Around the Senkaku Islands in Okinawa Prefecture, Chinese Coast Guard vessels sailed almost daily in the contiguous waters just outside the territorial waters last year. The time for a single intrusion into territorial waters is also the longest ever, and the Japan Coast Guard is strengthening its security system by increasing the number of large patrol boats.

According to the Japan Coast Guard, last year, Chinese Coast Guard vessels were spotted in the contiguous waters just outside the territorial waters for 352 days, the highest number ever.

The time of a single entry into the territorial waters was 1 hours and 3 minutes, the longest since nationalization, when it entered the territorial waters in March and April.

Regarding the Chinese Coast Guard vessels sailing around the Senkaku Islands, ▽ Since January last year, it has been confirmed that when they enter the territorial waters, they send out external messages on the Coast Guard's website, etc., and ▽ Since March last year,
AIS = Automatic Ship Identification System has been activated.
It has also been confirmed that the location information of the ship is transmitted.

It is a movement that has not been seen before, and it seems that there is an aim to appeal its presence in the surrounding waters.

In light of this situation, the Japan Coast Guard is strengthening its security system, including increasing the number of large patrol vessels by five to 4 by FY80.