PND's dock and harbor designs are found throughout Alaska and along the U.S. West Coast. They have been built in some of the world's most severe wave and ice environments and typically utilize a combination of research and practical experience. PND is also involved in the design of such floating and fixed off shore structures as navigation buoys, mooring dolphins, and transmission line supports. Using its innovative foundation systems, PND develops socks, piers, bulkheads, deepwater buoy systems and trestles that exceed the capacity of conventional designs while complying with today's strict seismic codes. PND has also been involved with the reburial of exposed submarine pipelines in Alaska's unique, aggressive Cook Inlet.