What is the firepower of USS Tripoli's onboard defense systems?

The firepower of USS Tripoli's onboard defense systems is primarily characterized by the Phalanx Close-In Weapon System (CIWS) and various machine guns. The Phalanx CIWS is an automated gun system that serves as a last line of defense against incoming threats, such as missiles and aircraft, making it a crucial component for the ship’s point defense capabilities. Its radar-guided system allows for rapid engagement of fast-moving targets, ensuring adequate protection for the vessel.

In addition to the Phalanx CIWS, USS Tripoli is equipped with several machine guns, which are versatile and can be used for close defense against small boats, personnel, and low-flying aircraft. This combination provides a layered defense strategy that enhances the overall survivability of the ship in a combat environment.

The other options mentioned—torpedo launchers, standard missile launchers, and heavy artillery or fighter jets—either do not accurately represent the specific capabilities and roles of USS Tripoli's defense systems or pertain more to offensive strike capabilities rather than onboard defense.