Commercial Diving & Subsea Engineering
Engineered for high currents, zero visibility, deep scour depths, and high-consequence river and offshore environments throughout Bangladesh.
Commercial Diving & Underwater Construction
With over 30 years of field-proven experience in Bangladesh’s major river systems and coastal waters, OSDS delivers comprehensive inland, offshore, coastal, and port commercial diving solutions. We mobilize surface-supplied diving systems and Navy-qualified diving crews for complex civil engineering works, riverbank erosion protection, and subsea utility infrastructure.
Industrial Applications & Core Tasks
Mega-infrastructure bridges & viaducts
Specialized underwater engineering and certified diving execution for mega-infrastructure bridges & viaducts.
Riverbank erosion risk mitigation (FRERMIP/BWDB)
Specialized underwater engineering and certified diving execution for riverbank erosion risk mitigation (frermip/bwdb).
Cross-river gas and oil pipelines
Specialized underwater engineering and certified diving execution for cross-river gas and oil pipelines.
Submarine telecommunications & power cable landfalls
Specialized underwater engineering and certified diving execution for submarine telecommunications & power cable landfalls.
Port jetties, quaysides, and navigation locks
Specialized underwater engineering and certified diving execution for port jetties, quaysides, and navigation locks.
Key Verified Capabilities:
- •Underwater feasibility studies for marine, river, and coastal construction projects
- •ADCP (Acoustic Doppler Current Profiler) deployment, positioning, monitoring, and recovery during dredging operations
- •Underwater river training works: inspection of dams, locks, groynes, revetments, embankments, and river protection structures
- •Underwater placement and setting of concrete blocks, CC mattresses, and aggregate foundations
- •Geotextile panel inspection, lapping/overlapping verification, and geotextile sandbag placement
- •Underwater foundation preparation for marine and civil engineering projects
- •Installation of geotextile fabrics on riverbeds
- •Underwater falling apron installation using geobags and erosion monitoring
- •Scour depth measurement, penetration inspection, and underwater evidence collection
- •Diving support for salvage operations, including underwater rigging and heavy lifting
- •Bridge inspection and structural condition assessment (Padma, Bhairab, Meghna & Gomti Bridges)
- •Diving support for submarine cable laying operations and high-pressure subsea water jetting for cable burial
- •Underwater cofferdam installation, sheet piling, and pile repair works
- •Underwater cleaning, excavation, dredging, and digging operations with diver-operated dredging systems
- •Pumping, jetting, and air-lifting of underwater materials
Equipment & Tooling Deployed:
- ✓Surface Supplied Diving (SSD) Air Control Console
- ✓Kirby Morgan Helmets with integrated comms & CCTV
- ✓100m Umbilicals & Pneumofathometer depth gauges
- ✓Hydraulic underwater drills, impact wrenches, and grinders
- ✓Heavy-duty salvage lifting bags (multi-ton capacity)
- ✓Subsea water jetting and dredging suction pipes
Marine Inspection & Maintenance
OSDS provides precision subsea inspection, cleaning, and preventative maintenance for commercial shipping vessels, barge-mounted power stations, industrial water intakes, and maritime structures across the Bay of Bengal, Chittagong, Cox’s Bazar, and inland waterways.
Industrial Applications & Core Tasks
Haripur 360 MW & Matarbari Power Station intake basins
Specialized underwater engineering and certified diving execution for haripur 360 mw & matarbari power station intake basins.
Barge-mounted power plants (Covanta, OGDEN, Globeleq)
Specialized underwater engineering and certified diving execution for barge-mounted power plants (covanta, ogden, globeleq).
Container ships, cargo vessels, and tug fleets (Svitzer)
Specialized underwater engineering and certified diving execution for container ships, cargo vessels, and tug fleets (svitzer).
Port authority berths, steel sheet piles, and jetties
Specialized underwater engineering and certified diving execution for port authority berths, steel sheet piles, and jetties.
Key Verified Capabilities:
- •Underwater hull inspection, cleaning, and biofouling removal
- •Sea chest inspection, blanking, cleaning, and underwater repair
- •Water intake basin inspection, maintenance, and silt removal for power plants and industrial facilities
- •Intake structure inspection, trash rack cleaning, and repair
- •Underwater cathodic protection system inspection, potential measurement, and maintenance
- •Installation and replacement of zinc sacrificial anodes on sheet piles, marine structures, jetties, and port facilities
- •Underwater pile and steel structure cleaning and marine growth clearing
- •Search and recovery of lost subsea equipment and marine anchors
- •Underwater cutting and welding (certified underwater welders)
- •Underwater photography and high-definition CCTV videography for engineering documentation and project monitoring
- •Ultrasonic Thickness Measurement (UTM) and nondestructive structural testing
Equipment & Tooling Deployed:
- ✓Underwater CCTV Camera System with 4-Diver Monitoring Console
- ✓Ultrasonic Thickness Gauges (UTM) & Metal Detectors
- ✓High-pressure underwater water jetting pumps
- ✓Underwater welding torches & cutting rigs
- ✓Specialized sea chest blanking plates & plugs
Environmental & Scientific Diving
Leveraging decades of fieldwork at Saint Martin’s Island and the Bay of Bengal, OSDS partners with premier scientific bodies including CEGIS, UNDP, the British Council, Bangladesh Oceanographic Research Institute (BORI), University of Dhaka, and Chittagong University.
Industrial Applications & Core Tasks
Saint Martin’s Island Coral Community Conservation (UNDP/GEF/WCRC)
Specialized underwater engineering and certified diving execution for saint martin’s island coral community conservation (undp/gef/wcrc).
Bay of Bengal LNG Site Investigation (CEGIS)
Specialized underwater engineering and certified diving execution for bay of bengal lng site investigation (cegis).
DNA Barcoding and Metabarcoding of Marine Life (BARC)
Specialized underwater engineering and certified diving execution for dna barcoding and metabarcoding of marine life (barc).
Academic research programs with national universities
Specialized underwater engineering and certified diving execution for academic research programs with national universities.
Key Verified Capabilities:
- •Coral reef scientific and environmental baseline surveys
- •Artificial reef design, construction, and underwater installation
- •Coral restoration, fragment propagation, and nursery rehabilitation projects
- •Marine biodiversity monitoring (fish, zooplankton, and benthic communities)
- •Environmental Impact Assessment (EIA) diving support for offshore LNG terminals and deepwater ports
- •Underwater ecological monitoring and high-definition scientific documentation
- •Marine habitat assessment, sanctuary boundary marking, and conservation support
- •Seabed sediment core sampling and hydrographic evidence collection
Equipment & Tooling Deployed:
- ✓Scientific quadrate grids, transect lines, and underwater slates
- ✓High-resolution underwater digital macro cameras
- ✓GPS surface positioning & ADCP acoustic profilers
- ✓Underwater sediment samplers and biological specimen containers
- ✓Artificial reef frame deployment rigging
Diving Training & Recreational Services
Operating both institutional training in Dhaka and an offshore recreational dive center on Saint Martin’s Island, OSDS delivers comprehensive diver education led by Bangladesh Navy-trained instructors, CMAS 3-star conservation divers, and NDL Global Course Directors.
Industrial Applications & Core Tasks
Commercial diving career certification
Specialized underwater engineering and certified diving execution for commercial diving career certification.
University marine science field courses
Specialized underwater engineering and certified diving execution for university marine science field courses.
Eco-tourism and recreational scuba diving in Saint Martin’s Island
Specialized underwater engineering and certified diving execution for eco-tourism and recreational scuba diving in saint martin’s island.
Industrial and emergency response team training
Specialized underwater engineering and certified diving execution for industrial and emergency response team training.
Key Verified Capabilities:
- •Professional commercial diver training (Surface Supplied Diving, umbilical management, subsea tools)
- •Scientific diving training for researchers, marine biologists, and environmental inspectors
- •Recreational scuba diving courses (Beginner Open Water, Advanced Diver)
- •Rescue diver training and dive emergency management
- •Dive safety management, O2 provider certification, and emergency response training
- •Operation of our dedicated recreational scuba diving center at Saint Martin’s Island
- •Guided underwater reef tours and scuba equipment rental
Equipment & Tooling Deployed:
- ✓Certified SCUBA cylinders with current hydrostatic test certifications
- ✓Balanced diaphragm breathing regulators with submersible pressure gauges
- ✓Modern Buoyancy Control Devices (BCDs) and integrated weight belts
- ✓Portable Emergency Oxygen Kits & first aid stations
- ✓Training pool facilities & dedicated offshore dive boat
Need An Emergency Subsea Intervention?
Our dive crews and surface supply gear are permanently stationed in Dhaka and can deploy on-site within hours anywhere in Bangladesh.