Vietnam Vietnam People's Navy Active: Tran Khanh Du (HQ-501) ex-USS Maricopa County (LST-938) Polnocny class - LST HQ-511 HQ-512 HQ-521 Abbreviations LHA = Landing Helicopter Assault LHD = Landing Helicopter Dock LPD = Landing Platform Dock LPH = Landing Platform Helicopter LSD = Landing Ship Dock LSH = Landing Ship Heavy LSL = Landing Ship Logistics LST = Landing Ship Tank See also Amphibious assault ship Amphibious warfare ship List of aircraft carriers in service References Ships Lists of ships