on their point of contact

at the centre of curvature

at the centre of circle

at the pin joint

parallel to the link joining the points

perpendicular to the link joining the points

at 45 Degree to the link joining the points

none of the above

zero

minimum

maximum

none of these

to move the ship towards star-board

to move the ship towards port side

to raise the bow and lower the stern

to raise the stern and lower the bow

varies in magnitude but constant in direction

varies in direction but constant in magnitude

varies in magnitude and direction both

constant in magnitude and direction both