Istanbul Harbour Administrative Area is the sea and shore area bounded by Turkish territorial waters between a line from (a) coordinate below to true 055  and a line
from (b) coordinate to North (360) in the North and the sea and shore area in the north side of the line joined by (c), (d), (e) and (f) coordinates below in the South.

a) 41-35-00K, 028-09-00D (stanbul-Tekirda provincial border) 
b) 41-14-00K, 029-15-30D  (Kelagra Point)
c) 40-54-05K, 029-08-56D (Maltepe Point)
d) 40-43-30K, 029-09-24D
e) 40-43-30K, 028-43-24D
f) 40-58-18K, 028-43-24D (Kefaldalyan Point)

stanbul Liman dari Sahas, kuzeyde aadaki (a) koordinatndan hakiki 055 istikametine izilen hat ile (b) koordinatndan hakiki kuzey (360) istikametine izilen hat
arasnda kalan ve Trk Karasular ile snrlanan ky ve deniz alan ile gneyde aadaki (c) , (d) , (e) ve (f) koordinatlarnn oluturduu hattn kuzeyinde kalan deniz ve
ky alandr.
 
a) 41-35-00K, 028-09-00D (stanbul-Tekirda il snr) 
b) 41-14-00K, 029-15-30D  (Kelagra Burnu)
c) 40-54-05K, 029-08-56D (Maltepe Burnu)
d) 40-43-30K, 029-09-24D
e) 40-43-30K, 028-43-24D
f) 40-58-18K, 028-43-24D (Kefaldalyan Burnu)
