🔍 Key Concepts

• Starting air systems requirements for main propulsion engines • Difference between starting air, control air, and service air • Redundancy and safety principles in SOLAS/engine room design

💭 Think About

• Which option would still let you start the main engine if one air component failed or lost pressure? • Look at which choices describe redundancy of the air supply itself versus just valves, drains, or different types of air use. • On ships with air-start engines, what is normally duplicated for safety: the containers, the drains, or the type of air (control vs. starting)?

✅ Before You Answer

• Identify which answers actually provide true redundancy for starting the main engine. • Distinguish between air used to control systems and air used to turn the engine over (crank it). • Ask: If one element in this setup fails, which choice would most likely still allow a safe engine start?