Pembroke Dock is a town and a community in Pembrokeshire, South West Wales, 3 miles northwest of Pembroke on the banks of the River Cleddau. Originally Paterchurch, a small fishing village, Pembroke Dock town expanded rapidly following the construction of the Royal Navy Dockyard in 1814. The Cleddau Bridge links Pembroke Dock with Neyland. After Haverfordwest and Milford Haven, Pembroke Dock is the third-largest town in Pembrokeshire being more populous than neighbouring Pembroke.