In ships on the Atlantic Ocean, at a gathering in Northern Ireland's capital Belfast, and at services around the world, people are commemorating the sinking of the Titanic.
Jane Allen of southwest England is aboard a cruise ship that has been retracing the route of the doomed voyage. Her great-uncle perished on the Titanic.
She says of her memorial journey, "All you could hear was the swell splashing against the side of the ship. You could see the white breakers stretching out to sea."
The Titanic, the world's largest and most luxurious ocean liner, was traveling from England to New York when it struck an iceberg on April 14, 1912. It sank less than three hours later, losing all but 700 of the 2,208 passengers and crew.