Container doors with locking bars and dewar flask: what they have in common

1. Step 1. Container doors with locking bars — is part of — Shipping container. End doors.
2. Step 2. Shipping container — is used in — Container ship. Carries standard containers.
3. Step 3. Container ship — has part — Bulbous bow. A bulb.
4. Step 4. Bulbous bow — is part of — Tanker. A bulb.
5. Step 5. Tanker — includes — LNG carrier. A tanker.
6. Step 6. LNG carrier — has part — Dewar flask. Insulated tanks.

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