Introduction to Earth and Nautical Charts
This free online course on the expression of longitude and latitude coordinates, as well as the nautical mile concepts.Publisher: ADU
CertificationView course modules
The shape of the earth and nautical charts is a free online course that begins by introducing to the proposition of Aristotle and Pythagoras on the shape of the earth. The course will also explain how the great circle can be drawn on the surface of a sphere, and how the spherical triangle can be formed on the sphere by arcs of three great circles. In this course, you will be introduced to the concept of the earth axis, and how the polar axis connects the poles of a body. This course then discusses how the earth’s axis connects the north and south poles, and how the earth’s equator surface equidistant from the true north and south poles. The course will also explain the shape of the earth and nautical charts course the concept of the knot, cable, the datum, nautical publications, as well as how to gather the important information that is required during sailing. The features of the terrestrial coordinates, and how the nautical chart can be used by a navigator plots courses to review daily works will be highlighted. The importance of the nautical charts for marine navigation, the use of the title block, datum and soundings will be covered in this course.
The course then explains the prime meridian and how the anti-meridian can be used to form a great circle, as well as how it can be used to divide the earth into different halves. The format of expressing the longitude coordinates, the concept of the geographical, statute and nautical mile will also be explained in the course. You will learn how the meridional parts of a given latitude can be measured, as well as the difference between the two latitudes in this course. You will also learn about the natural scale, and how it can be used to determine the relationship between a given distance on the chart and on the earth. This course will teach you about the symbols and abbreviations that can be used on charts, and how to consciously avoid charted dangers during passage planning. Also, the course will explain how the symbols and abbreviations can be grouped under the required heading, the features of the notice to mariners, and the light list. You will learn about tide, current tables, the coast pilots, the important nautical publications of the United States, and important admiralty nautical publications.
Furthermore, this course will help you get familiar with the pole of a great circle, small circle, how the spherical angle can be measured, as well as the properties of a spherical triangle. You will also learn how the spherical triangles can be formed by the interjection of different circles. The course will teach you how the oblique spherical triangles, quadrantile spherical triangles, bi-quadrantal spherical triangles, triquadrantal spherical triangles, and the symmetrical triangles can be solved. Along with learning about the difference of latitude and difference of longitude, the comparison of latitude and longitude, and how the sun can be used to determine our position here on earth. The principles for finding latitude, and longitude by the sun, and how to measure the distance between two positions on a Mercator chart will be highlighted in the course. The shape of the earth and nautical charts course will help you improve your knowledge of the procedures for correction of charts, publications, and admiralty notices to mariners. This free online course will be of great interest to students, researchers, and anyone with an interest in marine navigation. So, register for this course and start your next learning journey today.Start Course Now
Shape of the Earth
Shape of the Earth - Learning Outcomes
Introduction to Shape of the Earth
Cable and Knot
Shape of the Earth - Lesson Summary
Nautical Charts - Learning Outcomes
Introduction to Nautical Chart
Meridional Parts and Natural Scale
Symbols and Abbreviations Used on Admiralty Charts
Lights and Other Publications
Nautical Charts - Lesson Summary
Upon the successful completion of this course, you should be able to:
- Identify the equatorial and polar radii of the shape of the earth.
- Explain the application of great Circle, as well as the small circle.
- Explain the tilt of the earth's axis, as well as the effect of the tilt.
- Describe the measurement of a platitude and parallels of latitude.
- Explain the significance of the referential meridian prime meridian.
- Explain the measure and significance of a geographical statute and nautical mile.
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