About
Dock Blocks, a dive and marine equipment supplier, operates out of North Charleston, SC. Services include equipment sales and service and support. Contact them directly to discuss scope, access and mobilisation.
Hours
| Monday | 8AM-8PM |
|---|---|
| Tuesday | 8AM-8PM |
| Wednesday | 8AM-8PM |
| Thursday | 8AM-8PM |
| Friday | 8AM-8PM |
| Saturday | 8AM-8PM |
| Sunday | 8AM-8PM |
Frequently Asked Questions — North Charleston, SC
Do you service dive operations in North Charleston, SC, and why is mobilisation such a big line item?
We support commercial dive operations across the region, but for a project near North Charleston, SC, the mobilisation charge is always separate from the day rate. Mobilisation covers moving the full spread (compressor, diver, standby diver, boat, and support equipment) and often explains the biggest difference between bids. Compare line items carefully; a low day rate with a remote mobilisation can cost more overall.
How far ahead should we schedule underwater work, and who gets the permits for a North Charleston-SC project?
Commercial diving is a regulated activity under OSHA 29 CFR 1910 Subpart T, and the dive supervisor typically holds an ADCI certification. Permits can involve state or federal environmental agencies, and lead time depends on the water body, season, and whether you need an environmental window. We recommend coordinating with the dive contractor early; the operator is responsible for access and any discharge permits, but the dive team handles the operational safety plan.
How does pricing work for a commercial diving inspection package?
Quotes are based on a crew/spread day rate plus mobilisation. Inspection work is often priced per structure or per substructure unit (for example, per bridge pier), while marine construction is unit-priced by the linear foot or per pile. Always ask for the mobilisation and demobilisation line items separately; a large gap between two bids usually comes down to that, not the daily rate.
Should we do the inspection in the water at North Charleston or haul the vessel out?
An in-water hull exam (UWILD) per 46 CFR 71.50-3 is faster and avoids dry-docking, but water clarity, sea state, and hull fouling can limit how much you actually see. Hauling out gives the surveyor full access but costs more and uses a slip. If the vessel has intake or discharge openings, remember that differential pressure must be isolated before any diver approaches—this is not routine work without proper controls.
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