In a twin screw ship going half-ahead,both screws turning outboard and the rudder amidships,no current or wind,the vessel will().
A、Move bodily to port
B、Move bodily to starboard
C、Move in a zig-zag motion
D、Steer a fairly straight course
A、Move bodily to port
B、Move bodily to starboard
C、Move in a zig-zag motion
D、Steer a fairly straight course
A、Move bodily to port B、Move bodily to starboard C、Move in a zig-zag motion D、Steer a fairly straight course
A、move bodily to port B、move bodily to starboard C、move in a zig-zag motion D、steer a fairly straight course
A、Go ahead on both engines with the rudder hard to one side,if on a twin-screw vessel B、Back down with the rudder hard to one side,if on a single-screw vessel C、Take advantage of the tendency to back to port,if on a twin-screw vessel D、Turn so that the tendency to back into the wind can be used,if on a single-screw vessel
A、correct trim will be obtained more easily B、drag effect will be cancelled out C、side forces will be eliminated D、speed will be increased
A、If one screw is stopped,the ship will turn toward the side of the stopped screw B、The principal force which turns the ship is set up by the wake against the forward side of the rudder C、Turning response by use of the rudder only is greater than on a single-screw vessel D、With the rudder amidships,the ship will steer a fairly steady course