Diamond Princess: built in Japan, based in Japan, and never in North America
Diamond Princess measures 115,875 gross tons and 290.2 m long by 37.49 m at the hull. It has 16 decks, 13 of them open to guests, and 1,353 staterooms, 27 of them wheelchair accessible. It carries 2,670 guests at double occupancy, up to roughly 3,247 with every berth filled, and 1,100 crew. Keel laid on 2 March 2002 at Mitsubishi Heavy Industries in Nagasaki, it was delivered on 26 February 2004. It is based in Yokohama for most of the year and in Singapore over the winter.
Two Japanese hulls, one fire, and a story that circulates backwards
Diamond and Sapphire Princess are the only Princess ships built in Japan. A fire hit the Nagasaki yard in October 2002, and this is where the popular version names the wrong ship. The sources disagree: CruiseMapper says the burned hull was the one intended to be Sapphire, Wikipedia says the opposite. We follow Wikipedia's reading, because it matches the IMO numbers assigned at order, 9228186 for Sapphire and 9228198 for Diamond. The name was transferred to the untouched sister hull, the ship on this page. Today's Diamond Princess was never touched by the fire; the hull that burned was rebuilt and sails as Sapphire Princess.
Yokohama and Singapore, and nowhere else
This ship never comes to North America, which has to be planned for. In 2026 it runs 8- to 29-day round trips from Yokohama, the port for Tokyo, until 25 November: Hokkaido and the Sea of Japan in summer, then autumn colours and Korean ports. On 11 and 25 November it heads for Singapore, and works out of that port from 9 December. In 2027 it returns to Yokohama between 13 February and 1 March and stays there from 16 March to 13 November. From Montréal, expect a connection in Toronto or Vancouver, 15 to 18 hours door to door and a 13-hour time difference. Arrive a day early: Yokohama sits about 30 km from Haneda airport.
A heavily Japanese guest list, and a galley that follows it
Since 2014 it has been based in Japan for most of the year, and its Japanese seasons sail with a heavily Japanese guest list. Service is adjusted: main course portions are deliberately smaller when most guests are Japanese, Kai Sushi and Makoto Ocean serve Edomae-style sushi developed with chef Makoto Okuwa, and the 2019 dry dock fitted Japanese-style toilets on board. For someone who boards because it is Japan, that is a real advantage. For someone expecting a Caribbean Princess sailing, it is an unwelcome surprise by the third meal. The rest of the ship is familiar: four mid-sized main dining rooms, a three-level Piazza, Sabatini's and the Crown Grill for an extra charge, and The Sanctuary, the paid adults-only deck.
February 2020 in Yokohama, stated plainly
Diamond Princess was the site of the first large-scale quarantine of the pandemic. An 80-year-old passenger who boarded at Yokohama on 20 January 2020 and left in Hong Kong on 25 January tested positive on 1 February. The ship was placed under quarantine at Yokohama on 4 February with 3,711 people aboard, passengers and crew. By 16 March at least 712 of them had tested positive, and fourteen deaths had been recorded as of 14 April. Everyone had disembarked by 1 March. Cleared to sail again on 30 March, it left Yokohama on 16 May 2020, after a level-3 deep clean by Belfor and a replacement of mattresses, bedding and draperies.
Two ships to weigh against Diamond Princess
Coral Princess is markedly smaller and it does come to our side of the world, between Alaska, New York and Fort Lauderdale, with the 2027 world cruise from Los Angeles. Island Princess is the one if a full Panama Canal transit interests you more than Asia. The Medallion works here as across the rest of the Princess Cruises fleet, with one caveat: Canadian mobile roaming rarely covers Japan the way it covers the United States.
Who Diamond Princess is wrong for
Anyone who wants an ordinary Princess sailing. Delivered in 2004, it has no cantilevered glass walkway and no glass dome, and its last major dry dock ran from 19 January to 2 February 2019 in Singapore. Stateroom bathrooms are small. It suits neither travellers with young children outside the August departures from Japan, nor anyone booking the cruise without the flight and hotel: at this distance every planning mistake is paid for in travel hours. Finally, from late August to mid-October Japan is in typhoon season, and Princess will occasionally reroute to stay clear of a system.