NAV3 QUIZ 3 (1373)

What is the main purpose of dead reckoning in navigation?

• To estimate the ship's current position based on last known position, course, speed and current effects.

• To estimate the ship's current position based on last known position, course & speed.

• To estimate the ship's current position based on last known position, speed.

• To estimate the ship's current position based on last known speed & course.

Which of the following best describes how a lighthouse signals its location during the night?

• By lighting a large bonfire

• By flashing lights in a distinctive pattern or color

• By using foghorns to emit sound signals

• By raising a flag

What is the effect of set and drift on a vessel's course?

• It increases speed

• It causes the vessel to change direction

• It keeps the vessel on its intended path

• It only affects small vessels

A ship travels on a course of 084° at 9 knots for 1.7 hours. How far has it traveled?

• 5.3 nautical miles

• 15.3 nautical miles

• 6.3 nautical miles

• 18 nautical miles

Which feature of a beacon helps a ship identify it at night?

• The height of the structure

• Its unique flashing light pattern or color

• The material of construction

• Its proximity to a lighthouse

Why are lighthouses typically placed on cliffs or at high elevations?

• To protect them from waves

• To make maintenance easier

• To increase visibility from greater distances

• To avoid blocking views of nearby attractions

A ship is traveling north at 8 knots. What is the implication if it is experiencing an easterly current of 2 knots?

• The ship's speed will increase by 2 knots

• The ship will drift eastward

• The current has no effect on the course

• The ship will maintain its original path

If a ship is traveling at 12 knots and experiences a 1.5-knot current against its course, what is the ship's speed over ground?

• 10.5 knots

• 12 knots

• 8 knots

• 6 knots

What is the purpose of marine buoys in navigation?

• To mark fishing spots

• To act as floating storage units

• To mark safe passages or hazards

• To guide fishers

Why is timing important in dead reckoning?

• To avoid collisions

• To measure fuel consumption

• To estimate how far the ship has traveled

• To maintain constant communication