Tudor Castles on and around the Isle of Wight, UK Content from the guide to life, the universe and everything

Tudor Castles on and around the Isle of Wight, UK

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View across the water to Yarmouth Castle.

When King Henry VIII left the Catholic church in 15381, there was, in Britain, a very serious threat of invasion. Francis I of France and Emperor Charles V of Spain2 signed a treaty, and the Pope encouraged both nations to invade and attack. Although internal matters in both nations prevented them from invading straight away, the threat remained. So in the 1540s, an extensive campaign to fortify England was begun, with many of these forts on or around the Isle of Wight.

In 1497, the first dry-dock3 in Britain had been built in Portsmouth, and this made it the home of the Royal Navy. It also made it one of the prime targets for invasion, and Henry VIII's strategy was to defend all harbours, and to deny the enemy any harbour or anchorage that could be used to establish a base from which to organise a more serious assault. Four castles were built on the Isle of Wight; Sandown, East Cowes Castle, West Cowes Castle, and Yarmouth, with Sharpenode blockhouse built over the Needles Passage. On the Mainland near the Isle of Wight, Hurst Castle, Calshot Castle, Southsea Castle, Netley Castle and St Andrew's Point blockhouse were built to support this.

Sandown Castle

Not to be confused with Sandown Castle in Deal, Sandown Castle, Isle of Wight, was built between Sandown and Yaverland on the Isle of Wight. Sandown Castle was built to defend the only bay on the southern side of the island where a fleet could successfully land. Sandown Castle's design was simply that of a square, with two squares in the corners, and was started in 1544. It was still being built during the French invasion of 1545 - when the Mary Rose4sank, and French invaders reportedly fought defenders over the foundations of the castle. However, the castle was built too near the sea, and by the 1580s was unusable and was abandoned. It has since been eroded by the sea, and the remains of it can sometimes be seen as a pile of rocks on low tide, opposite Fort Street, a road named after it.

The Cowes Castles

In 1540, the Earl of Southampton took a boat into the river Solent to note where the wind and tide influenced ships, and from this determined the sites of Calshot and East and West Cowes Castles. East Cowes Castle was abandoned only seven years after it was finished, and no longer exists. West Cowes castle - a round tower with short, single storey rectangular wings to the east and west, forming a D to the front with a rectangular walled ditch to the back - is now part of the Royal Yacht Squadron clubhouse, and is visible on the promenade.

Southampton Water Castles

There were three forts built in Southampton Water: Calshot Castle, Netley Castle and St Andrew's Castle. Calshot Castle, the nearest the Solent and the sea, was built as a circular tower with a multi-angular curtain wall, and has a command over the entrance to Southampton Water. Two miles north, on the entrance off Southampton Water and onto the River Hamble lay St Andrew's Point blockhouse. It was a high square tower, and has since been completely eroded by the sea. Three miles further up Southampton Water, though, was Netley Castle. Built in 1543, its design was very similar to Southsea Castle, and was built by Lord St John.

The Needles Passage Castles

On the West side of the island, the Needles Passage was also defended. Mainly by Hurst Castle on the mainland, built on a shingle spit that extends into the middle of the Solent. It was one of the biggest castles of its time, with it being a 12-sided tower with three half-round bastions projecting beyond salient angles of the curtain wall. On the Isle of Wight, the Passage was defended by the existing Worsley's Tower, built in the 1520s, which had a squat, octagonal structure and was described by the Earl of Southampton as 'one of the worst devised things' he'd ever seen. Sharpenode blockhouse was also built to defend it, and that was a square with two acutely angled triangular salients at either corner of the landward side.

Yarmouth and Southsea Castles

Yarmouth Castle was built to defend the port of Yarmouth on the Isle of Wight, and originally was built as a square, walled enclosure surrounded by a ditch, with a triangular bastion on the south-eastern corner. It was expanded in the 1560s, but it is the earliest surviving angle-bastioned fortification in the British Isles and is open to the public most days.

Southsea Castle was built to defend Portsmouth and the surrounding area, and has a square keep with two expanded gun platforms on either side of the keep, extending from the corners. It was built in 1544, and commanded the channel between Spit Sand and Portsea.

1King Henry abandoned the Catholic church because of the Pope's refusal to grant him a divorce from his first wife, Catherine of Aragon.2Emperor Charles V was the nephew of Catherine of Aragon.3A dry-dock is a place where the water can be drained in order to fix the hull of a ship.4The Mary Rose was the pride of Henry VIII's fleet.

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