What characterizes "fast-jet" aircraft in the RAF fleet?

Fast-jet aircraft in the RAF are characterized by their high speed and performance capabilities. This classification includes fighter jets and other aircraft designed for air superiority, ground attack, and reconnaissance missions. Their design focuses on achieving high velocities, allowing for quick response times and the ability to engage in air-to-air and air-to-ground combat effectively.

These aircraft often feature advanced engines and aerodynamics, enabling them to perform at various altitudes and execute complex maneuvers that are crucial for combat scenarios. High speed is essential not only for achieving mission objectives but also for evading threats during operations.

In contrast, the other options refer to characteristics that do not define fast-jet aircraft. Low altitude flying capabilities may be associated with other types of aircraft, such as ground attack aircraft. Maritime operations typically pertain to naval aviation units, while cargo carriers are designed for transportation purposes rather than fast aerial engagements.