Navigation NAU 102 Lesson 4. Chart Scales Scale – the ratio of a given distance on the chart to the actual distance which it represents on Earth. e.g.

Slides:

Advertisements

Similar presentations

Lesson 2-2 Example Example 3 Use to compare 382 and 365. You can graph the numbers on a number line. The greater number is farther right

Advertisements

Objectives Vocabulary Compare and contrast different map projections.

Session I NAUTICAL PUBLICATIONS

Land Navigation NOTE: THIS IS NOT A COMPLETE GUIDE. You should already be familiar with the topics within this presentation, and should seek additional.

LESSON 3: NAUTICAL PUBLICATIONS  AGENDA: –Navigator’s Reference Library –Chart/Publication Correction System –Plotting Equipment  Applicable reading:

Class 1b: Introduction to maps. What is a map? A generalized view of an area, usually some portion of Earth’s surface, as seen from above at a greatly.

Digimap Training Workshops Map scales Any map is a scale representation of the Earth’s surface Scale may be defined as: – the ratio between distance measured.

United States Coast Guard U.S. Coast Guard Auxiliary Approved USCG Auxiliary - Department of Education Copyright ©2004 Coast Guard Auxiliary Association,

Navigation NAU 102 Lesson 5. Chart Corrections Objects move Things Change! Printing errors New hazards discovered Always use up to date charts!

Lesson 2: Terrestrial Coordinate System and Nautical Charts

ALLOWANCE AND REQUISITIONING

Maps give us different viewpoints of the earth’s surface.

Section 2: Mapping Earth’s Surface

Cartography Basics: How Geographic Data are Stored and Represented.

Nautical Chart Products – NOAA Hydro Training 2009 Nautical Chart Products.

9/21/2015 UNCLASSIFIED 1 Supports: –Marine navigation –Mission planning –Geographic Information Systems Digital Nautical Chart (DNC) Relational database.

Welcome How to Use a Chart Presented by United States Power Squadrons®

Stock Market Game - Wrap-up Computer Information Technology.

Introduction to Coastal Navigation Coyright 2012 Bruce S. Liese. All rights reserved. Please do not copy or reproduce without permission of author.

Mapping in Surveys Uses of maps: Plan operations Facilitate data collection Presentation and analysis of results There are two main categories of maps:

EARTH AND SPACE SCIENCE Chapter 3 Models of the Earth 3.2 Mapping Earth’s Surface.

SCALE "Ratio of the distance between two points on a map and the earth distance between the same two points"

UNIT 1 LESSON MAPS & PROJECTIONS. THE STUDENT WILL BE ABLE TO…  Discuss the various functions of maps and understand what a projection is.  We’re only.

Mapping/Minerals/metamorphic Review. Scale relates to actual distance. Topographic maps and satellite imagery are two- dimensional models that provide.

 Geography is the study of where things are found on Earth’s surface and the reasons for the locations.  Human geographers ask two simple questions…

The Early Ages – Era 1 Components of a Map Basic Geographic Landforms Lesson 1-2.

Map Scale Warm-up Questions What is Map scale?(DOK 1)

Scale Drawings and Models

Bell Work: The area of the hexagonal base of a pyramid is 18√3. the height of the pyramid is 12. what is the volume?

RATIOS AND PROPORTIONS

A map scale represents the Earth’s surface drawn smaller than it really is. A map is drawn to scale. Scale means that a small distance on the map stands.

Navigation NAU 102 Lesson 8.

NAVIGATION TRAINING Section 3 Charts

World Geography Introduction to Maps. What is a map? A generalized view of an area, usually some portion of Earth’s surface, as seen from above at a greatly.

Mr. Keller AP Human Geography September 2006

Topographic Maps and Map Scale. Scale Scale is the relationship between distance on the ground and distance on the map Map scale is usually given as a.

Maps What are they? What do they tell us? What is map scale (large & small)? What is map projection? How does it impact the impression(s) the maps give.

Flotilla Navigation Study Guide Chapter 10: Navigation Reference Publications Instructor: Walter Spall All Questions are important for exam PowerPoint.

TODALSIGss A Map Analysis System Developed by Jeremy Anderson.

Stock Market Game - Wrap-up Computer Information Technology.

Navigation NAU 102 Lesson 4. Projection Comparisons.

Navigation NAU 102 Lesson 3.

Navigation NAU 102 Lesson 7.

Navigation NAU 102 Lesson 5. Chart Editions You must use the latest chart! Date and Edition Number are on the chart New editions issued due to many changes.

Unit 2 Measuring the Earth Mapping. Size and Shape Almost a perfect sphere- slight flattening in the polar regions and a slight bulging at the equatorial.

Unit 2: The scale of a map and the measuring of distance A. What is a scale?  Purpose: To fit large areas onto small sheets of paper  A ratio between.

Understanding Maps- Cartography. The Olde World Maps vs. Globes 2 dimensional Flat Distorted Shows small details Handy/can fold 3 dimensional Spherical.

Navigation NAU 102 Lesson 7. Introduction Nautical Publications Charts are not enough! We need more information. Voyage planning. Often paper & electronic.

Slide#: 1© GPS Financial Services Revised 01/26/2009 COUGAR MOUNTAIN PURCHASE ORDER RECEIVING ONLY PROCEDURE.

2 Size and Scale Scale: tells us the relationship between the distance on the map and the true distance on the surface of the Earth. Scale can be represented.

Geography of Canada Time Zones & More on Scale.

Map Reading The ability to read and understand a map is an important professional qualification for every Soldier. A thorough knowledge of map reading.

Navigation NAU 102 Lesson 3. The Nautical Chart A graphical representation of part of the earth. Shows water depths, shoreline, prominent land features,

8.3 SOLVING PROBLEMS WITH PROPORTIONS Essential Question: When should I reason proportionally?

Introduction To Topographical Maps LET II. Introduction Topographic maps show more detail of an area’s natural features. Because of its detail, especially.

What tools do Geographers use to describe the exact location of a place?

 Geography is the study of where things are found on Earth’s surface and the reasons for the locations.  Human geographers ask two simple.

World History in 1 Chart.

Section 2 Mapping Earth’s Surface

Scale Models & The Solar System

SCHOOL OF MARITIME BUSINESS AND MANAGEMENT DEPARTMENT OF DECK

= Divide each measure by the GCF, 3. drawing length actual length

America’s Boating Course 3rd Edition

Mr. Lip and League City: Analyzing Scale through the 5 Themes

How Do Geographers Describe Where Things Are?

What is a map? A map is a graphic representation of the whole or a part of an area. A map uses points, lines, and polygons to graphically represent an.

Scale: Is it an accurate representation?

Presentation transcript:

Navigation NAU 102 Lesson 4

Chart Scales Scale – the ratio of a given distance on the chart to the actual distance which it represents on Earth. e.g. 1:80,000 or 1/80,000 1 inch on chart = 80,000 inches on Earth

Chart Scales Scale can be stated by: e.g. 1:80,000 or 1/80,000 e.g. “2 inches to the mile” Ratio or fraction A statement A graphic scale

Chart Scales Small Scale = Large Area e.g. 1/100,000 vs. 1/10,000 Large Scale = Small Area The larger the scale, the greater the detail.

Chart Production National Geospacial-Intelligence Agency (NGA) Charts are produced by the government Formerly National Imagery and Mapping Agency (NIMA) Charts of foreign waters: Lots of other names, too!

Chart Production National Ocean Service (NOS) Part of National Oceanography & Atmospheric Administration (NOAA) Charts of US coastal and inland waters:

Chart Numbers 1 digit – no scale Charts are numbered with 1 to 5 digits. 2 digits – 1:9,000,001 and smaller 3 digits – 1:2,000,001 to 1:9,000,000 (e.g. Chart No. 1) 4 digits – Special Purpose (e.g. Plotting Sheets) 5 digits – 1:2,000,000 and larger

Chart Numbers 1 st digit = Ocean Basin 2 & 3 Digit Charts Cover entire (or most of) ocean basins

Chart Numbers

1 st digit = Coastal Region 5 Digit Charts Most common charts, day-to-day use. (Not the same as Ocean Basin) 1 st & 2 nd digits = Subregion Digits 3-5 = Specific Location (Counterclockwise within subregion)

Regions and Subregions

Chart Numbers

Chart Catalogs Free Produced by NGA and NOS Lists authorized sales agents Several volumes, by location Lists all available charts

Use of the NGA Catalog Step One: Review the index of the world’s coastal regions/subregions. Example: You are planning to enter Rio de Janeiro, Brazil.

Use of the NGA Catalog Rio de Janeiro lies in Region 2

Step #2 Locate the Small-scale Coastal Chart Use of the NGA Catalog

Step #3 Locate the Harbor Charts

Chart Scales Charts are classified by Scale Used for mid-ocean navigation Sailing charts < 1:600,000 General charts 1:150,000 to 1:600,000 Coastwise navigation Outside reefs and shoals

Chart Scales Inshore coastal navigation Coastal charts 1:50,000 to 1:150,000 Harbor charts >1:50,000 Small harbors & anchorages Entering Large bays

Chart Stock Numbers For purchasing and inventory purposes. 26 = subregion E.g. 26AHA A = portfolio number HA = chart series = chart number HA = harbor CO = coastal GN = general WO = world

Chart Ordering Can buy a portfolio Can purchase individual charts (E.g. 26A = General & Harbor charts for 26) You must have the latest, large scale chart for your location. All (or most) charts in a subregion

Chart Editions You must use the latest chart! Date and Edition Number are on the chart New editions issued due to many changes Current edition number – lower left 1 st Edition date – top center

Chart Editions

Chart Revisions Includes latest corrections Issued when out of stock Few, minor corrections A new edition not warranted Revision date (not number) printed near the current edition number.

Chart Revision Date

Introduction to Navigation Questions?