Last Updated：2025/11/22
Before mapping the coastal shelf, the research vessel's technicians calibrated the fathometers to guarantee precise depth measurements.
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Before mapping the coastal shelf, the research vessel's technicians calibrated the fathometers to guarantee precise depth measurements.
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沿岸棚を測量する前に、研究船の技術者は正確な水深を確保するために測深儀を校正した。
