TY JOUR TI DEVELOPMENT OF METHODS OF TECHNICAL AND ECONOMIC FEASIBILITY OF INVESTMENTS IN SEAPORT STEVEDORING SYSTEMS KW seaport KW stevedoring system KW economic efficiency KW technological line KW investments KW performance indicators KW optimal option KW net present value (NPV) KW idle time of ships JO Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies AU Burdun, E.. PY 2014 IS 2014 PB Astrakhan State Technical University