Which sailboats is exhibiting the proper navigation light configuration?

Sailboats are required to exhibit specific navigation light configurations depending on their activity. A sailing vessel under sail alone should display a red port light, a green starboard light, and a white stern light, while at anchor it shows an all-around white light. If the sailboat is under power or has its engine running, it must also show a masthead light in addition to the sidelights and stern light. Always ensure that the lights are visible from all directions to comply with maritime regulations.