What is a common feature of destroyers and frigates?

Destroyers and frigates are both versatile naval vessels that play crucial roles in modern naval warfare, and a common feature linking them is their combat systems designed for anti-surface and anti-air operations. These vessels are equipped with weapons and sensors that enable them to engage surface threats, such as enemy ships, while also defending against aerial threats posed by aircraft or missiles.

Destroyers typically have more advanced combat systems and greater firepower compared to frigates, but both classes share the mission of protecting naval fleets and conducting various types of warfare. As such, their designs include systems for detecting, tracking, and engaging targets across multiple domains, enhancing their effectiveness in fleet operations.

The other options, while relevant to certain classes of ships or specific capabilities, do not apply universally to both destroyers and frigates. For instance, carrier-based launch capability is specific to aircraft carriers, and airborne early warning systems tend to be linked with specialized aircraft rather than surface combatants. Stealth technology, while it may feature in some modern ships, is not a defining element shared by all destroyers and frigates.