Section 18(4) in The Port Rules for the Port of Bombay
(4)Off Colaba.(a)That area comprehended within the following boundary lines.On the North. - A straight line drawn from the Dolphin Rock Lighthouse is the North Colaba Beacon.On the East. - A straight line drawn from the Dolphin Rock Lighthouse to the Sunk Rock Lighthouse.On the South. - A straight line drawn due East from the South Colaba Beacon until it meets the line drawn from the Dolphin Rock Lighthouse to the Sunk Rock Light house.On the West. - A straight line drawn from North to South Colaba Beacon.(b)That area comprehended between the shore and the following boundary lines.On the North. - From the shore to a position, a distance of about 3 cables along a straight line drawn from the Observatory Anemometer Dome to the Sunk Rock Lighthouse and thence to the South end of the Oyster Rock along the line Prongs Lighthouse and the South end of Oyster Rock and from the north point of Oyster Rock on an extended line drawn form the end of the Pier at Pilot Bunder through the North end for Oyster Rock of about 4 cables to the East Limit.On the East. - A straight line drawn from the Dolphin Rock Lighthouse to the Sunk Rock Lighthouse, and thence a straight line from the Sunk Rock Lighthouse to the Prongs Reef Buoy.On the South. - A straight line drawn West (True) from the Prongs Reef Buoy to the line of Thull Knob Beacon in transit with the North Pap Beacon and thence along that transit line to the West Port Limit.The Northern boundary Westward of the Prongs Lighthouse is subject to rights acquired by the Development Department.This area is liable to restriction to conform to the exigencies of the defence of the port and is required to be cleared of crafts as necessary during heavy gun practice.
