On August 1, 2025, the passenger ship 'THUNDER BIRD' operated by Shikoku Kisen Co., Ltd. carried 85 passengers, exceeding the maximum capacity of 80 as specified in the ship's inspection certificate, from Miyaura Port to Takamatsu Port. On August 22, 2025, an audit conducted by the Maritime Transport Bureau's Operations and Labor Supervisor found violations of the Marine Transportation Act and safety management regulations, including that the operations manager did not report the number of passengers onboard to the captain. On November 11, 2025, the Shikoku Transport Bureau issued an order to the operator, including a directive that the captain must not carry passengers or others beyond the maximum capacity, in accordance with Article 18 of the Ship Safety Act.

On August 1, 2025, the passenger vessel 'THUNDER BIRD' operated by Shikoku Kisen Co., Ltd. transported 85 passengers, exceeding the maximum capacity of 80 as specified in the vessel inspection certificate, from Miura Port to Takamatsu Port. On August 22, 2025, an audit conducted by the Maritime Transport Bureau's Operations and Labor Supervisor under the Marine Transportation Law confirmed violations of laws and safety management regulations, including that the operations manager did not report the number of passengers onboard to the captain. On November 11, 2025, the Shikoku Transport Bureau issued an order to the company, including a directive that the captain must not carry passengers or others beyond the maximum capacity in accordance with Article 18 of the Marine Safety Law.

On April 8, 2025, the passenger ferry 'Asahi' operated by Shikoku Kisen Co., Ltd. collided with a quay at Miyoura Port while attempting to dock with 70 passengers onboard, resulting in one injury. An audit conducted on May 13, 2025, by the Maritime Transport Law enforcement officer of the Shikoku Transport Bureau confirmed violations of safety management regulations, including failure to execute incident handling procedures. On August 5, 2025, the Shikoku Transport Bureau issued a warning to the company, including a reminder that the captain must, based on Article 44 of the Safety Management Regulations, take all necessary measures to ensure safety, prevent the expansion of the accident, and alleviate passenger anxiety, and must promptly notify the operations manager and maritime safety authorities of the incident and measures taken, as stipulated in the accident handling standards.

On April 8, 2025, the passenger ferry 'Asahi' operated by Shikoku Kisen Co., Ltd. collided with a quay at Miyoura Port while attempting to dock with 70 passengers onboard, resulting in one injury. An audit conducted on May 13, 2025, by the Maritime Transport Bureau's Operations and Labor Supervisor confirmed violations of the Marine Transportation Law, including failure to process the accident properly and violations of safety management regulations. On August 5, 2025, the Maritime Transport Bureau issued a warning to the company, including a reminder that the captain must, based on Article 44 of the safety management regulations, take all necessary measures to ensure safety, prevent the expansion of the accident, and reassure passengers, and must promptly notify the operations manager and maritime safety authorities of the accident situation and measures taken, as stipulated in the accident handling standards.