a powerboat is operating at night. which of these lights must be shown?

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A powerboat is operating at night. which of these lights must be shown?

A powerboat that is operating at night should have a red light on the left side of the boat and a green light on the right side. A light wave with the longest wavelength scatters the least.

At night, a power boat operates.

What is the working principle of a power boat?

Due to the high speed of the power boat, the signal must be shown from a distance to other boats in order to prevent accidents.

Powerboats that operate at night need to have a light that is visible from a long distance.

What is scattering of light?

This phenomenon is called scattering of light when a straight (parallel) beam of light passes through any particle, absorbing some light, and spreading it in all directions.

In general, the light wave with the longest wavelength scatters the least. Since red light has the longest wavelength among all the colors, it scatters the least.

Due to the fact that red light scatters the least and can be seen from a distance, it is used in powerboats when operating at night at the left side of the boat to overtake the other boat.

The green light should be used on the bow’s right side.

In this case, it is advised to use red lights on the left side of the boat when the powerboat is operating at night and green lights on the right side of the boat when it is operating at daytime.

a powerboat is operating at night

It is required that these boats with a length of less than 65.6 feet (20 meters) are equipped with the lights shown in the illustration. Power-driven boats include sailboats that are driven by engines. The required lights are:

On a dark, clear night, it is possible to see both red and green sidelights from a distance of at least two miles away. (If the vehicle is less than 39.4 feet (12 meters) long, it is visible from at least one mile away.)
There should be an all-round white light (if it is less than 39.4 feet long) or both a masthead light and a sternlight. It is important that these lights are visible from a distance of at least two miles away on a dark and clear night when the masthead light (or all-round white light) is at least 3.3 feet (or one meter) higher than the sidelights.

RULES FOR NAVIGATION LIGHTS

Generally, recreational boats operating at night are required to display navigation lights between sunset and sunrise. Recent changes to the Inland Navigation Rules have made them almost identical to the International Rules, and indeed, we will describe the International Rules as a matter of convenience.

Defining and applying the basic rules

The port sidelights are red while the starboard sidelights are green and both sidelights glimmer from dead ahead to 112.5° aft on either side.
There are two white stern lights on each side, which shine aft and 67.5° forward (so that a full circle of light is created by the sidelights and stern light).
A white light shines through 360 degrees all around.
Lights on the masthead are white and shine from 112.5° on the port side through dead ahead to 112.5° on the starboard side for 225° forward.
A sailboat that is powered is referred to as a powerboat.
During the day, sailboats must fly a black “steaming cone” with its point downward, where it can be seen. When under power, sailboats must follow the rules of the road for powerboats.

RULES FOR NAVIGATION LIGHTS

Depending on the size of the vessel, navigation lights are required

Depending on the length of the boat, navigation lights may need to be longer and have a greater visibility range. Sidelights cannot be combined into a single bi-color light on larger boats.

Powerboats and Sailboats When Under Power

Permissible variations to this rule appear below. NOTE: Sailboats driven by engines are considered power-driven and must follow the “Under Power” rules.

A single all-round light may replace separate stern and masthead lights on powerboats under 12m (39.4′).
Boats under power less than 20m (65.7′) can substitute a single bi-color light for sidelights.

Sailboats When Under Sail

A stern light and sidelights are essential. Permissible variations to this rule are listed below.

It is possible to substitute a tricolor light for separate sidelights and stern lights on sailboats less than 20m (65.7′).
An acceptable substitute for exhibiting lights is to keep ready at hand an electric torch or lighted lantern (flashlight) with a white light that shall be displayed in sufficient time to avoid collisions on sailboats less than 7m (23′).
During the day, sailboats that are under power with their sails hoisted must display a motoring cone with its apex pointing downward.

Vessels powered by oars (rowboats, kayaks, canoes)

The lights of a sailboat may be displayed on a rowed or paddled vessel. An acceptable substitute is to keep on hand an electric torch or lighted lantern (flashlight) that emits a white light.

The lights of a sailboat

Vessels at Anchor

Outside a designated anchorage, an all-round light visible for at least 2nm is required at night.
It is mandatory to display a black anchor ball when anchored outside a designated anchorage during the day.

Minimum Visibility Range

For boats less than 12m (39.4′), sidelights must be visible for at least 1nm. All other lights must be visible for at least 2nm.
On boats less than 20m (65.7′), the masthead light must be visible for 3nm. All other lights must be visible for 2nm.
In boats over 20m (65.7′) and less than 50m (164′), the masthead light must be visible for 5nm. All other lights must be visible for 2nm.

a powerboat is operating at night. which of these lights must be shown?