 The Port Squadron, located at both the Gul and Brani regional bases, is equipped with the newer generation of PT-class patrol-boats (previously together with the now-obsolete PX-class patrol-vessels) and have the primary task of ensuring the security and safety of the waters of Singapore's port by responding to criminal and/or safety incidents as well as projecting a major police presence in STW.The third squadron, the Coastal Patrol Squadron (CPS), operates the largest PCG vessels, the PH-class Coastal Patrol Craft (CPC), to secure the far-sea passages of the eastern approaches into STW (from the southwestern edge of the South China Sea) and ensure safe passage for all legitimate users.They are also tasked with protecting the Horsburgh Lighthouse on Pedra Branca in the vicinity, together with the Republic of Singapore Navy (RSN).