(*Footnote. Although this hurricane has been noticed, and the Favourite's Log published in the Nautical Magazine, I think it will be useful to continue the practice of entering into some detail respecting every hurricane that came under my observation. This storm, it appears, was encountered off Mangaia, one of the Harvey Isles, lying about midway between the Society and Hapai Groups. The Favourite was in latitude 21 degrees 58 minutes South, longitude 158 degrees 02 minutes West, five miles South-West by West from Mangaia, at noon on the 17th December, 1842, steering West by South 1/2 South before a moderate gale from East-North-East, with cloudy rainy weather. At 3 P.M. she had gone 27 miles, when the wind, which had increased to a strong gale, veering to North-East, the course before it was now South-West; but at the end of another hour, having run eight miles, the wind increased to a storm, and veering again to the eastward, the ship was brought to the wind on the port tack under a main trysail. For the hours 5 and 6, she headed from South to South-West, which would give for the direction of the wind about South-East by East. At 6.30 a man was washed away with the lee quarter-boat. At 8, the wind had veered to South by West, having blown a hurricane, with constant rain for the last hour; at 9 most of the half-ports were washed away, the sea making a clean sweep over the decks. By midnight the wind had subsided to a whole gale; but still veering had reached the West-South-West point, and at 3 the next morning it was blowing only a moderate breeze from West-North-West, with tolerably clear weather. Sail was now made, and a South-West by South course held for 28 miles, when by the noon observation the latitude was 22 degrees 1 minute South, longitude, by chronometer, 158 degrees 44 minutes West. The day following the hurricane the wind was moderate from the westward; and on that previous to it of about the same strength from the northward. The ship's position at noon of the latter day was about 130 miles to the North-East by East of Mangaia Island. The duration of this storm, then, may be considered to have been from 4 P.M. to midnight, in which eight hours the wind had veered gradually from East round by South to West-South-West. The veering being much more rapid between 8 and 9 P.M. when the storm was at its height, the ship must at that time, have been nearer the focus. The tack on which the Favourite was hove to carried her into the course of the hurricane, or rather placed her in a position to be overtaken by it, as it passed along to the southward and westward; but as the ship broke off to the westward and northward, she fell out of its north-western edge. Doubtless, if a West-North-West course had been pursued in the first instance, or at noon on the 17th, the Favourite would have avoided the storm. It is to be regretted that the barometer was broken in the commencement of the hurricane, when it was unusually low, having been falling for some time before. Besides this, there was ample warning in the unusually gloomy lurid appearance of the sky; the weather also was misty, with showers of rain as the ship approached the course of the storm.)
BANKS STRAIT.
Leaving Sydney, we resumed our work to the southward; and towards the end of October anchored under Swan Island, lying midway on the south side of Banks Strait, which trends West by North, with a width of twelve miles, a length of seventeen, and a depth of from 16 to 25 fathoms; it is formed by the north-east point of Tasmania and the islands lying to the south of Flinders. Barren Island, one of the latter, has a remarkable peak at its south-eastern end, and some high rounded hills on the north-western; it is twenty-two miles in extent, lying in an east and west direction. It is separated from Flinders by a channel, which I named after Sir John Franklin, four miles wide, thickly strewed with islands and shoals. The eastern entrance is almost blocked up by sandbanks, extending off five miles and a half from a large island (called by us after the Vansittart, but known to the sealers by the name of Gun-carriage Island) and leaving only a narrow, shifting passage of 2 and 4 fathoms between their northern side and Flinders Island. The anchorages which lie in the western part of Franklin Channel are not so sheltered as those between Barren and Clarke Islands. The latter has two rounded summits, the highest 690 feet, resembling a saddle, either from west or east. The rugged peaks of Strzelecki, reaching an elevation of 2,550 feet, rise immediately over the northern point of the west entrance of Franklin Channel.
BLACK REEF.
The north-east extreme of Tasmania is singularly low, with a coastline of sandhills. Out of this level tract rise Mounts William and Cameron; the latter, 1,730 feet high, is the highest of a group of peaks, cresting a ridge, whilst the former is a solitary pyramidal hill, 730 feet high, used as a guide for craft in working through the strait. When it bears South by West, vessels may close with the south shore, being then past the Black Reef,* and the rocks that lie off the coast to the eastward, as far as Eddystone Point. The most outlying and remarkable are the St. George's Rocks, a cluster of grey granite boulders, 66 feet high; a patch of moored kelp, however, on which the water sometimes breaks, lies three miles East-South-East from the Black Reef. The principal danger on the northern side of the eastern entrance of the strait is Moriarty Bank, which extends off four miles and a half east from the south-east point of Clarke Island; there is, however, a narrow passage of 16 fathoms close to the latter. This Bank, which has a couple of rocks near its north-eastern part, is steep to, and may be avoided by keeping the south point of Clarke Island, to bear to the southward of West 12 degrees North. Mount William, also, bearing South 7 degrees West clears the outer end of it.
(*Footnote. This reef is a low, dark, rocky islet, with reefs extending off North 45 degrees West three quarters of a mile, and South 56 degrees East, one mile. There is a passage of 7 fathoms, a mile wide, between it and the main, through which the highest St. George's Rock, bearing South 52 degrees East, leads. Black Reef bears from the latter North 45 degrees West, six miles and a half, and from the summit of Swan Island, South 53 degrees East, eight miles and three-quarters. Mount William, also, bears from it South 22 degrees West.)
I may here mention, that the importance of Banks Strait is great, as all the trade between Hobart, Launceston, and Port Phillip, passes through it.
SWAN ISLAND.
Swan Island is a narrow hummocky strip of land, a mile and a half long, trending South-West by West; the loftiest part, 90 feet high, near the north end,* was selected by Sir John Franklin for the site of a lighthouse, the foundation of which he laid, after resigning the reins of government; it was the last benefit he was able to confer on the colony.
(*Footnote. In latitude 40 degrees 43 minutes 36 seconds South, longitude 3 degrees 5 minutes 50 seconds West of Sydney, and 148 degrees 10 minutes 10 seconds East of Greenwich; variation, 10 east.)