🔍 Key Concepts

• Unit-specific limitations published in the vessel’s (or rig’s) characteristics sheet or stability booklet • Difference between water depth capability and drilling depth capability • How configuration (e.g., anchored vs. dynamically positioned) can limit maximum operating water depth

💭 Think About

• Where would you normally find the maximum operating water depth for a specific rig like DEEP DRILLER—general rules, or that rig’s technical data? • Is the question asking about how deep it can drill below the seabed, or how deep the water can be where it is operating? • Think about typical water-depth brackets for different types of mobile offshore drilling units (jack-ups vs. semi-submersibles vs. drillships). Which range best fits a jack-up style rig configuration?

✅ Before You Answer

• Confirm you are thinking about water depth, not total drilling depth below the mudline • Match the choices to realistic jack-up water depth ranges (hundreds of feet, not thousands) • Ask yourself if the question is tied to a specific table, figure, or spec sheet for DEEP DRILLER that you’ve seen in your study materials and recall that number range