Intro to Navigation, Marine Navigation and Aids to Navigation NS3

How long is a nautical mile in "actual " yards?

What is the shortest distance of travel between two points on Earth or any globe?

How many active satellites are there currently?

What is NOT one of the three principal characteristics of navigational lights?

What is the direction in which a ship is forced by wind and current?

This is any circle formed on Earth’s surface by passing a plane through its center.

What instrument determines the depth of water under a ship's keel?

How many whole number meridians are there on Earth, and what unit does each represent?

What is represented by the picture?

Which is longer, a statute mile or a nautical mile?

What is a line indicating a series of possible positions of a ship as a result of observation or measurement?

What type of buoy is shaped like a cylinder, which serves as a green left-hand channel buoys if unlighted?

What is the picture an example of?

In 1964, this system became the first space-based navigational system?

What is represented by the picture?

In order to be defined as a great circle, a plane MUST pass through what point?

These are all the imaginary lines formed on Earth’s surface by planes passing perpendicular to the Earth’s axis.

What is the starting point for numbering meridians called?

What do we call the Great Circle that bisects the Earth into Northern and Southern hemispheres?

What type of buoys are red and white vertically striped and mark the middle of a channel or fairway?

What do we call the imaginary lines that run straight between the North and South Poles?

What is a position determined without use of any previous position, using visual, electronic or celestial observation?

How many parallels of latitude are Great Circles?

How many nautical miles are there in one degree along a great circle?

What is represented by the picture?

What type of navigational light do lighthouses have?

What do we call the imaginary lines on the surface of the Earth made by great circles that bisect both poles?

These grid lines measure distances N / S from the Equator and appear horizontal on charts

An astronomical device used to determine Lat and Long at sea by measuring angular distances of celestial objects?

What unit is used to measure speed at sea?

Better accuracy to position information due to land-based receivers is called?

This is defined as the perimeter of a circle.

Into what units may one degree of circumference be divided, much like a clock?

What is the picture an example of?

What is a paper two-dimensional representation mariners use to navigate the waters of the world?

What is an optical distance-measuring device that measures angles to determine distance to an object?

What meridian marks the International Date Line?

What are the two points at which the Earth’s spin axis penetrates its surface called?

When selecting objects from which to determine LOPs for fixes, the fix is reliable if all the LOPs form what?

If the sounding took 4 seconds, what is the depth of the water?

What specific structure / site is the reference place for the Prime Meridian?

This gives a ship an accurate and continuous dead reckoning position using gyroscopes and computer tracks with accuracy?

What is an advantage of using RADAR for navigation?

What is another name for a terrestrial sphere which represents Earth?

What item is used especially for transferring the bearing of a plotted course to a compass rose?

Meridians measure distance in what direction?

How many degrees of “parallels” (latitude) are there from the equator to the North Pole?

How many degrees are there in a circle?

Latitude is always measured in what direction and range of degrees?

What type of buoy are upright wooden poles or tubes of steel, which are used to mark obstructions?

What is represented by the picture?

One minute of arc on a great circle is broken down into what smaller subdivision?

The science by which seamen find their vessel’s position and guide it from one place to another

What type of buoy has a conical shape, and serves as a red right-hand channel buoys if unlighted?

What factor DOES NOT alter the speed of sound in water?

How long is a statute mile in "actual " yards?

Two landmarks or navigation aids observed in line, one behind the other is called what?

What are unlighted structural aids to navigation?

Set is the speed of the directional force by wind and/or current in knots? (T or F)

What type of buoys are green and red horizontally banded buoys that mark obstruction or channel junctions?

The unit knot for speed at sea stands for what?