NAV 1 LONG QUIZ 1 1135

How does a GPS receiver support safe navigation on board vessels?

• By detecting and tracking nearby targets using radar signals

• By measuring wind direction and heading for maneuvering decisions

• By providing satellite-based data on position, speed, and course over ground

• By recording engine performance metrics such as fuel usage and RPM

How does DGPS improve the accuracy of standard GPS signals during navigation?

• By synchronizing AIS data with ECDIS chart overlays

• By filtering radar echoes from nearby vessel targets

• By adjusting compass deviation using manual input

• By applying correction signals from reference stations

Why is AIS required to operate continuously under SOLAS regulations?

• To monitor fuel usage and engine temperature readings

• To ensure real-time data exchange with other vessels

• To record crew schedules and rest hour compliance logs

• To track weather changes and tidal condition updates

Why is ECDIS considered a safety-critical system under SOLAS standards?

• It reduces human error and warns of navigational hazards

• It calculates fuel usage and engine performance metrics

• It monitors crew rest hours and duty schedule compliance

• It displays weather forecasts and tidal prediction updates

How does a RADAR scanner help prevent collisions during navigation?

• By overlaying charts and alarms to highlight route deviations

• By transmitting vessel identity and movement data to nearby ships

• By detecting objects through reflected radio waves and displaying their positions

• By measuring water flow beneath the hull to estimate vessel speed

How does RADAR assist navigation in poor visibility conditions?

• By transmitting AIS signals to shore stations

• By displaying electronic charts with overlays

• By detecting objects using radio wave reflection

• By recording course and speed for playback

How does a course recorder support post-voyage navigational analysis on board vessels?

• By measuring vessel velocity through water flow detection

• By storing heading and speed data throughout the voyage

• By displaying seabed contours for depth interpretation

• By transmitting vessel identity and status to nearby ships

Why is the course recorder essential for safe bridge navigation?

• It maintains a log of heading and speed changes

• It transmits AIS signals to nearby shore stations

• It calculates fuel usage and engine performance

• It displays radar targets and collision risk data

How does an echo sounder contribute to safe navigation during a voyage?

• It displays weather forecasts and tidal predictions onboard

• It records crew schedules and rest hour compliance logs

• It measures depth below keel using transmitted sound pulses

• It calculates compass deviation and gyro error correction values

How does the gyro compass improve heading accuracy on the bridge?

• It provides true heading unaffected by magnetic fields

• It monitors fuel usage and engine temperature levels

• It transmits weather updates to shore-based stations

• It displays tidal predictions and wind direction data