Signal International announced the delivery of the Frontier Driller semisubmersible rig which underwent a major upgrade and modernization at its East Bank yard in Pascagoula, Miss. The scope of work encompassed starting with a veteran semisubmersible rig; renovating and outfitting it with updated drilling and marine equipment to render the rig capable of drilling deeper wells. Major tasks such as construction of new derrick (single lift), new BOP handling structure, addition of winch decks (four corners)…