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OpenSeaMap measures water depths by crowdsourcing. Sailors, motor boaters, divers, and fishermen can collect water depths between 0 and 100 m with sounder tools and GPS. Divers work with a dive computer. Coastal water, lakes and rivers are surveyed. Result will be an elevation model and derived depth lines.
Google Maps has added virtual ferry rides to its Street View of Sydney, Australia, offering a glimpse of what daily life is like for Australians who boat past the Sydney Opera House on their ...
Depths are measured in a variety of ways. Historically the sounding line was used. In modern times, echo sounding is used for measuring the seabed in the open sea. When measuring the safe depth of water over an entire obstruction, such as a shipwreck, the minimum depth is checked by sweeping the area with a length of horizontal wire.
Topographic maps display elevation above ground and are complementary to bathymetric charts. Bathymetric charts showcase depth using a series of lines and points at equal intervals, called depth contours or isobaths (a type of contour line). A closed shape with increasingly smaller shapes inside of it can indicate an ocean trench or a seamount ...
Google Maps Street View Trekker backpack being implemented on the sidewalk of the Hudson River Greenway in New York City. In late 2014, Google launched Google Underwater Street View, including 2,300 kilometres (1,400 mi) of the Australian Great Barrier Reef in 3D. The images are taken by special cameras which turn 360 degrees and take shots ...
The beams update many times per second (typically 0.1–50 Hz depending on water depth), allowing faster boat speed while maintaining 100% coverage of the seafloor. Attitude sensors allow for the correction of the boat's roll and pitch on the ocean surface, and a gyrocompass provides accurate heading information to correct for vessel yaw. (Most ...
A section of the Intracoastal Waterway in Pamlico County, North Carolina, crossed by the Hobucken Bridge Inland Waterways, Intracoastal Waterways, and navigable waterways. The Intracoastal Waterway (ICW) is a 3,000-mile (4,800 km) inland waterway along the Atlantic and Gulf of Mexico coasts of the United States, running from Massachusetts southward along the Atlantic Seaboard and around the ...
The Indian River is a 121-mile (195 km) long [1] brackish-water lagoon on Florida's eastern Atlantic coast. [2] It is part of the Indian River Lagoon system, which in turn forms part of the Atlantic Intracoastal Waterway. It was originally called Río de Ais by the Spanish, after the Ais tribe who lived along the east coast of what is now Florida.