#1
Which instrument is commonly used for determining direction?
Compass
ExplanationA magnetic instrument indicating direction relative to magnetic north.
#2
What does GPS stand for?
Global Positioning System
ExplanationA satellite-based navigation system providing location and time information.
#3
What is a 'waypoint' in navigation?
A location or point marked on a map or GPS route
ExplanationA specific location or point on a map or GPS route.
#4
What is the purpose of a route plan in navigation?
To outline a planned course of travel
ExplanationA plan detailing the intended course of travel.
#5
What is the primary unit of measurement for nautical distances?
Nautical miles
ExplanationA unit of measurement used in maritime and aviation navigation.
#6
Which of the following is NOT a primary cardinal direction?
Central
ExplanationCentral is not one of the four cardinal directions: north, south, east, and west.
#7
What is the purpose of a nautical chart?
To navigate ships and boats
ExplanationA map designed for maritime navigation, showing water depths, shoreline, and aids to navigation.
#8
What is dead reckoning in navigation?
Navigation based on estimated speed and direction
ExplanationCalculating one's current position based on a previously determined position and advancing that position based upon known or estimated speeds over elapsed time.
#9
What does the term 'bearing' refer to in navigation?
The direction of travel measured clockwise from north
ExplanationThe direction of an object or a point, measured clockwise from the north.
#10
What is the significance of the North Star (Polaris) in navigation?
It indicates the direction of true north
ExplanationUsed as a navigational aid due to its fixed position relative to the Earth's axis.
#11
Which method of navigation relies on the position of celestial bodies?
Celestial navigation
ExplanationNavigation by observing celestial bodies such as stars, planets, and the sun.
#12
What is a 'Rhumb Line' in navigation?
A line that follows a constant compass direction
ExplanationA line on the Earth's surface that cuts all meridians at the same angle.
#13
What is the primary purpose of a sextant in celestial navigation?
To measure the altitude of celestial bodies
ExplanationAn instrument used to measure the angle between a celestial object and the horizon.
#14
What is the Mercator projection primarily used for in navigation?
To navigate along rhumb lines
ExplanationA map projection useful for navigation because rhumb lines are straight lines on it.
#15
What is the purpose of a marine sextant in navigation?
To measure the altitude of celestial bodies
ExplanationAn instrument used to measure the angle between a celestial object and the horizon.