The area enclosed between:

  1. on the Western side, a straight line between Tanjung Bidadari (5o49′.6N, 118o21′.0E) to position 3o32′.0N,118o57′.0E
  2. on the South Eastern side, a straight line from there to position 5o50′.0N, 122o31′.0E, and thence northwards to position 7o06′.6N, 122o31′.0E
  3. on the Northern side, a straight line from there to Batorampon Point Light (7o06′.6N, 121o53′.8E)
  4. and on the North Western side, a straight line from there back to Tanjung Bidadari