A vessel towing astern in an operation which severely restricts the towing vessel and her tow in their ability to change course shall，when making way，exhibit（）.

It is easier to dock a right-hand，single-screw vessel（）.

Catenary as applied to tow lines denotes the（）.

In a following sea，a wave has overtaken your vessel and thrown the stern to starboard. To continue along your original course，you should（）.

In towing it is desirable for the tug and the vessel to ride wave crests simultaneously because（）.

For the deepest water when rounding a bend in a river，you should navigate your vessel（）.

A vessel which through some exceptional circumstance is unable to maneuver as required by these Rules and is therefore unable to keep out of the way of another vessel is called（）.

At night，a vessel shall indicate that she is restricted in her ability to maneuver by showing in a vertical line two（）.

Besides saving distance along the track line，another advantage of the Scharnow Turn over the Williamson Turn in a man overboard situation because（）.

In twin-screw engine installations while going ahead，maneuvering qualities are most effective when the tops of the propeller blades both turn（）.