Disasters
"Piper Alpha", after the blast, had to be toppled in order to achieve a safe navigable water depth. The toppling operation was executed with explosives and pulling force
The rig "Tahara" grounded in monsoon season off Mumbai. With a slight list it was refloated
The collapsed rig "Al Mariyah" was towed away from a live well. When freed, its legs were cut and subsequently it was towed to Mina Zayed/Abu Dhabi.