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Navigation
- Dredging — Determine top of rock, rock diggability & contaminated sediments
- Hydrography — Measure multibeam & single-beam bathymetry
- Sedimentation — Determine recent-sediment thickness & sedimentation rates
- Obstructions — Locate & describe boulders, utilities, abutments & debris
- Materials separation — Estimate extent & thickness of industrial sediments
- Diggability — Estimate rippability from seismic imaging & test digs
- Rock blasting — Monitor vibrations & review procedures
- Acceptance surveys — Sonar & electromagnetic surveys postconstruction
- Safety surveys — Sonar & electromagnetic surveys before & during drilling & digging
- Accident investigations — Determine underwater objects & positions
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