.
Red
Green
Stop or Give way
Those include red lights on the port side and green lights on the other.Depends on the size of the vessel. My tiny little 14 ft boat is only required to show a white light. The link at the bottom of this page will take you to a chart showing lights and visible ranges for different sizes.What is the size of the vessel? Refer to "Navigation rules" for vessel specific answers.
Generally they are masthead light, port and starboard steaming light and stern light. Others may be displayed depending on the length of the vessel and what duties it is carrying out.
The color light that must show on the starboard side of a boat is green. This green light is part of the navigation lights used to indicate the direction the vessel is facing and helps prevent collisions at night or in low visibility conditions. The starboard (right) side green light is typically visible from 112.5 degrees, along with other navigation lights on the vessel.
The characteristics of navigation lights on a power driven vessel includes sidelights, sternlight, masthead light, and all-round white lights. Navigation lights must be displayed from sunset until sunrise as well as anytime visibility is restricted.
When approaching a lock under full control, a vessel should display the appropriate navigation lights as required by the International Regulations for Preventing Collisions at Sea (COLREGs). This typically includes displaying red and green sidelights and white masthead light. It is important to follow these regulations to ensure the safety of the vessel and other waterway users.
Checking with the authorities in charge of the waters in which you will operate your vessel is ALWAYS advisable.
Navigation lights, green starboard and red port. Masthead and stern lights should be white