Concept

Poole Harbour

Résumé
Poole Harbour is a large natural harbour in Dorset, southern England, with the town of Poole on its shores. The harbour is a drowned valley (ria) formed at the end of the last ice age and is the estuary of several rivers, the largest being the Frome. The harbour has a long history of human settlement stretching to pre-Roman times. The harbour is extremely shallow (average depth ), with one main dredged channel through the harbour, from the mouth to Holes Bay. Poole Harbour has an area of approximately . It is one of several which lay claim to the title of "second largest natural harbour in the world" (after Port Jackson, Sydney). In 1964 during harbour dredging, the waterlogged remains of a 2000-year-old Iron Age logboat were found off Brownsea Island. Dated at about 295 BC, the Poole Logboat is one of the largest vessels of its type from British waters. Its low freeboard would have limited its use to within Poole Harbour. Poole was used by the Romans as an invasion port for the conquest of southern England, who established the settlement at Hamworthy, now the western half of Poole. A Roman Road ran north from Hamworthy to Badbury Rings, a Roman transport hub. At the time of the Norman Conquest, Poole was a small fishing village. The port grew, and in 1433 Poole was made Dorset's Port of the Staple for the export of wool. Medieval Poole had trading links from the Baltics to Italy. In the 17th century, the town began trading with North America, in particular Newfoundland, and the town became very wealthy. In the 18th century, Poole was the principal British port trading with North America. At the start of the 19th century, 90% of Poole's population's employment was directly dependent on the harbour, but this dropped to 20% during the century as the railways reached the town, and deep-hulled boats moved up the coast to Southampton, which had a deeper harbour and is closer to London. With regular dredging of a channel through the harbour, it has regained some importance. During WW2, Poole Harbour hosted seaplane bases.
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