🔍 Key Concepts

• A hopper barge has a central cargo hopper with empty (or ballast) spaces between the hopper and the outer shell plating. • A wing tank is a longitudinal tank located along the sides of the vessel, outboard of the main cargo space. • In the cross‑section view, the wing tank will be a side space, not the bottom and not inside the hopper.

💭 Think About

• Focus on the cross‑section at the bottom of the illustration: which label points to the side space between the hopper and the hull, rather than to the hopper itself or the bottom plating? • Compare the shapes: which labeled area could realistically hold liquid ballast along the length of the barge, running up the side shell? • Eliminate any labels that clearly indicate the central hopper, the bottom tank, or the deck, leaving only the side tank along the hull.

✅ Before You Answer

• Verify which label is on the side space outboard of the hopper, not underneath it. • Confirm that the space you pick is enclosed and could serve as a tank (not just structure or open hopper). • Check that the chosen label matches what would extend longitudinally along the barge’s side in both the profile and the cross‑section views.