12 h 59 m, 20 nov 1963 año - First Multibeam Sounding
Descripción:
The first operational multibeam sounding system is installed on the USNS Compass Island. This system observes a number of soundings to the left and right of a ship’s head as well as vertically. This is important because it is the development of a relatively accurate map of the sea floor as the ship proceeds on a survey lineAñadido al timeline:
fecha:
12 h 59 m, 20 nov 1963 año
Ahora mismo
~ 60 years ago
