Japan's newest luxury cruise ship has officially entered service. Mitsui Ocean Sakura was christened in Yokohama ahead of her maiden voyage on 19 September 2026, making Mitsui Ocean Cruises a two-ship line alongside Mitsui Ocean Fuji, which launched in December 2024.

The 458-guest, all-suite vessel will be familiar to some cruise watchers: she's the former Seabourn Sojourn, reimagined for the Japanese market and renamed after the word for cherry blossom. Every suite has an ocean view, and her compact footprint means she can call at small Japanese ports that big-ship itineraries skip — arguably the main reason to consider her.

The whole operation leans on two Japanese concepts. 'Funatabi' is about immersive travel through Japanese heritage, food and nature, while 'omotenashi' describes intuitive, anticipatory hospitality. In practice that means curated cultural experiences rather than a standard port-hopping cruise. Captain Satoshi Ninomiya, who leads the inaugural season, named the ship at the ceremony on behalf of the crew, breaking the traditional bottle to wish her safe voyages.

Onboard, the headline additions are Sushi Bar Shiosai on Deck 5 — an intimate venue serving multi-course sushi, seasonal small dishes and sake — and the Grand Pool on Deck 8, which has an open-air footbath so guests can soak fully clothed between shore excursions. Fares are genuinely inclusive: suite accommodation, dining, over 200 alcoholic and non-alcoholic drinks, Wi-Fi, entertainment and half-day shore excursions in most ports.

For Australians, there's a hook worth noting. Cruise Traveller, the line's exclusive local representative, has launched five fly-free packages with return flights to Tokyo from Sydney, Melbourne or Brisbane if booked by 30 November 2026. The packages run seven to 12 nights in April and September 2027, starting from AUD$8,799 per person twin-share in a Veranda Suite.

The standout itinerary is a nine-night Yokohama round-trip departing 17 September 2027, timed to Japan's autumn 'Silver Week' holiday period. It loops around Honshu and stops at five ports rarely visited by cruise ships at all: Senzaki, Tottori, Nanao, Kuji and Oarai, from AUD$11,299 per person twin-share.

Japan is one of the hottest cruise destinations going, and most of it is served by large ships doing the same Golden Route ports. This is one of the few genuinely small-ship, culture-first options sailing there, which makes it interesting for travellers who care more about Tottori's sand dunes and Nanao's seafood markets than waterslides and buffets. The fly-free deal also softens the premium price tag, though you'll need to commit well ahead — the booking window closes in late 2026 for 2027 sailings. If a small-suite ship, sake pairings and ports no other line visits sounds like your kind of trip, this is one to shortlist now.