Trident II (D-5) Sea-Launched Ballistic Missile UGM 133A (Trident II Missile).

摘要

The TRIDENT II (D5) Sea-Launched Ballistic Missile UGM 133A (TRIDENT II (D5) missile) developed an improved Submarine Launched Ballistic Missile with greater accuracy and payload capability at equivalent ranges as compared to the TRIDENT I (C4) system. TRIDENT II (D5) enhances United States (US) strategic deterrence by providing a survivable sea-based system capable of engaging the full spectrum of potential targets. It enhances the US position in strategic arms negotiation by providing a weapon system with performance and payload flexibility that accommodates various treaty initiatives. The TRIDENT II (D5) missile's increased payload allows the deterrent mission to be achieved with fewer submarines.