TY JOUR TI STUDY OF STABILITY AND QUALITY OF AUTOMATIC CONTROL SYSTEM OF THE VESSEL WITH THE WHEELED PROPULSION STEERING UNIT ON THE SPECIFIED TRAJECTORY AT CHANGE OF NAVIGATION CONDITIONS KW vessel KW automatic control system KW qualitative indicators JO Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies AU Polyakov, I.. AU Grosheva, L.. AU Plyushchayev, V.. AU Solovyev, D.. PY 2014 IS 2014 PB Astrakhan State Technical University