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SMALL AREA PLOTTING SHEET

SMALL AREA PLOTTING SHEET. Prepared by Selçuk NAS. This presentation is required office XP. AIM UNDERSTANDING OF DRAWING A SMALL AREA PLOTTING SHEET Fixed or Selected Latitude Scale Fixed or Selected L ongitude Scale. Prepared by Selçuk NAS. REQUIRED PRIOR KNOWLEDGE AND SKILLS

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SMALL AREA PLOTTING SHEET

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  1. SMALL AREA PLOTTING SHEET Prepared by Selçuk NAS This presentation is required office XP

  2. AIM • UNDERSTANDING OF DRAWING A SMALL AREA PLOTTING SHEET • Fixed or Selected LatitudeScale • Fixed or Selected LongitudeScale Prepared by Selçuk NAS REQUIRED PRIOR KNOWLEDGE AND SKILLS World Coordinate System Projection Systems and Mercator Projection Charts and Chart’s Scales Positioning Skill REQUIRED TOOLS AND OTHER AIDS Exercise Papers (A3) Ruler - Divider - Protractor

  3. 600 N Appx. Daily Steaming Distance 300 N 0900W 0600W 0300W 0000

  4. Plotting sheets are used primarily when land, visual aids to navigation, and depth of water are not important. Small Area Plotting Sheet is cover max 20 of differences of latitude There are two alternative methods for constructing Small Area Plotting Sheet Fixed or Selected LatitudeScale Fixed or Selected LongitudeScale

  5. 370 00’ 360 30’ 360 30’ 360 00’ 0560 00’ 0550 00’ 0550 30’ 0570 00’ 1. Fixed or Selected LatitudeScale 10 of dlat = 12 cm Desired Latitudes : 360 N – 370 N Desired Longitudes : 0550 E – 0570 E 1 st step : Draw a horizontal line in the middle of the sheet to represent the middle of latitudes 2 nd step : Draw a circle with a radius to 10 of dlat fromcentre of the mid-lat line 3 rd step : Draw horizontal lines tangent at the top and bottom of circle to represent latitudes. 4 th step : Draw a vertical line through the centre of the circle to represent the middle of longitude. Your Small Area Plotting Sheet Is Ready To Plot Let’s Review The Steps 5 th step : Draw a line, through the centre of the circle, making an angle with the horizontal and equal to the mid latitude. 6 th step : Draw a vertical line through the intersection point of the circle and the line with angle 7 th step : Draw vertical lines to represent other longitudes with the same longitude scale 8 th step : Determine minutes scale on the latitude and the longitude scale 0560 30’

  6. 1. Fixed or Selected LatitudeScale 10 of dlat = 12 cm Desired Latitudes : 360 N – 370 N Desired Longitudes : 0550 E – 0570 E 1 st step : Draw a horizontal line in the middle of the sheet to represent the middle of latitudes 2 nd step : Draw a circle with a radius to 10 of dlat fromcentre of the mid-lat line 3 rd step : Draw horizontal lines tangent at the top and bottom of the circle to represent latitudes. 4 th step : Draw a vertical line through the centre of the circle to represent the middle of longitude. 5 th step : Draw a line, through the centre of the circle, making an angle with the horizontal and equal to the mid latitude. 6 th step : Draw a vertical line through the intersection point of the circle and the line with angle 7 th step : Draw vertical lines to represent other longitudes with the same longitude scale 8 th step : Determine minutes scale on the latitude and the longitude scale

  7. 2. Fixed or Selected LongitudeScale 310 290 300 300 1270 1260 1250 1280 1290 10 of dlong = 6 cmDesired Latitudes : 290 S – 310 S Desired Longitudes : 1250W – 1290W 1 st step : Draw a vertical line in the middle of the sheet to represent the middle of longitudes. 2 nd step : Draw vertical lines to represent other longitudes with the same longitude scale. B 3 rd step : Draw a horizontal line in the middle of the sheet to represent the middle of latitudes. 4 th step : Through the intersection of the mid-lat and mid-long, draw a line making an angle with the horizontaland equal to the mid-lat. A Your Small Area Plotting Sheet Is Ready To Plot Let’s Review The Steps 5 th step : The length between the intersection point A and the intersection of B is a latitude scale. 6 th step : Draw additional parallel lines perpendicular to the mid-lat, distance is lenght of A-B 7 th step : Determine minutes scale on the latitude and the longitude scale

  8. 2. Fixed or Selected LongitudeScale 10 of dlong = 6 cmDesired Latitudes : 290 S – 310 S Desired Longitudes : 1250W – 1290W 1 st step : Draw a vertical line in the middle of the sheet to represent the middle of longitudes. 2 nd step : Draw vertical lines to represent other longitudes with the same longitude scale. 3 rd step : Draw a horizontal line in the middle of the sheet to represent the middle of latitudes. 4 th step : Through the intersection of the mid-lat and mid-long, draw a line making an angle with the horizontaland equal to the mid-lat. 5 th step : The length between the intersection point A and the intersection of B is a latitude scale. 6 th step : Draw additional parallel lines perpendicular the mid-lat, distance is lenght of A-B 7 th step : Determine minutes scale on the latitude and the longitude scale

  9. QUESTIONS ?

  10. THIS PRESENTATION WAS PREPARED BY SELÇUK NAS E MAIL : snas@deu.edu.tr Mobile Phone : 0 532 331 51 31 Phone : 0 90 232 278 22 30 Address : Dokuz Eylul Universitesi, Deniz İsletmeciligi ve Yonetimi Yuksekokulu, Kaynaklar Yerleskesi, Buca, Izmir, TURKEY You can use all my product where ever you want.

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