Prince William took a speedboat ride across Tokyo Harbour this morning after arriving in Japan for a four-day visit.
The Duke of Cambridge will be taken to the area devastated by the tsunami, as part of the trip, but some have claimed he will not meet families whose lives were blighted when the tsunami triggered the Fukushima nuclear disaster in 2011.
Soon after the second-in-line to the throne's scheduled flight touched down at Tokyo's Haneda airport, Kensington Palace confirmed he had completed the last of his exams to earn his Air Transport Pilot Licence and would start work with East Anglian Air Ambulance in the summer.
Highlights of William's trip to the Far East will include a visit to Beijing's Forbidden City and in Shanghai he will launch the three-day Great Festival of Creativity.
Prince William in Tokyo at the start of a four-day visit of Japan.
Kensington Palace tweeted a photograph of the Prince's arrival by boat:
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Kensington Palace, the official residence of the Duke and Duchess of Cambridge, has launched its own Twitter feed.
Giving few clues of what to expect in the future, the palace tweeted:
Hello from Kensington Palace! Welcome to our new Twitter account.
This account represents The Duke and Duchess of Cambridge and Prince Harry - follow for updates on their work and the #RoyalFoundation
The new account joins @BritishMonarchy for news relating to Buckingham Palace and the Royal Family, and @ClarenceHouse representing the Prince of Wales and Duchess of Cornwall.
It gained almost 4,000 followers in its first half hour of existence.
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The Duke of Cambridge paid tribute to his former univeristy in New York, saying that, "St Andrew's blend of academic excellence, mixed with a liberal approach to critical thought and creative reasoning, is one that both our nations, on both sides of the Atlantic, credit with importance."
Prince William was giving a speech at a benefit for the Scottish university at the Metropolitan Museum of Art in New York, which attended with the Duchess of Cambridge, the pair met while studying at St Andrew's.
The Duke and Duchess of Cambridge have joined fellow alumni of St Andrew's University at an event in New York.
Prince William made a solo visit to the Empire State Building as part of his three-day New York trip.
Wearing only a suit, the cold did not appear to bother the Duke of Cambridge as he was shown the view.
As the royal couple arrived two days ago the top of the building was lit up in red, white and blue to signify the colours of the British flag.
William and Kate's visit to the 9/11 memorial in New York has made headlines around the world, helping keep the memory of that tragic day alive.
Nearly 3,000 people, including 67 Britons, lost their lives in the attacks 13 years ago.
ITV's Royal Correspondent Tim Ewart reports:
The Duke and Duchess of Cambridge visited the newly built One World Trade Center after their visit to the 9/11 memorial.
The tower, which at 1,792 ft is the tallest building in America, opened this year replacing the twin towers which were demolished in the 9/11 attacks 13 years ago.
William and Kate also visited youth development centre, The Door. to meet young people who have benefited from their training programmes.