Cenotaph for Seikan Ferry Disaster Victims

The Cenotaph for Seikan Ferry Disaster Victims (青函連絡船海難者殉難碑) stands beside the hiking trail on the slopes of Mount Hakodate, near the Hakodate Gokoku Shrine. It was erected in August 1953 by Japanese National Railways staff and volunteers to honor the ferry crew members who perished in the American carrier-based air raids of July 14-15, 1945.

On July 14, 1945, carrier aircraft of US Navy Task Force 38 attacked shipping in Aomori Bay, the Tsugaru Strait and Hakodate Bay in repeated waves from the early morning. The attacks continued on July 15. Of the 12 Seikan ferries in operation (4 passenger vessels and 8 cargo/vehicle ferries), 10 were sunk or burned, and the remaining 2 were heavily damaged — effectively destroying the entire fleet. Japanese accounts give 352 dead on July 14 alone, and 424 crew members and passengers killed in the attacks in the Tsugaru Strait and Hakodate Bay on July 14–15.

The strategic impact was enormous: the Seikan ferry line was the sole rail-sea link between Hokkaido and Honshu, transporting vital coal from Hokkaido's mines to fuel Honshu's war industries. The destruction of the ferry fleet sharply reduced coal shipments, delivering a crippling blow to Japan's already faltering industrial production. It has been described as one of the most strategically effective air attacks of the Pacific War.

Following the Toya Maru typhoon disaster of September 26, 1954 — in which five ferries including the Toya Maru sank in Hakodate Bay with the loss of 1,430 lives — the names of those victims were added to the cenotaph. A nameplate salvaged from the sunken Dai-11 Seikan Maru (which sank with all 90 crew aboard) is embedded in the rear of the monument. Ship hull fragments and commemorative plaques from the sunken vessels are displayed nearby, along with a stone marker documenting 80 years of ferry service history.