CCGS John Cabot (1965)

CCGS John Cabot (id: 320951;IMO number: 6514974; MMSI number: 247253000) was a Canadian Coast Guard heavy icebreaker and cable ship in service starting 1965. It passed out of CCG service and entered private service in 1994, as the cable ship CS John Cabot. In 1997, it was again renamed, becoming CS Certamen. The ship was scrapped in 2014, under the name Certa. It was the world's first icebreaking cable repair ship built. In 1985, it recovered the black boxes from Air India Flight 182. As of 2023, the John Cabot participated in the deepest submarine rescue ever performed, in 1973, retrieving Pisces III from the seafloor at 480 m (1,570 ft) and rescuing the crew of Roger Mallinson and Roger Chapman.