Final answer:
The navigation lights in both theatrical and marine settings depend on factors including the type of space or vessel and environmental conditions, with lighting design in theatre being influenced by architectural space and technology, and nautical navigation considering safety and visibility.
Step-by-step explanation:
The rules for what navigation lights to display depend on various factors that are crucial in both the theatrical and nautical realms. In theatre, factors that influence lighting decisions include the architecture of the space, whether it's a proscenium theatre, thrust theatre, theatre in the round, a storefront theatre, or an outdoor venue. Each space demands a unique approach from lighting designers to tackle practical and artistic challenges. Furthermore, advances in technology have introduced LED and automated lighting fixtures, increasing the complexity of decisions that lighting designers must make, such as color, intensity, pan, tilt, beam size, and texture.
Similarly, nautical navigation lights must be designed considering the vessel's operational requirements and the surrounding environmental conditions. For instance, a lighthouse uses a rotating light at the top to warn ships away from the dangerous shoreline, ensuring that the light beam covers all directions.