Drag and oil well: what they have in common

1. Step 1. Drag — is used in — Bulbous bow. It reduces wave resistance.
2. Step 2. Bulbous bow — is part of — Tanker. A bulb.
3. Step 3. Tanker — uses — Crude oil. It carries oil.
4. Step 4. Crude oil — uses — Oil well. Oil is extracted from wells.

Open Evothings