It is in latitude 15 degrees 14 minutes 40 seconds, and longitude 124 degrees 41 minutes 35 seconds.
Between High Bluff and Point Adieu, in latitude 15 degrees 14 minutes 10 seconds, and longitude 124 degrees 34 minutes 45 seconds, is PORT GEORGE THE FOURTH, having midway in its entrance a high island nearly two miles long; and to the southward, in the centre of the port, a high rocky islet, the LUMP, the summit of which is situated in latitude 15 degrees 18 minutes 30 seconds, and longitude 124 degrees 37 minutes 50 seconds.
The western side of the port is an extensive island, AUGUSTUS ISLAND, eleven miles long; it is high and rocky, and has several bays on its eastern side.

The port affords very good anchorage, particularly between Entrance Island and the Lump, in nine fathoms, mud; but there is also very good anchorage with the Lump bearing west, in ten fathoms, mud.

Port George the Fourth terminates in a strait, ROGER'S STRAIT, communicating with Camden Bay.

The best entrance to the port is on the eastern side of Entrance Island; for the opposite, although practicable and sufficiently deep for the largest ships, is narrow, and must be buoyed before it can be used.
POINT ADIEU is the last land seen by us in 1820: it is the north-east end of Augustus Island, and is a rocky, bluff point.

In the offing, at the distance of three miles, there is a considerable range of reefs, that extend from the peaked island of Jackson's Isles; and more to the north-west is another group of rocky islands.
To the westward of Augustus Island is a range of islands extending for five leagues; on their north side they are fronted by considerable coral reefs, which at low water are dry; besides which there are several small islets that contract the channels, and render the navigation intricate and difficult.