By Lt. Adam Arndt, HSM Weapons School Pacific Public Affairs
In this file photo, Peruvian submarine BAP Pisagua (SS 33) arrives at Naval Base Point Loma in July for phase one of DESI-EX. (U.S. Navy/MC2 Derek Harkins) >>
SAN DIEGO - Commander, Helicopter Maritime Strike Wing Pacific (CHSMWP) began phase two of the annual Diesel Electric Submarine Initiative Exercise (DESI-EX), an international exercise held annually in conjunction with South American naval forces, Sept. 8, 2017.
DESI-EX is an undersea warfare exercise that allows MH-60R aircraft from various CHSMWP and Maritime Patrol and Reconnaissance Aircraft (MPRA) commands the ability to practice their anti-submarine warfare (ASW) skills against a skilled, foreign adversary in a variety of challenging environments. The event was organized by HSM Weapons School Pacific (HSMWSP) in coordination with Commander, Submarine Force Atlantic International Programs and Commander, U.S. 3rd Fleet, and will take place on the Southern California Offshore Range and Tanner Bank operating area.
Phase one of the exercise took place July 15 - 20 and involved aircraft and crews from six CHSMWP and three MPRA squadrons that completed 29 sorties over the course of 147 flight hours. Participants trained alongside the Peruvian Navy submarine BAP Pisagua (SS 33), a German Type 209 diesel-electric submarine, to refine their ASW and tactical acumen.












