What factors determine the lifting capacity required for a cylindrical bag?
The calculation should consider submerged weight, lifting height, underwater clearance, water depth, vessel center of gravity, hull geometry, number of bags, seabed resistance, environmental conditions, and required reserve buoyancy.
Can cylindrical lifting bags be installed beneath a partially flooded vessel?
Yes, they can be used in suitable partially flooded vessel recovery operations. However, the changing underwater weight during dewatering must be considered, and inflation should follow an established recovery procedure.
Are special restraints required during underwater inflation?
Appropriate restraint and positioning arrangements are normally required to prevent unwanted lateral movement or rolling of the bag during inflation, depending on hull geometry and seabed conditions.
How can the service life of the lifting bags be maintained?
Service life depends on operating pressure, deployment frequency, environmental exposure, and maintenance. Bags should be inspected before and after use, cleaned, dried completely, and stored properly.
Can the product be supplied with different valves and connection arrangements?
Yes. Inflation valves, connection points, reinforced end sections, lifting fittings, and related accessories can be configured according to project requirements.
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