Section 18(1) in The Port Rules for the Port of Bombay
(1)Off the land of Thull.That area comprehended between the maintained of Thull and the following boundary line.On the North and East. - From a buoy placed at the intersection of the lines Butcher Island Tree in transit with Trombay Ruin and the line of Prongs Light House and the North end of Kansa Island, to the North Point of Kansa Island and from thence along the West shore of Kansa Inland to the South Point, thereof, from thence along a straight line to Kunkeshwar Peak to where it crosses the East Port limit and from thence the East Port limit to the foreshore near Thull Knob.On the West. - From the buoy marking the Western end of the North Limit along the line of Butcher Island Tree in transit with Trombay Ruinto the point where it intersects the line of Thull Knob Beacon in transit with North Pap Beacon and from that point South (True) to the West Point of Undari Island.On the South. - Along the South Port Limit from the South Point of Undari Island to the maintained.This area is liable to restriction to conform to the exigencies of the defence of the port and is required to be cleared of craft as necessary during Heavy gun practice.
