Engineering Drawing-2nd year GROUP-III (Vessel Navigator - 01 Trade)

By iti | 6:28 PM IST, Fri July 31, 2026

• 1.Construction of scales and diagonal scales
• 2.Basic Navigational Chart Work Practice Introduction of a navigational chart. Various type of navigational chart. Parallel Ruler and instruments used. Measurement of distance, sea miles, International nautical mile, geographical mile.
• 3.Great circle, parallels of latitude and Longitudes. Important features of Mercator chart. Simple plotting of position and measurement of distance. 
  • Variation, Deviation, Conversion of compass course to true course.
• 4.Conversion of true course to compass course. Calculation involving
  • deviation, variation, and compass error. A few terms associated with chart work, symbols and Abbreviations
• 5.True bearing, compass bearing, abeam bearing. Current, wind and its effects. Allowing current and leeway.
• 6.To counter act current and wind. Find actual current experienced.
• 7.Method of fixing the ship position by bearing and depth, bearing and distance by vertical sextant angle, horizontal angle or Radar Given: course steered engines speed direction and rate of current wind and leeway to find course and speed made good. Give: Initial position / final position to
  • find set and rate of drift Transfer position line and simple running fix.
• 8.ADVANCED NAVIGATIONAL CHART WORK PRACTICE Transfer of position
  • line and running fix with current. Running fix with current and leeway.
• 9.Transfer to position line while makes more than one course to given running fix. To find course to steer to counteract the current and leeway.
• 10.To find course to steer and speed to steer in order to maintain the required ETA in prevailing current. Three bearing method to find course made good
• 11.To find CMG direction by three bearing of same object from different position.[only set is given rate is not known]
• 12.To find CMG direction by three bearing of same object from different position[both set and rate is given]
• 13.Dipping and rising bearing of lights[dipping range or rising range]
• 14.To find true set and drift [actual set and rate of current experienced]
• 15.Tide problems
• 16.To arrive with a given point right ahead at extreme range.
• 17.Nautical publications.