Offshore drilling platform and hammer: what they have in common

1. Step 1. Offshore drilling platform — has part — Drilling rig. A drilling rig.
2. Step 2. Drilling rig — has part — Diesel engine. The drive.
3. Step 3. Diesel engine — has part — Cylinder. Cylinders.
4. Step 4. Cylinder — is part of — Steam hammer. A steam cylinder.
5. Step 5. Steam hammer — evolved from — Hammer. A steam hammer is a hammer lifted by steam, used to forge huge parts.

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