DWO Ship Handling 2

Question 1

When maneuvering a single-screw vessel with a right-handed propeller in close quarters, the stern tends to swing to which side when going astern?

Accepted Answer

Starboard

Answer

A right-handed propeller in reverse produces paddle-wheel effect that kicks the stern to starboard.

Question 2

What is the primary purpose of a 'spring line' when berthing a vessel?

Accepted Answer

To prevent fore-and-aft movement along the pier

Answer

Spring lines run at an angle along the ship's length to prevent the vessel from moving forward or aft along the dock.

Question 3

The advance of a vessel is defined as the distance traveled in what direction during a turn?

Accepted Answer

Along the original course heading

Answer

Advance is the distance a ship moves forward (along the original course direction) from the time the helm is put over until the new heading is reached.

Question 4

When a deeply loaded tanker requires more stopping distance than a light ship, this is primarily due to:

Accepted Answer

Greater displacement and inertia

Answer

Greater displacement means more mass and momentum, requiring significantly more distance and time to stop.

Question 5

A vessel is said to be in 'irons' when it:

Accepted Answer

Has lost steerage way and cannot maneuver effectively

Answer

A vessel in irons has lost enough speed that the rudder is ineffective and the ship cannot respond to helm commands.

(DWO) Deck Watch Officer Practice Test

(DWO) Deck Watch Officer Practice Test

DWO Ship Handling 2