A multi-class offshore fleet — engineered for construction, dive and intervention.

From mobile dive support systems to integrated offshore construction barges and rapid response intervention vessels, HTSL Marine manages a fleet built for the realities of offshore execution — installation, commissioning, decommissioning and emergency response.

Field Operations

Construction and installation barge in position.

Construction & Installation Barge in Position

HTSL construction barge alongside platform

Barge Alongside Platform · Heavy-Lift Operations

Dive Support

Mobile Integrated Dive Support Systems.

Containerised and vessel-mounted dive spreads — saturation systems, retrievable baskets, surface-supplied air diving — deployable from our own tonnage or third-party vessels.

Mobile Integrated Dive Support System

Offshore Maintenance Vessel · Diving Capability

Mobile Integrated Dive Support System

Marine Construction Vessel · OCEAN CONSTRUCT

Rapid Response Intervention Vessel · HELENA

Integrated Offshore Construction Barge with Dive System & Platform Vessels

Dive Operations

Installation programme for dive system and retrievable basket.

Installation Programme for Dive System

Integrated Offshore Construction Barge

Installation of Dive & Retrievable Basket

Construction & DSV Fleet

Integrated offshore construction vessel · commissioning & decommissioning of offshore facilities and emergency intervention projects.

ICL CHALLENGER · Construction Vessel

OSL DISCOVERY · Offshore Construction Vessel

Integrated Offshore Support & Construction Vessel

Integrated Construction Vessel

Dive Support Vessel

Integrated Dive Support Vessel · with SAT System

Supply & Tug Fleet

Offshore Supply & Tug Boats.

Platform supply, anchor handling and harbour towage — supporting field logistics, rig moves and barge positioning across the Niger Delta and beyond.

CORALFISH · Anchor Handling Tug

River Tug · Inshore Operations

KING LOUIS · Offshore Tug

Offshore Supply Vessel

CORALFISH · Alongside Quay

PACIFIC STAR · Platform Supply Vessel

Dredger / Workboat

Cargo Barge · Yard

Marine Services

Beyond charter — full vessel management and integrated operations.

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Vessel CharteringTerm and spot charters for construction, supply, tug and dive vessels.
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Crew & Technical ManagementFull ISM/ISPS-compliant crewing, technical and safety management.
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Saturation & Air DivingSaturation systems, retrievable baskets and surface-supplied air diving.
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Heavy Lift & InstallationSubsea structure, jacket and platform installation operations.
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DecommissioningPlug & abandonment, structure removal and offshore facility decommissioning.
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Emergency ResponseRapid mobilisation for offshore incidents and well-control support.