Specifications 53crew 348troops 3540light (tn) 4235full load (tn) 109length (m) 15.70beam (m) 3.50draught (m) 7000range (nm) 16max speed (knots) 2Naval Engine diesel - MTU 2Naval Gun Oerlikon 20mm Mk.7 cannon1Naval Gun single 40 mm 1Naval Radar navigation radar DECCA 1226 Aircraft Typical Max Landing platform only. No hangar Royal Thai Navy Bell 212 12 Shipyards Bangkok Dock Company - Yan Nawa1 Italthai - 4nm NW Phraeksa1 List of Ships Filter: AllTH - Royal Thai Navy .......... 2 Hide Transfers Hide derivatives 1987--Royal Thai NavyLST 721HTMS SichangHSZF1988--Royal Thai NavyLST 722HTMS SurinHSZX2 units Events 1984-aug-31OrderedOrdered LST 721 HTMS Sichang 1987-apr-14LaunchedLaunched LST 721 HTMS Sichang originally as LST-6 1987-oct-09CommissionedCommissioned LST 721 HTMS Sichang 1988-apr-12LaunchedLaunched LST 722 HTMS Surin originally as LST-7 1988-dec-16CommissionedCommissioned LST 722 HTMS Surin 2017-aug-03DeploymentDeployment LST 722 HTMS Surin collided with Krungthep Bridge, Bankgok and damaged mast when she strayed off course and struck bridge