When overseas trade for spices and other precious commodities sparked bitter rivalries, charts became instruments of wealth and power. At various times, the Dutch, Portuguese, Venetians, and the Spanish used their superior knowledge of the oceans to gain the upper hand.
| Title | Secrets of the Sea |
|---|---|
| Genres | Documentary |
| Release Date | 1991-04-08 |
| Episode Runtime | 00 Hours 54 Minutes |
| Season Number | 1 |
| Episode Number | 2 |
| Production Companies |
