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S elçuk N as SELÇUK NAS SMALL AREA PLOTTING SHEET This presentation is required office XP Prepared by Selçuk NAS

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S elçuk N as AIM UNDERSTANDING OF DRAWING A UNDERSTANDING OF DRAWING A SMALL AREA PLOTTING SHEET Fixed or Selected Latitude Scale Fixed or Selected Longitude Scale REQUIRED PRIOR KNOWLEDGE AND SKILLS World Coordinate System Projection Systems and Mercator Projection Charts and Charts Scales Positioning Skill Prepared by Selçuk NAS REQUIRED TOOLS AND OTHER AIDS Exercise Papers (A3) Ruler - Divider - Protractor

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S elçuk N as SELÇUK NAS 30 0 N 60 0 N 000 0 030 0 W060 0 W090 0 W Appx. Daily Steaming Distance

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S elçuk N as SELÇUK NAS Plotting sheets are used primarily when land, visual aids to navigation, and depth of water are not important. Small Area Plotting Sheet Small Area Plotting Sheet is cover max 2 0 of differences of latitude There are two alternative methods for constructing Small Area Plotting Sheet Fixed or Selected Latitude Scale Fixed or Selected Longitude Scale

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S elçuk N as SELÇUK NAS 1. Fixed or Selected Latitude Scale 1 0 of dlat = 12 cm Desired Latitudes : 36 0 N – 37 0 N Desired Longitudes : 055 0 E – 057 0 E 36 0 30 1 st step : Draw a horizontal line in the middle of the sheet to represent the middle of latitudes 3 rd step : Draw horizontal lines tangent at the top and bottom of circle to represent latitudes. 2 nd step : Draw a circle with a radius to 1 0 of dlat from centre of the mid-lat line 36 0 00 37 0 00 4 th step : Draw a vertical line through the centre of the circle to represent the middle of longitude. 056 0 00 5 th step : Draw a line, through the centre of the circle, making an angle with the horizontal and equal to the mid latitude. 36 0 30 6 th step : Draw a vertical line through the intersection point of the circle and the line with angle 056 0 30 7 th step : Draw vertical lines to represent other longitudes with the same longitude scale 057 0 00 055 0 30055 0 00 8 th step : Determine minutes scale on the latitude and the longitude scale Your Small Area Plotting Sheet Is Ready To Plot Lets Review The Steps

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S elçuk N as 1 st step : Draw a horizontal line in the middle of the sheet to represent the middle of latitudes 3 rd step : Draw horizontal lines tangent at the top and bottom of the circle to represent latitudes. 2 nd step : Draw a circle with a radius to 1 0 of dlat from centre of the mid-lat line 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 1. Fixed or Selected Latitude Scale 1 0 of dlat = 12 cm Desired Latitudes : 36 0 N – 37 0 N Desired Longitudes : 055 0 E – 057 0 E

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S elçuk N as SELÇUK NAS 2. Fixed or Selected Longitude Scale 1 0 of dlong = 6 cmDesired Latitudes : 29 0 S – 31 0 S Desired Longitudes : 125 0 W – 129 0 W 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. 127 0 126 0 125 0 129 0 128 0 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 horizontal and equal to the mid-lat. 30 0 5 th step : The length between the intersection point A and the intersection of B is a latitude scale. A B 6 th step : Draw additional parallel lines perpendicular to the mid-lat, distance is lenght of A-B 30 0 29 0 31 0 7 th step : Determine minutes scale on the latitude and the longitude scale Your Small Area Plotting Sheet Is Ready To Plot Lets Review The Steps

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S elçuk N as SELÇUK NAS 2. Fixed or Selected Longitude Scale 1 0 of dlong = 6 cmDesired Latitudes : 29 0 S – 31 0 S Desired Longitudes : 125 0 W – 129 0 W 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 horizontal and 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

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S elçuk N as SELÇUK NAS QUESTIONS ?

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S elçuk N as SELÇUK NAS THIS PRESENTATION WAS PREPARED BY SELÇUK NAS E MAIL : snas@deu.edu.tr 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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