The centre hummock is in latitude 20 degrees 27 minutes 30 seconds, and longitude 116 degrees 31 minutes.

In the vicinity of Rosemary and Goodwyn Islands are several small rocky islands, particularly on the north-east side of the former; and at the distance of three miles, to the north of the centre of Malus Island, is a patch of flat rocks, which are those seen and noticed by Dampier (Dampier volume 3 page 81 table 4 Number 10) but from his vague account, it is not at all certain what island he saw; and, was it not for the peculiarity and remarkable appearance of Courtenay Head, it might have been any of the others.

There is good anchorage in all parts about the Archipelago, particularly within Lewis Island, where the Intercourse Islands will shelter a ship from whatever point the wind may blow.
There is no wood of any size to be procured among the islands, which is a great drawback upon its utility as a port.

In the rainy season water is doubtless abundant, but must be soon evaporated.

We saw no rivulet or any fresh water, excepting a few gallons that were protected from the heat of the sun by being under the shade of a fig, but from the number of natives seen by us, it is probable that there must be a large quantity not far off.