-
256
Eratosthenes ( bc )
-
Mar 4, 1394
Prince Henry the navigator
-
Jan 7, 1480
Ferdinand Magellen
-
Jan 7, 1490
Sonar
made first by de vinvi -
Benjamin Franklin
-
James cook
-
Matthew Maury
-
challenger expedition
-
Pytheas ( bc )
-
Bathysphere
1928 was when it was first made -
Ptolemy
