I proceeded up the opening in a boat, and lieutenant Murray got under way to follow with the brig; but the tide ran up so rapidly, over a bottom which was rocky and very irregular in depth, that he anchored almost immediately, and came to the middle islet where I was taking angles. We then went over to the west shore, and ascended a hill called in the chart, _Hill View_; from whence it was evident, that this water did certainly communicate with the bight round Gatcombe Head, and by an opening much more considerable than that in which the vessels were anchored; the port was also seen to extend far to the westward, and I was induced to form a regular plan for its examination. The northern entrance being too full of rocks and shoals for the Lady Nelson to pass, although drawing no more than six feet when the keels were hoisted up, Mr. Murray was desired to go round to the southern opening; and about sunset he got under way. FRIDAY 6 AUGUST 1802 Early in the morning I went off in the whale boat, with two days provisions, and made nearly a straight course up the port, for a low point on the south shore called _South-trees Point_. The water was very shallow, with many rocks and dry banks, until the southern entrance was fairly open, when the depth varied between 7 and 3 fathoms; but there was from 6 to 8 close to the low point. This forms the inner part of the southern entrance, and Gatcombe Head, the outer part, lies from it S. 64° E. about four miles; from the head southward, however, the width of the channel is much less, being contracted by banks which extend out from the opposite shore. Seeing nothing of the brig, I proceeded in the examination, steering westward for a small island four or five miles up the port. This is the southernmost of six islets, lying behind the point of Hill View, and from one of two hillocks upon it, another set of bearings was taken. The depth of water thus far, had varied from 8 fathoms, to six feet upon a middle shoal; after which it deepened to 3, 4, and 7 fathoms, and there was 10 close to the southern islet. The Lady Nelson made her appearance off Gatcombe Head about noon; but not waiting for her, I went to a point on the northern shore, near two miles higher up, where the water was so deep that a ship might make fast to the rocks and trees: the soundings were very irregular from the southern islet, but the least depth was 5 fathoms.