Sunday marks the 100th anniversary of one of the most memorable cruise ship disasters in history.

The Titanic sank April 15, 1912, after striking an iceberg off the Newfoundland coast during it's maiden voyage from England to New York, killing more than 1,500 passengers.

Events to commemorate the tragedy have been celebrated across the country. James Cameron's 1997 Oscar-winning movie "Titanic" has been re-released in 3-D at theaters and IMAX locations.

An American ship the Journey and a European cruise liner, the MS Balmoral, each hosted memorial cruises to retrace the Titanic's voyage.

Tuesday night, 440 passengers boarded the U.S. ship on New York's West Side en route to Halifax, Nova Scotia to visit the graves of 100 Titanic victims.

The ship will continue to the place where the Titanic currently rests to hold a memorial service. Along the way, passengers will hear historical lectures and dine at a costume-themed dinner.

This week lawmakers moved to protect the wreck site. The R.M.S. Titanic Maritime Memorial Preservation Act would charge a fine up to $250,000 and five days imprisonment to any American vessel that disturbs the wreckage without permission.