The largest ship ever built is christened in Ireland before a cheering crowd of 100,000.

Witness the disaster this trek becomes as numerous iceberg warnings go unheeded and the ship sinks in the icy North Atlantic.

Overpacked lifeboats edge away from the crippled liner as futile SOS signals flare into the night--leaving 1,500 passengers to a watery grave. Also, witness the courageous deep sea expedition to unearth Titanic's secrets.

The extraordinary aftermath of the disaster is revealed in a courageous deep sea expedition.