On April 15, on the 100th anniversary of the RMS Titanic’s sinking, an auction house "GUERNSEY'S" in Manhattan will sell off $185-million-worth of items salvaged from the wreck:  the pièce de resistance is a 17-tonne section of the hull ripped clean in the ship’s final violent moments.

Decades later, has the taboo of “graverobbing” worn off?