What lights are visible from an angle of 112.5 degrees?

In maritime navigation, the visibility of navigation lights is defined by specific angles, which aid in identifying the type of vessel and its direction of travel. Sidelights, which are the red and green lights, are displayed at the front sides of a vessel, showing the port and starboard sides of the boat. These lights are visible from an angle of 112.5 degrees out from the bow. The mast light, usually white, is positioned higher on the vessel and has a visibility angle of 225 degrees.

When both sidelights and mast light are illuminated, they create a total viewable angle of 112.5 degrees for the sidelights and an additional 112.5 degrees for the mast light, covering a broad area for other vessels. This combination is essential for nighttime navigation, allowing other mariners to recognize the orientation and type of vessel they are encountering.

This is why the correct answer indicates that both sidelights and mast light can be visible from an angle of 112.5 degrees. Other options do not encompass the complete set of lights that would be visible from this angle.