12 h 59 min, 20 nov 1963 ans - First Multibeam Sounding
Description:
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 lineAjouté au bande de temps:
Date:
12 h 59 min, 20 nov 1963 ans
Maintenaint
~ Il y a 60 ans
