Chart Basics The chart extracts on Chart Basics VA2,3,4,6,7,8,9,12,13,15,21 are NOT TO BE USED FOR NAVIGATION. © Crown Copyright and/or database rights.

Slides:



Advertisements
Similar presentations
Goddard Sailing Association Laguna 26 Cruiser Qualification Course version 6.
Advertisements

Pilotage Mark Powell Mole Valley Sub Aqua Club SAA
GEO-BOWL All Grades “We play mind games.” This part of a map tells what the map is about. Title.
Social Studies Geography Vocabulary Words
Marine Charts and Navigation
Navigation NAU 102 Lesson 5. Chart Corrections Objects move Things Change! Printing errors New hazards discovered Always use up to date charts!
Chapter 3: Nautical Chart
What are the four main points on a compass rose? cardinal directions
Map Skills Basics.
Using Maps and Globes.
Geography Latitude and Longitude Solutions. Latitude lines Run East to West Parallel to the Equator Measures degrees North or South of the Equator.
Chapter 3 Models of Earth.
Finding Locations on Earth Chapter 3. Latitude  Latitude is the angular distance north or south of the equator.  Run parallel to the equator.  Called.
Welcome How to Use a Chart Presented by United States Power Squadrons®
Chapter 3 Section 1- Finding Locations on Earth
Copyright 2008 Coast Guard Auxiliary Association, Inc. The Weekend Navigator Basic Level I.
Geography Terms. What am I? Plains- a large flat area of land.
Introduction to Coastal Navigation Coyright 2012 Bruce S. Liese. All rights reserved. Please do not copy or reproduce without permission of author.
Charts for Beginners. Essential Questions What is the difference between a map and a chart? What is the difference between a map and a chart? What are.
Terrestrial Coordinate System
 A. Globe - A scale model of the Earth.  1. Globe vocabulary.
Flotilla Navigation Study Guide Chapter 3: Nautical Chart Instructor: Bob Garrison All Questions and Problems from the Study Guide PowerPoint Presentation.
UWHS Oceanography: Focus on Washington Waters Lynne Buechler.
Models of the Earth Chapter 3. Ch03\80017.html.
Section D-5 Plotting and Labeling
NAVIGATION TRAINING Section 7 Buoyage. Table of Contents Section 1Types of Navigation Section 2 Terrestial Coordinates Section 3 Charts Section 4 Compass.
Mapping Earth Chapter 1 Earth Science. Ch1 L.1 Maps How can a map help determine location? Why are there different map projections for representing Earth’s.
Direction is measured from 000 to 360 clockwise from North
Chartwork 3 rd ClassPaul Brown Chartwork 3 rd Class Buoyage Quick Quiz.
Mapping the SF Bay Overview SF Bay: Know the waterways and bridges.
Parts of a Map.  Most maps have the following elements, which are necessary to read and understand them.
How are Earth’s surface features measured and modeled?
Aim: Latitude and Longitude
Map Skills.
NAUTICAL CHARTS Can anyone explain the purpose of a Nautical Chart?
Basic Map Vocabulary. A map is a graphic representation of a place.
G 1-2 Models of Earth EQ: How do maps and globes represent the Earth?
Topographic & Geologic Maps Plus: Latitude and Longitude!
Map skills.
Position 1 CPF09 v1.4 Copyright © BSAC 2010 Chartwork and Position Fixing Position Fixing Methods.
Measure1 CPF09 v1.3 Copyright © BSAC 2010 Chartwork and Position Fixing Measurement Basics.
Planning 1 CPF09 v1.4 Copyright © BSAC 2010 Chartwork and Position Fixing Voyage Planning.
Tides 1 CPF09 v1.3 Copyright © BSAC 2010 Chartwork and Position Fixing Tides.
Map Skills Notes.
Location To locate areas on Earth with precision, people drew a grid over maps and globes. One of the most important is the equator, which divides.
Geography.
Latitude and Longitude
NAUTICAL CHARTS Who needs them?
United States Power Squadrons'
Geography: The Study of Earth
Key Prompt: Page 15 of ISN Think about a time you went to a new place and had to find your way around. Write about the tools you or your parents used to.
Latitude and Longitude
Longitude and Latitude
Physical Setting Mapping Terms Part 2.
Geography Vocabulary Terms Review.
Objective 1: Students will review geography skills
The Fundamentals of Mapping
America’s Boating Course 3rd Edition
Map Elements.
Geography: The Study of Earth
Map Components Title Grid Compass Rose Key or Legend Scale.
Elements of a Map.
Mapping.
Geography Review.
6th Grade Geography Review.
Mapping the Earth.
Models of the Earth Earth Science Chapter 3.
Latitude and Longitude
Longitude and Latitude
Geography: The Study of Earth
Presentation transcript:

Chart Basics The chart extracts on Chart Basics VA2,3,4,6,7,8,9,12,13,15,21 are NOT TO BE USED FOR NAVIGATION. © Crown Copyright and/or database rights. Reproduced by permission of the Controller of Her Majesty’s Stationery Office and the UK Hydrographic Office (www.ukho.gov.uk). 1

Outline Objectives Availability Scale Chart layout introduction to nautical charts learn to extract information relevant to divers plot and record positions Availability Scale Chart layout Symbols and abbreviations Latitude & longitude Exercises 2

Availability Primarily designed for mariners Paper or digital Main brands Admiralty Imray, Stanford C-Map Navionics BlueChart Chart agents, chandlers, websites Admiralty charts catalogues Notices to Mariners on web 3

Scale Various scales (1:2,500 - 1:20,000,000) small scale - large area - little detail large scale - small area - more detail – best for divers 4

Chart layout Title and number Scale Positions/datum Cautions Source data Corrections Tidal levels Tidal streams Compass rose

Symbols and abbreviations Over 1000 different symbols and abbreviations Chart 5011 For this course colours depths buoys wrecks rocks landmarks nature of seabed tides and currents 6

Colours Dry land is shown as a buff colour Areas that cover and uncover with the tide are green Sea is mainly white, with shallow areas either shades of solid blue or edged in blue 7

Depths 146 sounding 14.6m 15 drying height 1.5m ----10---- depth contour (isobath) 10m merging contours = wall

Buoys Colour and shape, light characteristics Meaning lateral – marks edge of channel cardinal – marks area to avoid others Fl.R Fl.G VQ(6)+L.Fl10s VQ(3)5s Oc.R.4s 10M Lt Lt Ho 9

Buoyage - lateral red = port green = starboard going in direction of rising tide going in direction of falling tide direction of buoyage symbol used where direction not obvious

Buoyage - cardinal N and black Danger W E S yellow VQ or Q VQ or Q(9) VQ or Q (6) + long fl S

Wrecks Wreck which has been swept by wire to the depth shown 15 Wk Wreck which exact depth is unknown, but is considered safe at depth shown 118 Wk Wreck, depth unknown, but is considered dangerous to surface navigation Wreck, depth unknown, not considered dangerous to surface navigation Wreck over which depth obtained by sounding but not by wire sweep 182 Wk Wreck showing any portion of hull or superstructure at level of chart datum 12

Rocks (46) Rock which covers & uncovers, height above chart datum where known Note () show depth is out of position Rock awash at the level of Chart Datum Dangerous underwater rock of known depth (57) Rock which covers & uncovers, height above Chart Datum, where known (18) Underwater rock depth unknown, but considered dangerous to surface navigation Dangerous underwater rock of known depth (156) 13

Landmarks Ch Sp Church Tower Fort with flagstaff Chimney Tanks Water tower, Water tank on a tower Contours Spot heights 14

Nature of seabed Abbreviations for material Qualifying terms R = rock G = gravel S = sand Sh = shells Sn = shingle M = mud, etc Qualifying terms bk = broken f = fine m = medium, etc Used in combination fS.M.Sh? fine sand.mud.shells 15

Meridians of Longitude Grid reference system Parallels of Latitude Meridians of Longitude Parallels of latitude Chart No. 45 Meridians of longitude

Latitude Equator to Pole angle = 90° Parallels of latitude N Equator divides earth into north & south

Longitude Looking down on equator plan from North Pole W E S 30o 60o 0o N S 30o 60o 0o Greenwich Meridian W E

Latitude & longitude Lat & long angles measured in A position degrees° minutes.decimal´ (hemisphere) hemisphere = N, S, E, W A position latitude = 51° 43.250´ N longitude = 002° 59.950´ W 1 degree = 1° = 60 minutes = 60´ Each minute can be subdivided with decimals to any precision required 50°30´N 50°30.2´N 50°30.21´N 50°30.207´N 50°30.20669´N Mapping programs sometimes use decimal degrees 50°30´N = 50.(30/60) = 50.5° Degrees/minutes/seconds becoming obsolete 51° 43.250´ = 51° 43´ 15˝ 19

Latitude & longitude 55°N 4°W 1°E 2` 1` 0` 59` 2` 1` 0` 59` 2` 1` 0` 00 .92’N 1` 54° 59.26’N 003° 59.68’W 55°N 0` 000° 59 .79’E 59` 003° 59 .68’W 54° 59 .26’N 2` 1°E 1` 0` 59` 2` 1` 0` 59` 4°W 20

Summary Availability Scale Chart layout Symbols and abbreviations Latitude & longitude

Chart basics exercises What is the least depth likely to be found at 50°36.70´N 001°55.00´W ? What type of seabed are we likely to find at 50°38.23´ N 001°54.54´ W ? What type of foreshore is likely to be found at CD in position 50°40.30´N 001°59.00´W? What is at the following 2 positions 50°38.53´N 001°54.60´W 50°39.24´N 001°54.97´W ? What is the lat/long of The end of Swanage slipway ‘Bell Buoy’ - cardinal buoy East of Brownsea Island the Flag Staff at Brownsea Castle the Red Lateral buoy off Peveril Ledge? The wreck at: 50°37.47´N 001°56.15´W how deep is it at Chart Datum? how was the depth of the wreck originally determined

Chart basics exercise answers What is the least depth likely to be found at 50°36.70´N 001°55.00´W ? 21.5m (CD) What type of seabed are we likely to find at 50°38.23´ N 001°54.54´ W ? coarse sand/coral/broken shells/pebbles What type of foreshore is likely to be found at CD in position 50°40.30´N 001°59.00´W? marsh, swamp, saltmarsh What is at the following 2 positions 50°38.53´N 001°54.60´W race on ebb stream 50°39.24´N 001°54.97´W ? Tidal Diamond ‘A’ What is the lat/long of The end of Swanage slipway 50°36.47´N 001°56.78´W ‘Bell Buoy’ - cardinal buoy E of Brownsea Island 50°41.38´N 001° 57.10´W the Flag Staff at Brownsea Castle 50°41.30´N 001°57.50´W the red lateral buoy off Peveril Ledge? 50°36.42´N 001°56.10´W The wreck at: 50°37.47´N 001°56.15´W how deep is it at CD? 9.0m (CD) how was the depth of the wreck originally determined? By sounding but NOT by wire sweep

Voyage plan exercise Make the answer to question 5A the start point for your voyage on your voyage plan. Fill in the description and lat/long under Waypoint details.