🔍 Key Concepts

• Chain of command on a MODU (Mobile Offshore Drilling Unit) • Who has overall authority for safety and operations offshore • Differences in responsibility between operations, ballast control, and safety supervision positions

💭 Think About

• Which position is normally designated as having ultimate command of the MODU, similar to a ship’s master? • In an emergency, who is responsible for making final decisions that affect the entire unit, not just one department? • Which role is typically recognized in regulations and the Safety Management System as having overall responsibility for personnel and the unit?

✅ Before You Answer

• Identify which job title is usually given full overall authority in the MODU’s emergency organization chart. • Distinguish between roles that advise or manage specific systems (like ballast or barge operations) versus the role that commands the whole installation. • Think about who would be legally accountable for the decision to abandon the MODU under company procedures and regulations.