This excerpt taken from the VTG 8-K filed Sep 5, 2007.
Baker Marine Pacific Class 375 ultra-premium jackup rig overview
The Baker Marine Pacific Class 375 ultra-premium jackup rig is a proprietary design developed and owned by Baker Marine Pte Ltd, a wholly owned subsidiary of PPL Shipyard. It is designed as a non-harsh environment rig with a triangular platform, three long legs and a drilling platform on top. The rig is towed to a specific location and the legs are jacked down until they reach the ocean floor. At that time, the platform and drilling rig are moved up the legs and out of the water. After drilling a well, the jackup is returned to its moving position and towed by tugboat to the next location. Baker Marine Pacific Class 375 ultra-premium jackup rigs have a drilling depth of approximately 30,000 feet and may operate in up to 375 feet of water.