TY JOUR TI STATIC AND DYNAMIC PRINCIPLES FOR ASSESSING ECONOMIC EFFICIENCY OF MODERNIZATION OF VESSELS KW modernization KW assessment KW efficiency KW vessel KW principles KW investments JO Vestnik of Astrakhan State Technical University. Series: Economics AU Marchenko, S.. AU Lazarev, A.. PY 2019 IS 2019 PB Astrakhan State Technical University