15 April 2012 Last updated at 17:16

In pictures: Titanic memorial events

A rose rests on the new Titanic Memorial Plaque

Belfast, the city that built the Titanic, has unveiled a memorial garden containing the names of all of the victims who died when the liner sank in the Atlantic, 100 years ago.

Shadows of people observing a minute's silence at the Belfast memorial garden

The Belfast memorial garden contains a nine-metre-wide plinth bearing five bronze plaques engraved with the names of the victims. It is the first time the names of everyone who died have been recorded on one monument.

Jack Martin, 12, after the unveiling of the new memorial

The memorial was unveiled by 12-year-old Jack Martin, the great, great nephew of the ship's doctor, Dr John Simpson. He said he was proud to be keeping the memory of his ancestor alive.

A cruise ship visits the disaster site 100 years after the Titanic hit an iceberg in the western Atlantic Ocean. Two cruise ships, the MS Balmoral from Southampton and the Azamara Journey from New York, met at the site.

Passengers participate in a memorial service, marking the 100th anniversary of the Titanic disaster, aboard the MS Balmoral

Wreaths were thrown into the Atlantic at the site of the wreck from MS Balmoral, while passengers also held a minute's silence.

A wreath floats after being thrown into the sea during a service of remembrance aboard the Titanic Memorial Cruise

About 1,300 passengers, ranging from millionaires to poor emigrants, and about 900 crew were on board the Titanic when it sank on its maiden voyage.

Two women hold candles during an anniversary event at the Grand Parade in Halifax, Nova Scotia

Events marking the disaster were held in Halifax, the Canadian port city from where ships sailed to retrieve bodies from the icy Atlantic waters.

People gather at Fairview Cemetery in Halifax

Some 150 of Titanic's 1,514 victims are buried at Fairview Cemetery in Halifax.

The Titanic Drums perform at a commemorative concert at Belfast's Waterfront Hall

On Saturday night, a commemorative concert at Belfast's Waterfront Hall brought together stars from music and film, including the Titanic Drums, Joss Stone and Bryan Ferry.

Ceremony at the statue of Edward Smith, the Titanic's captain

In Lichfield, Staffordshire, 1,500 candles were laid at the foot of the statue of Edward Smith, the Titanic's captain, which has stood in the town's Beacon Park since 1914.

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In pictures: Titanic memorial events

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