The Japan Coast Guard plans to build its biggest ever patrol ship in an effort to boost its capability to respond to disasters and other emergency situations, officials said Tuesday.

The coast guard's existing biggest patrol ship is 150 meters long and weighs 6,500 tons. The new ship will be around 200 meters long and will weigh about 30,000 tons.

Expected to be put into commission in fiscal 2029, the new vessel will be used to transport disaster relief goods and evacuate residents during contingencies including a possible conflict over Taiwan.

The total construction cost is estimated at ¥68 billion. Of the total, the coast guard will seek ¥3.43 billion in funding for fiscal 2025, which begins next April.

The new vessel will have enough room to transport over 1,000 people during an emergency, as well as space to park large vehicles, including ambulances and buses. It will also be able to store three helicopters.

In peacetime, the new ship will be used for maritime security operations during major international conferences. It may also be used for patrols in Japanese waters around the Senkaku island chain in the East China Sea.

The coast guard's fiscal 2025 budget request totals a record ¥293.5 billion, up 12% from the fiscal 2024 budget.