Furzey Island theorized that Green Island was a centre of production that exported its goods to continental Europe. This theory lends further evidence to Green Island having once been an important port. Furzey Island Furzey Island is an island in Poole Harbour in the English county of Dorset. The island lies to the south of the larger Brownsea Island. Seen from the water, or adjoining land, the island looks like another wild pineclad island. However, hidden in the trees are twenty-two oil wells split into 2 well-sites for the Wytch Farm Oil Field, which is linked by pipeline to Hamble on Southampton
Brownsea Castle another device in 1544 to further improve the country's defences, particularly along the south coast. The castle was built on the south-east corner of Brownsea Island between 1545 and 1547 to protect the entrance of the busy Poole Harbour. The island belonged to the Crown, having been confiscated from Cerne Abbey during the Dissolution of the Monasteries a few years before. It was a conservative design, being a one-storey, square blockhouse, reported in 1552 to be across, able to support guns on its roof and sub-divided into three rooms; the blockhouse was originally intended to have been two storeys in