Final answer:
Vessels displaying three lights in a vertical line with the highest and lowest lights being red and the middle light being white are called masthead configurations. The red lights indicate a maritime hazard, and the white light helps with orientation. Fog signal requirements vary based on the type and size of the vessel, and it is essential to refer to specific regulations for accurate guidance.
Step-by-step explanation:
In maritime navigation, a vessel displaying three lights in a vertical line is commonly known as a masthead configuration. In this configuration, the highest light is red, the middle light is white, and the lowest light is also red. The red lights serve as navigational aids to indicate the presence of a maritime hazard. The white light is usually a masthead light that helps other vessels determine the orientation and direction of the ship.
When it comes to fog signals, it is important to note that the fog signal requirements vary based on the type of vessel and its size. While a rapid ringing of a bell for five seconds every minute could be one possible fog signal, it is not a universal rule that applies to all vessels. The International Regulations for Preventing Collisions at Sea (COLREGs) provide guidelines for fog signals, and it is advisable to consult specific regulations for accurate and detailed guidance on fog signals.