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The Toya Maru (Ja:洞爺丸 とうやまる) was a Japanese freightliner constructed by the Japanese National Railways which sank during a typhoon in the Tsugaru Strait between the Japanese islands of Hokkaidō and Honshū on September 26, 1954. It is said that 1139 people aboard were killed in the accident, however the exact number of fatalities remains unknown.

Contents 1 Construction 2 Accident 3 Aftermath 4 See also 5 References 6 External links

The Toya Maru was launched on November 21, 1947. It was 118.7 meters (approximately 130 yards) long and 15.85 meters (60 ft) at its beam and it had a Gross Register Tonnage of 3,898 tons. It could accommodate 1,128 passengers and was operated by 120 crew. She covered the distance from Aomori to Hakodate in 4 hours and 30 minutes.

She was so lavishly equipped that it was hard to believe she had been constructed during the difficult time Japan faced following the end of World War II. As early as 1950, she was fitted with Radar equipment, becoming one of the first Japanese sea liners to do so. She was used by the Emperor the month before her demise. She was also famous as the flag ship of the Tsugaru Strait.

The following refers to what happened on September 26, 1954 to the Toya Maru.

Typhoon No.15, Mary, which had blown through Honshū, was in the Sea of Japan at 12:00 hours on September 26, 1954, proceeding Northeast at a speed of more than 100 kilometers an hour. It was predicted to reach the Tsugaru Strait at around 17:00 hours.

At 11:00 hours, the Toya Maru arrived at Hakodate after its first journey that day from Aomori. She was originally scheduled to return to Aomori at 14:40 hours to arrive at Aomori just before Typhoon Mary. However, due to the expected storm, another ferry the Dai 11 Seikan Maru, a somewhat poorer quality vessel, could not depart on its scheduled journey to Hakodate. Therefore, passengers and vehicles were transferred to the Toya Maru delaying departure.

The captain of the Toya Maru decided to cancel it's journey at 1510 hours.

At 17:00 hours, following heavy rainfall in Hakodate, the weather cleared up and the outlook improved. The captain presuming that the Typhoon had now passed as predicted decided to proceed with the journey for Aomori. However, by this time the Typhoon had slowed and was predicted to stay over the straight for an entire day.

At 18:39 the Toya Maru departed from Hakodate with approximately 1,300 souls aboard. Shortly thereafter the wind picked up coming from a SSE direction.

At 19:01, the Toya Maru lowered its anchor at the very side of Hakodate Port to wait for the weather to clear up again. However, due to the high winds, the anchor did not hold and the Toya Maru was cast adrift. Water entered to the engine room due to poor design of the vehicle decks, causing its steam engine to stop and the Toya Maru to become uncontrollable. The captain decided to beach the sea liner onto Nanae Beach, in the outskirts of Hakodate City.

At 22:26 hours, the Toya Maru beached and an SOS call was made. However the waves were so strong that the sea liner could no longer remain upright and at around 22:43 hours, the Toya Maru capsized and sank at sea several hundred meters off the shore of Hakodate. Of the 1,309 on board only 150 people survived, while 1,159 (1,041 passengers, 73 crew and 41 others) died.

Four other ferries sank in the same typhoon with a total loss of life of 1,430. ^[1]

The disaster was one of the major factors behind the construction of the Seikan Tunnel between Hokkaidō and Honshu. However, ferry traffic still continues to operate in the strait.

• 1954 Pacific typhoon season

1. ^ Matsuo, S. (1986). "An overview of the Seikan Tunnel Project Under the Ocean". Tunnelling and Underground Space Technology 1 (3/4): 323-331. 

• Additional information on the Toya Maru, including pictures (Japanese)