TY JOUR TI Analysis of frequency spectrum of outboard motor Hangkai 4.0 noise when nosing KW noise insulation KW outboard boat motors KW small vessels KW marine power plants KW nosing JO Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies AU Pokusaev, M.. AU Khmelnitsky, K.. PY 2020 IS PB Astrakhan State Technical University