Over 5 km of breakwater were constructed to protect the harbour.

A stone breakwater protects the harbour from the ocean.

It was originally built as a Byzantine fort to protect the harbour.

The peninsula that had protected the harbour was nowhere to be seen.

It was built during the 15th century to protect the harbour of the city.

Dartmouth Castle's artillery blockhouse, dated to 1481, was constructed to protect the harbour.

Further work was done to protect the harbour in the 1980s by building a breakwater to the western side of the harbour.

Two break waters, 1,890m and 590m long to protect the harbour.

A 400m long breakwater protects the harbour.

On the sea front itself you can see the seventeenth century fort built to protect the harbour and settlement from pirate attacks.