When the engineer room is put in standby condition, the engineer in charge of the watch needs not to _______.
A.
ensure all machinery which may be used during maneuvering is in ready
B.
ensure adequate reserve of power is available for steering gear and other requirements
C.
keep the main propulsion unit controls continuously attended when in manual mode of operation
D.
ensure all machinery which may be used during maneuvering is running stably