The west-going stream is stronger than the east-going stream everywhere in the Western Solent, but the rates differ considerably in different parts of the channel thus, near mid-channel off Lymington banks the spring rate of the east-going stream is 2.2 knots, and of the west-going stream 2.5 knots, the corresponding rates between Solent banks and Salt Mead ledges are 3.0 and 3.2 knots, and off Lepe Middle 3.4 and 3.5 knots, respectively. The times at which they begin vary very slightly in different parts of the channel, and, at a position 0.9 mile 342° from Egypt point, the east-going stream, spring rate 2.1 knots, neap rate 1.1 knots, begins +0445 Portsmouth (+0500 Dover) the west-going stream, spring rate 2.6 knots, neap rate 1.3 knots, begins -0110 Portsmouth (-0055 Dover). TIDAL STREAMS – From off Hurst point to about a line Stansore point to Egypt point the streams run in about the direction of the channel. The streams gain and lose strength very quickly the rate of the east-going stream is 3 knots, or more at springs from about +0610 till -0300 Portsmouth (-0600 till -0245 Dover) the rate of the west-going stream is 3 knots or more at springs from about -0030 till +0330 Portsmouth (-0015 till +0345 Dover).Ī strong eddy runs eastward along the land southward of Hurst point, and there are ripples on the northern edge of the Shingles, during the west-going stream. At a position half a mile 254° from Hurst Point low lighthouse the east-going stream, spring rate 3.4 knots neap rate 1.7 knots, begins +0445 Portsmouth (+0500 Dover) the west-going stream, spring rate 3.5 knots neap rate 1.7 knots, begins -0115 Portsmouth (-0100 Dover). In the channel the streams are strong and run in about the direction of the channel. TIDAL STREAMS – In the western approach to North channel, at a position in about 3½ miles 279° from Hurst Point low lighthouse, the east-going stream mean direction 092°, spring rate one knot neap rate 0.5 knot, begins +0445 Portsmouth (+0500 Dover) the west-going stream, mean direction 269°, spring rate one knot neap rate 0.5 knot, begins -0115 Portsmouth (-0100 Dover). During the south-west-going stream an eddy runs strongly eastward near the land southward of Hurst point. The North channel and Needles streams meet and separate south-eastward and southward of Hurst point, where there may be turbulence when the streams are strong, especially during the north-east going stream. The north-east-going stream runs strongly on the Isle of Wight side of the channel, and round Alum, Totland and Colwell bays there is little stream in these bays during the south-west-going stream. At the southern end of the channel the streams run strongly across the Bridge. On the western side of the channel a set may be experienced, away from or towards the Shingles according to the direction of the stream there are overfalls on the south-eastern edge of the Shingles during the north-east-going stream. TIDAL STREAMS – The streams run about north-eastward and south-westward, in the direction of the channel and attain their greatest rates between Hurst point and Albert fort, where, in about mid-channel, the north-east-going stream begins +0450 Portsmouth (+0505 Dover), and attains its greatest rate, 3.9 knots at springs, 1.9 knots at neaps, -0500 Portsmouth (-0445 Dover) the south-west-going stream begins -0110 Portsmouth (-0055 Dover), and attains its greatest rate, 4.5 knots at springs, 2.2 knots at neaps, +0230 Portsmouth (+0245 Dover). The position of the race varies with the direction of the stream, and moves eastward with the east-going stream, westward with the west-going stream. Anyway, along the western side of the head the stream runs nearly continuously south-eastward, and a race, which may be violent and may extend as much as 2½ miles seaward, when both stream and wind are strong and their directions opposite, forms off the head. Alban’s head, but the head is less prominent than the bill so the eddies are smaller further, on account of the shape of the coast, only the eddy on the western side is of any importance. Alban’s head the east-going stream, direction 120°, begins -0100 Devonport (+0545 Dover) the west-going stream, direction 275° to 290°, begins +0525 Devonport (-0015 Dover) greatest rate in both directions 4.5 to 4.8 knots.Įddies, similar to those off Portland peninsula (see Portland Tidal streams), form off St. TIDAL STREAMS – About three-quarters of a mile offshore southward of Lulworth cove the east-going stream, spring rate 1.6 knots, begins -0150 Devonport (+0455 Dover) the west-going stream, spring rate 1.7 knots, begins +0410 Devonport (-0130 Dover).Ībout 1¼ miles southward of St.
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