The anchorage of the Downs is sheltered from west winds by the mainland and from east winds by the dreaded Goodwins. They thus form a natural and useful breakwater towards the east, creating the anchorage of the Downs.
In an easterly gale, notwithstanding the protection of the Goodwins, there is a very heavy and even tremendous sea in the Downs, for the Goodwin Sands lie low in the water, and when they are covered by the tide—as they always are at high water—the protection they afford is much diminished.
The 'sheltered' anchorage of the Downs is thus a relative term. Even in this shelter vessels are sometimes blown away from their anchors both by easterly and westerly winds.
In 1703 thirteen men-of-war were lost in the Downs in the same gale in which Winstanley perished in the Eddystone Lighthouse of his own construction, and I have seen vessels in winds both from east and west driven to destruction from the Downs. Even of late years I have seen 450 vessels at anchor in the Downs, reaching away to the north and south for nearly eight miles.
Their appearance is most imposing, as may be judged from the engraving on page 95, in which, however, only twenty-five ships are visible in the moonlight. Almost all the ships in the engraving are outward bound, and some, it may be, are on their last voyage.
Outside, and to the cast of this great fleet of vessels, lies the great 'shippe-swallower,' the Goodwin Sands. The sands are very irregular in shape, and are not unlike a great lobster, with his back to the cast, and with his claws, legs, and feelers extended westwards towards Deal and the shipping in the Downs. Far from the main body of the sands run all manner of spits and promontories and jaws of sand, and through and across the Goodwins in several directions are numbers of 'swatches,' or passages of water varying in depth from feet to fathoms.
No one knows, or can know, all the swatches, which vary very much month by month according to the prevalence of gales or fair weather. I shall never forget the sensation of striking bottom in one of those swatches where I expected to find, and had found recently before in the same state of the tide, a depth of six feet. The noise of broken water on each side of us, and the ominous grating thump of our boat's keel against the Goodwins, while the stumps of lost vessels grinned close by, gave us a keen sense of the nearness of real peril. We were bound to the East Goodwin lightship, and in the path of duty, but we were glad to feel the roll of deep water under our boat's keel outside the Goodwins.
No one therefore knows, or can know, by reason of the perpetual shifting of the sands, all the passages or swatches, either as to direction or depth, of the Goodwins; but two or three main swatches are tolerably well known to the Deal and Ramsgate lifeboatmen.
There is a broad bay called Trinity Bay in the heart of the Goodwins, out of which leads due north-east the chief swatch or passage through the Sands. It is four or five fathoms deep at low water, and from about three-quarters to a quarter of a mile wide, and it is called the Ramsgate Man's Bight. Close to the outer entrance of this great passage rides, about twelve feet out of water, the huge north-east Whistle buoy of the Goodwins, which ever moans forth in calmest weather its most mournful note.
Sometimes when outside the Goodwins on my way from the North Goodwin to the East Goodwin lightship, we have passed so close to this great buoy that we could touch it with a boat-hook, and have heard its giant breathing like that of some leviathan asleep on the surface of the sea, which was dead calm at the time. I have also heard its boom at a distance of eight miles.