In 1965 – 1967 it also made the oil drilling platform '' Sedco 135-F '' for exploration by Shell Canada in Hecate Strait . At the time of its construction '' Sedco 135-F '' was the largest semi-submersible platform in the world and was the first platform constructed in British Columbia . The $ 10 million rig rose 50 metres above the water in the docks at VMD ( before submersion ) . After the 1967 launch and 3 years of exploration off the BC coast it was towed and worked at oil fields in New Zealand , the North Sea , and the Gulf of Mexico . The '' Sedco 135-F '' is often mentioned as the rig that suffered the blowout resulting in the Ixtoc I oil spill . At that time hower , the '' Sedco 135-F '' was working in Brazil . It was the original '' Sedco 135 '' , the first of the series built at Ingalls Shipbuilding in 1965 , that suffered the blowout . The '' Sedco 135-F '' was one of the last seagoing vessels built by VMD
Ixtoc I oil spill
Ixtoc I oil spill
Victoria Machinery Depot