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- Steps of underwater exploration
- Preparation before underwater fishing and hoisting
- Precautions for offshore wind power hoisting
- Charging basis for underwater salvage
- What is channel dredging?
- Matters to be done by underwater salvage personnel
- Basic principle of sunken ship salvage in underwater engineering
- Discussion on salvage method of sunken ship
- Environmental requirements for underwater cutting
- Precautions for underwater cutting construction
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