White lights can be on what buoys?

White lights can be found on various types of buoys, primarily navigational buoys, which help mark channels, hazards, or safe anchorage areas. These lights are often used in conjunction with colored lights to provide specific information to mariners. For example, white lights may indicate a safe passage or be used on mooring buoys to signal their presence, especially in low visibility conditions. Additionally, some regulatory buoys may also feature white lights.