Cobalt Estuary – Nagasaki & Keelung

About this cruise

A lot can happen in 4 nights. This sailing from Nagasaki on August 29, 2026 visits Keelung and Busan and makes every day count. You get off in Busan, which is a good excuse to tack on a few days on land. The 2 sea days in between leave time for the pool, the spa, or whatever else you feel like doing between ports. Bullet trains visible from the harbour, cherry blossoms, and thousands of years of history. East Asia is a lot to take in. Don't rush through Busan, which is known as Temples on the mountain, fish markets by the sea. At 114,147 gross tons, Costa Serena is big enough that you can find a quiet corner or a crowd, depending on your mood. The timing works well too: warm evenings on deck, late sunsets, and a lively atmosphere. All told, 2 ports across 4 nights covers a lot.