This was Red Island.

Other points shortly rose behind it: hill after hill came up into view, at a distance looking like islands, which indeed many of them were; but, on a nearer approach, the parts connecting the others became visible, and the mainland of this vast insular continent gradually revealed itself to our anxious eyes.
MAKING THE LAND.
We stood on until eleven A.M.; but in making land there always rests a certain degree of anxiety upon the mind of the seaman and traveller, more especially when that land is imperfectly known.

As there appeared to be every chance of our losing the sea-horizon, and consequently our noon observation, if we stood on and the breeze continued, our course was changed to the other tack until that hour; and then having correctly ascertained our position, Red Island bearing south-east by east, distance 8 miles, we once more stood in for the land.
Red Island is small, rocky, and of no great elevation; its colour is a very dark red; the sides are precipitous, and in its centre is a clump of trees which cannot be seen until you have run by the island, as it falls gradually from the south-west to the north-east, so that the north-east side is the least elevated.

We sounded when about seven miles to the north-west of it, and found bottom at twenty-five fathoms, of green sandy mud.
The sandbank laid down on the Admiralty charts to the north-east of Red Island is small and barren; it is very low, and at some distance looks like a white rock in the water; being apparently an island formed of the same rock as the former, and topped with quartz or white sand.

In entering Hanover Bay, or Port George the Fourth, a good course is to run nearly midway between this and Red Island.