Terrestrial and Coastal Navigation (TCN)

Course Topics

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

DGS EXAMINATION FORMAT

SECOND MATE (F.G.) Maximum Marks: 200

Duration: 3 hrs. Pass Marks: 140

Note:

Use chart - ------. And Admiralty tide tables for 1992
Ship’s speed --------, HE ------m, Var -----, Deviation card -----

TERRESTRIAL AND COASTAL NAVIGATION

PART A

QUESTION NO.1 IS COMPULSORY. ATTEMPT ANY TWO QUESTIONS FROM THE REMAINING THREE QUESTIONS: (30 MARKS EACH)

PASSAGE PLANNING
PLOTTING
PLOTTING
PLOTTING

(Running fix with combination of terrestrial and celestial observations, fixing position using three bearings, three point bearings, horizontal sextant angle, raising and dipping of lights, first sighting and last sighting of lights, allowing and counteracting current, tidal streams, wind and leeway).

PART B
ALL QUESTIONS ARE COMPULSORY:

DAYS WORK (30 MARKS)
GREAT CIRCLE/ PLANE/MERCATOR SAILING. (30 MARKS)
TIDE CALCULATIONS (30 MARKS)
CHART CORRECTION /CHART SYMBOLS/OTHERS (20 MARKS)

Please note that the above format is only an indicative of the examination paper. The candidates are advised to refer to detailed teaching syllabus and the course outline.

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