The Seikan Tunnel (Japanese: 青函トンネル Seikan Tonneru or Japanese: 青函隧道 Seikan Zuidō) is a 53.
Sea mark
A sea mark, also seamark and navigation mark, is a form of aid to navigation and pilotage aid which identifies the approximate position of a maritime channel, hazard and administrative area to allow boats, ships and seaplanes to navigate safely.
Rance Tidal Power Station
The Rance Tidal Power Station is a tidal power station located on the estuary of the Rance River in Brittany, France.
Breakwater (structure)
Breakwaters are structures constructed on coasts as part of coastal defense or to protect an anchorage from the effects of both weather and longshore drift.
Channel Tunnel
The Channel Tunnel (French: Le tunnel sous la Manche; also nicknamed and shortened to Chunnel) is a 50.
Japan–Korea Undersea Tunnel
The Japan–Korea Undersea Tunnel (also Korea–Japan Undersea Tunnel) is a proposed tunnel project to connect Japan with South Korea via an undersea tunnel crossing the Korea Strait using the strait islands of Iki and Tsushima, a straight-line distance of approximately 128 kilometers (80 mi) at its shortest.
Artificial island
An artificial island or man-made island is an island that has been constructed by people rather than formed by natural means.
Shipyard
A shipyard (also called a dockyard) is a place where ships are repaired and built.
Underwater habitat
Underwater habitats are underwater structures in which people can live for extended periods and carry out most of the basic human functions of a 24-hour day, such as working, resting, eating, attending to personal hygiene, and sleeping.
Brighton Marina
Brighton Marina is an artificial marina situated in Brighton, England.
Trabucco
The trabucco (Italian pronunciation: [traˈbukko] or trabocco; in some southern dialects called travocc) is an old fishing machine typical of the coast of Abruzzi region (specially in the Trabocchi Coast or Costa dei Trabocchi) and also in the coast of Gargano, where it is protected as historical monuments by the homonym National Park.
Dredging
Dredging is an excavation activity usually carried out underwater, in shallow seas or freshwater areas with the purpose of gathering up bottom sediments and disposing of them at a different location.
Submarine communications cable
A submarine communications cable is a cable laid on the sea bed between land-based stations to carry telecommunication signals across stretches of ocean.
Wave Organ
The Wave Organ is an acoustic sculpture constructed on the shore of San Francisco Bay in May 1986 by the Exploratorium.
Lake Shore Drive
Lake Shore Drive (colloquially referred to as the Outer Drive, but also sometimes as The Drive or LSD) is a mostly freeway-standard expressway running parallel with and alongside the shoreline of Lake Michigan through Chicago, Illinois, USA.
Indian Rivers Inter-link
The Indian Rivers Inter-link is a proposed large-scale civil engineering project that aims to link Indian rivers by a network of reservoirs and canals and so reduce persistent floods in some parts and water shortages in other parts of India.
Williams Field
Williams Field or Willy Field (ICAO: NZWD) is a United States Antarctic Program airfield in Antarctica.
Rainbowing
Rainbowing is the process in which a dredging ship propels sand that has been claimed from the ocean floor in a high arc to a particular location.
Samphire Hoe Country Park
Samphire Hoe Country Park is a country park situated 3 km (2 miles) west of Dover in Kent in southeast England.