What condition is established on a ship to ensure light security?

A darkened ship is a crucial condition for ensuring security, particularly in a military or tactical context. By minimizing onboard illumination, a ship reduces its visibility to potential threats, thereby making it less detectable to adversaries. This stealth approach can be essential when maneuvering in hostile waters or during operations where avoiding detection is a priority.

In addition to enhancing security, a darkened ship can retain the element of surprise and help conceal the movement of personnel and assets. This practice is often employed during critical missions to ensure that any activities on board remain obscured from enemy reconnaissance.

While other options, such as a brightly lit ship or a partially illuminated ship, would make it more conspicuous and vulnerable to detection, utilizing a flashing light system may be beneficial for communication or signaling, but it does not contribute to the goal of light security.