🔍 Key Concepts

• Centerline crane arrangement and how far the crane can outreach on each side • Differences in weight and cost between centerline cranes and paired/single-wing cranes • How hatch layout affects whether one crane can serve multiple hatches

💭 Think About

• Visualize a ship from above with a crane on the centerline. How far can that crane reach to port and starboard, and to which hatches? • Think about why a designer might place cranes on the centerline instead of on the ship’s side. What advantages in structure, stability, or cost might this bring? • Consider whether a single centerline crane can practically and safely work cargo in two different hatch openings without being moved.

✅ Before You Answer

• For each option, ask: Is this physically possible given crane outreach and ship’s beam (width)? • Consider common cargo ship crane arrangements: are centerline cranes usually chosen for flexibility, economy, or both? • Check whether serving two adjacent hatches from one crane is a known feature of centerline-mounted cranes.