Vessel Seamanship and Maneuvering Flashcards

What effect does prop walk have on a single-engine vessel when going astern?

Answer: The stern moves toward the direction of propeller rotation

Prop walk causes the stern to move in the direction the bottom of the propeller is rotating when in reverse, typically to port on a right-hand rotation propeller.

What is the proper technique for approaching a dock in a crosswind pushing toward the dock?

Answer: Approach at a shallow angle, slow, and let the wind push the vessel alongside

When the wind is pushing toward the dock, approach at a shallow angle at slow speed, allowing the wind to set the vessel alongside gently.

What is the turning circle of a vessel?

Answer: The path traced by a vessel from the time the rudder is put hard over until it returns to its original heading

The turning circle is the circular path traced by a vessels pivot point when the rudder is put hard over.

How does trim affect a vessels handling characteristics?

Answer: Bow-heavy trim improves directional stability but reduces maneuverability; stern-heavy trim increases maneuverability but reduces stability

Trim significantly affects handling: bow-down trim tracks straighter but turns slowly; stern-down trim turns more easily but may be less directionally stable.

What is the danger of following seas (waves from astern)?

Answer: Risk of broaching, pooping (waves breaking over the stern), or surfing out of control

Following seas can cause broaching, pooping, or surfing down wave faces with loss of steering control.

What is the proper procedure for passing through a narrow channel?

Answer: Keep to the starboard side of the channel, maintain safe speed, and be prepared for meeting traffic

In narrow channels, vessels must keep to the starboard side, maintain safe speed, and be alert for oncoming traffic.