S elçuk N as SELÇUK NAS SMALL AREA PLOTTING SHEET This presentation is required office XP Prepared...
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Selçuk Nas SELÇUK NAS SMALL AREA PLOTTING SHEET This presentation is required office XP Prepared by Selçuk NAS
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Transcript of S elçuk N as SELÇUK NAS SMALL AREA PLOTTING SHEET This presentation is required office XP Prepared...
Selçuk NasSELÇUK NAS
SMALL AREA PLOTTING SHEET
This presentation is required office XP
Prepared by Selçuk NAS
Selçuk Nas
AIM 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 KNOWLEDGEREQUIRED PRIOR KNOWLEDGE AND SKILLS AND SKILLS
World Coordinate System Projection Systems and Mercator Projection
Charts and Chart’s ScalesPositioning Skill
Prepared by Selçuk NAS
REQUIRED TOOLS AND OTHER AIDSREQUIRED TOOLS AND OTHER AIDS
Exercise Papers (A3)Ruler - Divider - Protractor
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300 N
600 N
0000 0300W 0600W 0900W
Appx. Daily Steaming Distance
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Plotting sheets are used primarily when land, visual aids to navigation,
and depth of water are not important.
Small Area Plotting SheetSmall 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 Latitude Scale
Fixed or Selected Longitude Scale
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1. Fixed or Selected Latitude Scale
10 of dlat = 12 cmDesired Latitudes : 360 N – 370 NDesired Longitudes : 0550 E – 0570 E
360 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 10 of dlat from centre of the mid-lat line
360 00’
370 00’
4 th step : Draw a vertical line through the centre of the circle to represent the middle of longitude.
0560 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.
360 30’
6 th step : Draw a vertical line through the intersection point of the circle and the line with angle
0560 30’
7 th step : Draw vertical lines to represent other longitudes with the same longitude scale
0570 00’0550 30’0550 00’
8 th step : Determine minutes scale on the latitude and the longitude scale
Your Small Area Plotting Sheet Is Ready To PlotLet’s Review The Steps
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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 10 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 angle7 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
10 of dlat = 12 cmDesired Latitudes : 360 N – 370 NDesired Longitudes : 0550 E – 0570 E
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2. Fixed or Selected Longitude Scale10 of dlong = 6 cm Desired Latitudes : 290 S – 310 S
Desired Longitudes : 1250 W – 1290 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.
1270 1260 12501290 1280
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.
300
5 th step : The length between the intersection point A and the intersection of B is a latitude scale.
AA
BB
6 th step : Draw additional parallel lines perpendicular to the mid-lat, distance is lenght of A-B
300
290
310
7 th step : Determine minutes scale on the latitude and the longitude scale
Your Small Area Plotting Sheet Is Ready To PlotLet’s Review The Steps
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2. Fixed or Selected Longitude Scale10 of dlong = 6 cm Desired Latitudes : 290 S – 310 S
Desired Longitudes : 1250 W – 1290 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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QUESTIONS ?
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THIS PRESENTATION WAS PREPARED THIS PRESENTATION WAS PREPARED BY SELÇUK NASBY SELÇUK NAS
E MAIL : E MAIL : [email protected]
Mobile Phone : 0 532 331 51 31Mobile Phone : 0 532 331 51 31
Phone : 0 90 232 278 22 30Phone : 0 90 232 278 22 30
Address : Dokuz Eylul Universitesi, Deniz İsletmeciligi ve Address : Dokuz Eylul Universitesi, Deniz İsletmeciligi ve Yonetimi Yuksekokulu, Kaynaklar Yerleskesi, Buca, Izmir, Yonetimi Yuksekokulu, Kaynaklar Yerleskesi, Buca, Izmir,
TURKEY TURKEY
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