It is not mandatory
The powerboat should pass to the stern of the sailboat to avoid its wash causing a problem for the sailboat To avoid a collision, the powerboat should avoid crossing ahead of the sailboat.
Your boat should have a data plate near the stern. (It's normally screwed to the inside of the stern.) On it will be the max horsepower you can run, because no two boats are alike.
If a sailboat is operating under sail at night, it should display a white stern light and a red and green navigation light at the bow. The red light indicates the port side (left), while the green light indicates the starboard side (right). These lights help other vessels determine the sailboat's orientation and direction of travel. Additionally, if the sailboat is not under power, it should not display a white masthead light, as that indicates a powered vessel.
At night, a sailboat should display a combination of navigation lights to ensure visibility and safety. This typically includes a white stern light at the back, a red light on the port side (left), and a green light on the starboard side (right). Additionally, if the sailboat is under sail, it may also show a white all-round light at the top of its mast. These lights help other vessels determine the direction and status of the sailboat.
Port (red) and Starboard (green) running lights and a white light which will be mounted on either the stern or the masthead.
I have an SLT 780 & the VIN plate is riveted to the stern fiberglass directly above the impeller housing. Steve
stern
When operating a sailboat at night, you should use navigation lights that comply with maritime regulations. Typically, this includes a white stern light, red and green sidelights, and an all-round white light for vessels at anchor. Ensure that these lights are functioning properly to enhance visibility and prevent collisions with other vessels. Additionally, it’s important to avoid using bright white lights that can impair your night vision.
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A properly lit sailboat at night is equipped with navigation lights that comply with maritime regulations. This includes a white stern light, red and green sidelights, and a masthead light if the boat is over 7 meters in length. These lights help indicate the boat's position, heading, and status to other vessels, ensuring safety on the water. Additionally, the lights should be visible from a distance to enhance visibility and avoid collisions.
You give no options but the standard lights depend on things like length overall. A minimum would be port and starboard running lights, masthead light and stern light
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