The harbour, first recorded in the 11th century, in its current form dates to rebuilding in the 1730s. The current structure is identified as belonging to a collection of similarly constructed quays dating to the late 17th and early 18th centuries. The distinguishing characteristic of quays of this period in south and west Cornwall is the use of a distinctive engineering tradition of vertically coursed battered drystone masonry, probably developed from and related to smaller scale Cornish hedging techniques. Pounded by heavy seas the vertically laid stones channeled the force of the water upwards thereby reducing the impact on the overall defensive structure.