USS Cyclone (PC-1) was the lead ship of the 14 Cyclone-class patrol ships, commissioned on 7 August 1993. The Cyclone-class were designed with the intention of supporting Navy SEAL operations by serving as a long-range deployment and extraction platform. However, the Cyclone-class were rejected by both the Navy SEALs and the regular Navy, as they considered the ship too big and too small for their needs, respectively. Cyclone and some of her sister ships were then transferred to the US Coast Guard on 29 February 2000. After just four years of service with the Coast Guard (and eleven years in total with the US), Cyclone was sold to the Philippine Navy on 8 March 2004, renamed BRP General Mariano Alvarez, and remains in active service to this day.

USS Cyclone was introduced in Update "Drone Age". Being purposefully designed as a support vessel, she is armed with small but fast-firing 25 mm autocannons with high penetration, allowing her to quickly deal with smaller coastal vessels. In addition, despite her relatively small displacement and low crew count, the Cyclone features a detailed damage model that allows her to withstand a lot of hits from low-calibre rounds. However, the Cyclone still lacks firepower to effectively engage larger frigates or destroyers, which can easily cripple her with their larger calibre guns.