In the afternoon, a very light wind at north-east left no prospect of weathering the reef before dark, upon which the high breakers had been seen; we therefore tacked to the E. S. E., and anchored at sunset in 84 fathoms, fine white sand, not far from our noon's situation; a reef, partly dry, was then distant one mile and a half, and bore E. ½ S. to S. E. The flood tide here ran something more than one mile an hour, and came from between north and north-west, the ship tending to it at one in the morning.
FRIDAY 8 OCTOBER 1802
At seven, when the flood had done running, the two vessels were lying up E. N. E., with a light breeze from the northward; but a rippling which extended a mile from the reef, caused us to tack until a boat was sent to sound upon it; for the Lady Nelson was so leewardly, that much time was lost in waiting for her. At ten we passed through the rippling, in from 14 to 34 fathoms; and at noon were in latitude 20° 55', and longitude 150° 55' by time keeper. We seemed at this time to be surrounded with reefs; but it was ascertained by the whale boat, that many of these appearances were caused by the shadows of clouds and the ripplings and eddies of tide, and that the true coral banks were those only which had either green water or negro heads upon them. Of these, however, there was a formidable mass, all round ahead, with but one small channel through them; and this I was resolved to attempt, in the hope of its carrying us out to windward of the high breakers.
At two o'clock, the eastern reef, which was a mile distant to leeward and nearly dry, was seen to terminate, whilst the northern reefs extended out of sight to the north-east; the opening between them was a mile and a half wide, and full of ripplings; but having the whale boat ahead, we bore away E. S. E., to go through the least agitated part. Having little wind, and a flood tide making against us, the boat was called back to tow, and the brig directed to take its station by means of her sweeps. Our soundings were irregular in the narrow part, between 24 and 9 fathoms, on rocky ground; but after getting through, we had from 30 to 32, the usual depth in the open places. At sunset, the stream anchor was dropped on a bottom of coral sand and shells; the reefs then in sight extending from about E. S. E., round by the north to N. W., where was the great northern bank. Whether there were any passage through them, could not be discerned; but the breakers on many of the outer parts proved the open sea to be not far distant, and that the waves ran high; whilst within side, the water was as tranquil as in harbour.
The ship rode north-west, till between eight and nine o'clock, when it appeared to be high water, and the depth was 35 fathoms; at 9h 34' the moon passed the meridian, and we were then riding S. by W., to a tide which ran at the strongest one and a quarter mile per hour. Between three and four in the morning [SATURDAY 9 OCTOBER 1802] this tide had done, the depth was 31 fathoms, and the ship afterwards rode N. N. E. till daylight. The first of the flood therefore came from the N. N. E. and the latter part from N. W.; it was high water at one hour before the moon's passage, and the rise at least three fathoms, or eighteen feet. This time of high water coincides with that of Broad Sound; but it is remarkable, that at the Percy Isles, lying between them, it should be three hours earlier. The rise in Broad Sound was five fathoms, and three, or more, amongst the reefs; whereas at the Percy Isles, there was nothing on the shore to indicate a higher tide than two fathoms.
In the morning we steered E. N. E., with a light air from the southward; the brig was ahead, and at half past nine, made the signal for immediate danger; upon which the stream anchor was dropped in 16 fathoms. The tide ran one mile and a half to the E. N. E, and this leading me to expect some opening in that direction, I sent the master to sound past the brig; and on his finding deeper water we followed, drifting with the tide. At eleven he made the signal for being on a shoal, and we came to, in 35 fathoms, broken coral and sand; being surrounded by reefs, except to the westward from whence we had come. On the outside were high breakers, not more than three or four miles distant; these terminated at E. by S., and between them and other reefs further on, there seemed a possibility of finding an outlet; but no access to it could be had, except by a winding circuit amongst the great mass of banks to the southward, which it was not advisable to make upon such an uncertainty. I therefore determined to remain at the present anchorage till low water, when the reefs would be dry, and the channels between them, if any such there were, would be visible: and should nothing better then present itself, to steer north-westward, as close within the line of the high breakers as possible, until an opening should be found.
The latitude observed to the north and south, at this fifth anchorage amongst the reefs, was 20° 53' 15"; longitude by time keeper, 151° 5' east. In the afternoon, I went upon the reef with a party of the gentlemen; and the water being very clear round the edges, a new creation, as it was to us, but imitative of the old, was there presented to our view. We had wheat sheaves, mushrooms, stags horns, cabbage leaves, and a variety of other forms, glowing under water with vivid tints of every shade betwixt green, purple, brown, and white; equalling in beauty and excelling in grandeur the most favourite parterre of the curious florist. These were different species of coral and fungus, growing, as it were, out of the solid rock, and each had its peculiar form and shade of colouring; but whilst contemplating the richness of the scene, we could not long forget with what destruction it was pregnant.
Different corals in a dead state, concreted into a solid mass of a dull-white colour, composed the stone of the reef. The negro heads were lumps which stood higher than the rest; and being generally dry, were blackened by the weather; but even in these, the forms of the different corals, and some shells were distinguishable. The edges of the reef, but particularly on the outside where the sea broke, were the highest parts; within, there were pools and holes containing live corals, sponges, and sea eggs and cucumbers;* and many enormous cockles (chama gigas) were scattered upon different parts of the reef. At low water, this cockle seems most commonly to lie half open; but frequently closes with much noise; and the water within the shells then spouts up in a stream, three or four feet high: it was from this noise and the spouting of the water, that we discovered them, for in other respects they were scarcely to be distinguished from the coral rock. A number of these cockles were taken on board the ship, and stewed in the coppers; but they were too rank to be agreeable food, and were eaten by few. One of them weighed 47½ lbs. as taken up, and contained 3lbs. 2 oz. of meat; but this size is much inferior to what was found by captains Cook and Bligh, upon the reefs of the coast further northward, or to several in the British Museum; and I have since seen single shells more than four times the weight of the above shells and fish taken together.
[* What we called sea cucumbers, from their shape, appears to have been the bêche de mer, or trepang; of which the Chinese make a soup, much esteemed in that country for its supposed invigorating qualities.]
There were various small channels amongst the reefs, some of which led to the outer breakers, and through these the tide was rushing in when we returned to the ship; but I could not any where see an opening sufficiently wide for the vessels. Low water took place at a quarter past three, which corresponded with the time of high water observed at the preceding anchorage.