Terrestrial and Coastal Navigation (TCN)

• DGS EXAMINATION FORMAT

• Navigation - Basic Terminologies

• Shape of Earth

• Great Circle, Small Circle

• Spherical Triangle

• Earth's Axis

• Poles

• Equator

• Meridians

• Latitude and Parallels of Latitude

• Prime Meridian

• Longitude

• Difference of Latitude and Difference of Longitude

• Geographical, Statute and Nautical Mile

• Comparison with Kilometre

• Cable and Knot

• Charts

• Natural Scale

• Meridional Parts

• Chart Catalogue

• Mercator Charts, Gnomonic Charts and Plan Charts

• Procedures for Correction of Charts and Publications including T and P Notices

• Using Notices to Mariners and corrections using tracings

• Chart Folio and Chart Correction Log

• Datums

• Axis of Rotation

• Directions by Gyro Compass

• Magnetic Compass

• Compass Corrections - Deviation, Variation, Compass Error and Transit bearings

• Distance between two positions on a Mercator chart

• Position Lines and Positions

• Position Line and Positions - Basics

• Position Line and Positions

• Vertical and Horizontal Sextant Angles

• Plane and Mercator Sailings

• Departure, D’lat and Distance Relationship

• True Course

• Rhumb Line

• Parallel Sailing Formula

• Use of Traverse Table

• Day's Work Exercises

• Calculate Slip

• Mercator Sailing

• Chartwork

• Allowing and Counteracting Current and Leeway

• Tidal Stream

• Running Fix (Transfer of Position Lines Circles)

• Finding Out Actual Set and Rate of Current

• Information from Nautical Charts

• Lists of Lights and Other Publications

• Symbols and Abbreviations used on Admiralty Charts - Publication 5011

• Tide Tables

• IALA System of Buoyage

• Geographical Range, Luminous Range, Nominal Range

• Raising Dipping and First Last Sighting Distances

• Ides

• Range, Duration and Height of Tides

• Spring and Neap Tide

• Standard and Secondary Port

• Heights for Intermediate Times & Vice-Versa

• Using tidal stream atlas

• Obtaining Current Direction and Rate From Approach Charts

• Keeping a Log

• Procedures for Keeping Log During Ocean Passages

• Procedures for Keeping Log During Coastal Navigation

• Procedures for Keeping Log at Anchor

• Passage Planning

• Introduction to Passage Planning

• Appraisal

• Planning

• Execution (During Voyage)

• Monitoring

• Great Circle Sailing

• Using Gnomonic Chart to Plot a Great Circle Track and Transferring it to a Mercator Chart

• Obtaining Initial and Final Course and Finding Vertex

• Calculating the Great Circle Distances