The Kyowa rock bags protect wharves and ship berths from scouring of the revetment, toe protection.
Subsea marine pipelines and subsea marine cables,
Seashores and beaches, shorelines and tidal areas,
Piers, jetties, piers and bridge pylons, piles, groynes, marine and coastal structures,
Levelling of uneven seabed, riverbed or lakebed