129
From March to the beginning of September gales of wind from N. W. to S. W. may be expected on the coast. They usually commence at N. N. E., and are always preceded by very great depression of the barometer. As they haul round to the westward, they are accompanied by heavy squalls of wind and rain, and generally blow most heavily when at N. W. Before the wind gets to the S. W. the glass is seen to rise suddenly, and the change generally takes place in a heavy squall; after which the weather becomes clear and moderate.
Ships should not run for the land during a gale, unless they are well acquainted with it, and certain of, their latitude and longitude. In running for the land, in blowing weather, I have often been certain of my reckoning by the soundings.
The appearance of Rottnest and Garden Island is low and sandy; but, in clear weather, the main land will be seen distinctly over them.
The distance from Owen’s Anchorage to Scott’s Jetty, in Fremantle Bay, is about two miles and a quarter.
King George’s Sound, with its Harbours.
In running into King George’s Sound there is no danger through either channel. A spit runs off the N. E. end of Michaelmas Island, but shoals gradually to the shore. After you are inside the Island, you may anchor in any part of the Sound in moderate weather. There are two secure Harbours in the Sound, Princess Royal and Oyster; the former will admit ships drawing eighteen or nineteen feet water; the latter vessels drawing ten feet. Wood, water, and ballast, may be obtained at both places.
(Signed)William Preston.