Yoshizaki, Hiroo (2022-04-28). "消息不明の知床観光船は「かつて瀬戸内海を航海した船」か 船舶情報を独自入手してわかった事実〈dot.〉" [The disappeared Shiretoko cruiser was possibly "originally a ship sailing in the Seto Inland Sea" what we uncovered based on the ship data]. AERA dot. (in Japanese). [[Asahi Shimbun. Archived from the original on 2022-05-28. Retrieved 2022-12-20.
"沈んだ船は「ひかり八号では」「外海で使われるとは」…穏やかな海を高速で走るための船だった" [Sunken ship "could it be Hikari 8" "I never expected her to be used on the open sea"... She was a ship that was supposed to sail the calm sea at high speed.] (in Japanese). Yomiuri Shimbun. 2022-05-24. Archived from the original on 2022-05-23. Retrieved 2022-12-20.
Yoshizaki, Hiroo (2022-04-28). "消息不明の知床観光船は「かつて瀬戸内海を航海した船」か 船舶情報を独自入手してわかった事実〈dot.〉" [The disappeared Shiretoko cruiser was possibly "originally a ship sailing in the Seto Inland Sea" what we uncovered based on the ship data]. AERA dot. (in Japanese). [[Asahi Shimbun. Archived from the original on 2022-05-28. Retrieved 2022-12-20.
"【動画】知床 航行する船の映像 遭難事故前の観光船か". NHK. 2022-04-26. Archived from the original on 2022-04-26. Retrieved 2024-11-05.{{cite news}}: CS1 maint: bot: original URL status unknown (link)
日本放送協会. "【詳細】知床 観光船遭難 事故の経緯は | NHK". NHK News (in Japanese). Archived from the original on 2022-04-25. Retrieved 2022-04-27.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
"沈んだ船は「ひかり八号では」「外海で使われるとは」…穏やかな海を高速で走るための船だった" [Sunken ship "could it be Hikari 8" "I never expected her to be used on the open sea"... She was a ship that was supposed to sail the calm sea at high speed.] (in Japanese). Yomiuri Shimbun. 2022-05-24. Archived from the original on 2022-05-23. Retrieved 2022-12-20.
ナギーブモスタファ (reporter Nagib Mustafa) (Apr 20, 2023). "桂田精一社長の今 知床観光船沈没事故から１年 追悼式典「呼ばれてないから行けない」【誓いの海】Katsurada Sei'ichi shacho no ima: Shiretoko Kankosen chinbotsu jiko kara ichinen: tsuitoshikiten "Yobaretenai kara ikenai" Chikai no Umi" [CEO Sei'ichi Katsurada today: one year since the Shiretoko Pleasure Cruise Boat Incident: memorial service "Since I haven't been asked, I won't be going" Oceanic Buddhist Vow]. YouTube (in Japanese). ＨＢＣニュース (北海道放送 Hokkaido Broadcasting). Retrieved November 9, 2023. (1:16) Number of recovered bodies. (3:50) wind speed rating. The "Oceanic Great Vow" of the video title refers to the Bodhisattva vow, referring to (6:50), CEO Katsurada told journalist Nagib Mustafa that once every month he writes the names of the victims on a tablet(s), goes to the Buddhist temple of an acquaintance, and participates in a memorial service. "I can't do anything more than this."
