Restricted Access Modular Drilling Rig

Designed with the Caspian Sea in mind, this sketch does not show the rig's ability to separate into two floatable independent units for transiting to the site.  There are two water routes by which a vessel may enter the Caspian Sea.  Within the water routes are narrow bridges, locks and shallows.  The minimum window is 54 feet wide, 49 feet high (above water) and 10 feet deep (underwater)