skos:altLabel | - pipeline
- trench
- Concrete mattresses
- Frond mattresses
- J-lay
- Pipeline inspection
- Submarine Pipe
- Submarine Pipe-
- Submarine Pipelines
- Submarine pipeline#The S-lay system
- Submarine_pipeline#Environmental_and_Legal_issues
- pipe laying
- pipeline work
- submarine ducts/pipes
- submarine gas pipelines
- submarine pipeline
- submarine pipes
- subsea
- subsea pipelines
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