Vessels are mainly built to tow and handle anchors for oil rigs, tow them to location, and use them to secure the rigs in place. They are equipped with winches for towing and anchor handling, an open stern to allow for the decking of anchors, and increased power to enhance bollard pull, crucial feature of this type of Vessel.

Vessels are mainly built to handle anchors for oil rigs, tow them to location, and use them to secure the rigs in place. They are equipped with winches for towing and anchor handling, an open stern to allow for the decking of anchors, and increased power to enhance bollard pull. AHTS vessels are also versatile workboats in the oil and gas offshore field, performing tasks like towing operations, rig moves, and general supply duties, including transporting dry and liquid cargo such as cement, mud, fresh water, and fuel oil for offshore installations. Additionally, they act as rescue vessels for other ships during emergencies.

Are designed to transport all the necessary supplies and act as the major supply link from the on-shore land base to the offshore platform and viceversa. Cargoes are either moved on the ship’s main deck or inside its tanks below deck. These cargoes typically include fuel, water, and chemicals used during construction, as well as chemicals and waste products that have been used on the platform and need to be returned to shore for recycling or disposal.

A tugboat is a powerful highly maneuverable marine vessel designed to tow or maneuver other vessels by pushing, pulling them. Tugboats assist larger ships during operations such as mooring or berthing, helping them navigate narrow water channels and ports. They can operate through direct contact or by using tow lines. Tugboats are essential for ensuring the safe and efficient movement of larger vessels and other floating equipment without power in various maritime environments.

These barges feature a large, unobstructed deck that accommodates a wide range of cargo, including heavy equipment, containers, and bulk materials, making them ideal for offshore construction, dredging, and transportation projects. Flat-top barges are also known as pontoons, flat-deck barges, and deck cargo barges. More sophisticated flat tops have pumping rooms and ballasting systems which allow the trim of the barge and draft to be regulated, for efficient loading and offloading.

specialized research ship equipped with hydrographic and geophysical tools to map the seabed, assess underwater topography, and collect data for various projects like offshore construction and resource extraction. Key features often include sonar, echo sounders, a moonpool, cranes, and A-frames for deploying sensors and equipment like ROVs and corers. These vessels are designed to provide a stable, capable platform for scientific and engineering work in the marine environment, with their size, hull design, and equipment varying based on the specific survey tasks they perform

A diving support vessel is a ship that is used as a floating base for professional diving projects. Basic requirements are the ability to keep station accurately and reliably throughout a diving operation, often in close proximity to drilling or production platforms, for positioning to degrade slowly enough in deteriorating conditions to recover divers without excessive risk, and to carry the necessary support equipment for the mode of diving to be used within 50m or beyond 50m working depth.

are specialized ships with cranes designed for lifting heavy loads, often used for offshore construction. They can be conventional monohulls, barges, catamarans, or semi-submersible vessels, and some are equipped with rotating cranes, fixed sheerlegs, or large gantry cranes.

Construction Support Vessels are large and technologically advanced vessels used for deep-sea and subsea constructions. These vessels typically feature lifting, positioning, and pile-driving capabilities, as well as dynamic positioning systems, cranes, and Remotely Operated Vehicles (ROVs). These capabilities enable them to operate effectively even in the harshest weather conditions.

In Offshore we call Surfers the speedboats used to transport personnel and light parcels, essential for the functioning of an offshore site. Surfers, being agile and light are designed to struck their bow into boat landing platforms allowing fast and safe personnel disembarkation. Crew Transfer Vessels and FSIV complete same tasks but with augmented capacities in deck, number of seats, DP or non-DP.

Known for their flexibility, reliability, and efficiency, multicats are essential for various marine operations, from construction to maintenance. Shallow Draft, Spacious Deck Area, High Maneuverability, Heavy-Duty Machinery, Lifting Capacity and Crew Accommodation make multicats vessels stand out as one of the most sought-after types of ships when it comes to versatile workhorses in the offshore industry.

a multipurpose, shallow-draft workboat, compact but powerful, with capabilities that include towing, pushing, anchor handling, dredging support, and offshore logistics, despite their compact size, they boast impressive bollard pull, often ranging from 20 to 80 tonnes, making them suitable for heavy towing tasks, equipped with cranes, winches, towing pins, and spacious open decks.

Jackup platforms are almost exclusively used as exploratory oil and gas drilling platforms and as offshore and wind farm service platforms. Jackup rigs can either be triangular in shape with three legs or square in shape with four legs. Jackup platforms have been the most popular and numerous of various mobile types in existence.

also known as floating hotels or floatels, are used to accommodate personnel during the setup or maintenance of offshore structures, wind farms, civil construction projects. They moor or keep position in Dynamic Positioning in direct proximity to the construction site, reducing transit time for workers. These vessels often have landing platforms for crew transfer, a helicopter deck for personnel exchange, and provide communication and conference rooms, storage space, and workshops for repair work.

a powerful dredging vessel designed to excavate and remove compact soils, sand, clay, or rock from the seabed, rivers, ports, or canals. Equipped with a rotating cutter head at the suction inlet, it loosens and fragments material, which is then sucked up by a dredge pump and transported through pipelines—either floating or submerged—to a designated disposal or reclamation site.

a type of self-propelled dredging vessel commonly used in port maintenance, land reclamation, and offshore projects. It removes sediments like sand, silt, gravel, or clay from the seabed and stores them in an onboard hopper for transport and later discharge.

a type of self-discharging vessel used mainly for dredging and marine construction projects. Instead of using pumps or conveyor systems to unload, the vessel’s hull itself splits open along the centerline, allowing the cargo (usually dredged material like sand, silt, or gravel) to fall directly into the sea or onto a reclamation site.

Workboats are versatile vessels designed to perform a wide range of support and service functions in maritime, offshore, and inland water operations. Built for durability and utility rather than speed or comfort, they are typically equipped with strong hulls, heavy-duty engines, and specialized gear to handle demanding tasks.

Semi-submersible heavy transport vessels are highly specialized ships designed to carry extremely large, heavy, or awkwardly shaped cargoes that cannot be transported by conventional means. They are built with a ballast system that allows the vessel to partially submerge, enabling floating cargo (such as oil rigs, drilling units, or offshore platforms) to be floated over the deck. Once positioned, the vessel deballasts and resurfaces, lifting the cargo clear of the water for secure transport of offshore oil and gas rigs, FPSOs, and large modules, movement of naval vessels, large industrial structures, and power plant components, emergency salvage and relocation of damaged ships.

Heavy transport barges are flat-decked, non-self-propelled vessels designed for the carriage of oversized and ultra-heavy loads. They are typically towed or pushed by tugboats and are widely used in both offshore and inland water projects to transport of construction modules, offshore jackets, topsides, and heavy machinery. Platform installation support and load-outs from fabrication yards. Coastal and river transport of industrial cargoes not suited for roads or rail. semi-submersible heavy transport vessels and barges are critical assets in offshore energy, infrastructure development, and heavy engineering logistics, where conventional shipping cannot accommodate the size or weight of the cargo

Heavy lift crane vessels are specialized ships equipped with powerful cranes capable of lifting and installing extremely large and heavy structures at sea. They are self-propelled, often dynamically positioned, and designed for precision operations in offshore construction, decommissioning, and installation projects. Installation of offshore platforms, wind turbine foundations, topsides, and subsea modules. Decommissioning and removal of old oil and gas infrastructure. Salvage operations

Mobile offshore drilling units with a buoyant hull and extendable lattice legs that can be jacked down onto the seabed, elevating the hull above the water. Exploration and production drilling in shallow waters (typically up to ~400 ft). Flat-bottomed, non-self-propelled rigs used in sheltered waters such asswamps, lakes, rivers, and calm offshore zones. Floating platforms supported by submerged pontoons, partially ballasted for stability. They can be moored or dynamically positioned. Ship-shaped, self-propelled vessels equipped with a central derrick and advanced dynamic positioning systems. These four offshore drilling units cover the full spectrum of water depths and environments — from inland shallows with drilling barges, to shallow coastal areas with jack-ups, through deepwater operations with semi-submersibles, and into ultra-deep frontiers with drillships.

ERRV is the dedicated safety and rescue ship for offshore operations. It’s a type of offshore support ship designed to: Provide emergency rescue and evacuation for personnel. Offer medical assistance on board. Support firefighting and oil spill response. Act as a standby safety vessel near offshore platforms, rigs, or wind farms.

Multi-Purpose Support Vessel. These are versatile offshore vessels designed to handle a wide range of support tasks, such as Subsea operations (ROVs, diving support, cable laying) Anchor handling and towing of rigs or floating structures Salvage and rescue operations Supply and transport of cargo, equipment, and personnel Emergency response, sometimes including firefighting and oil spill support. an MPSV is a highly flexible offshore workhorse, capable of performing multiple roles on the same vessel.

Cable Layer vessels are specialized ships designed to lay underwater cables for power transmission or telecommunications.

Cable deployment: Carry and precisely lay submarine cables on the seabed. 

Cable storage: Equipped with large cable tanks or drums. 

Positioning systems: Dynamic positioning (DP) systems to maintain exact locations during operations.

Survey and monitoring: Some have equipment to survey the seabed and monitor cable placement.

Support operations: May also perform cable burial, repair, or maintenance.

Cable Layers are vessels built to install and maintain subsea power and communication cables efficiently and safely.

Pipe Layer vessels are specialized ships designed to install subsea pipelines for oil, gas, or other fluid transport.

Pipeline deployment: Lay pipes on the seabed with precision.

Pipe handling equipment: Equipped with stingers, tensioners, and reels to manage heavy pipelines.

Dynamic positioning (DP): Maintains vessel stability and accuracy during laying operations.

Welding and inspection: Some have onboard welding stations and inspection systems.

Support for offshore projects: Used in oil, gas, and sometimes renewable energy sectors (like offshore wind).

A Landing Craft is a flat-bottomed vessel designed to transport cargo, vehicles, or personnel from ship to shore, often in shallow waters or areas without port facilities.

Shallow draft: Can operate close to shore or on beaches.

Cargo and vehicle transport: Can carry heavy loads, including containers, trucks, or construction equipment.

Roll-on/roll-off capability: Many have ramps for vehicles to drive on and off directly.

Support for offshore or amphibious operations: Used in logistics, construction, and military applications.

Versatility: Can operate in ports, rivers, or undeveloped coastlines.

A Landing Craft is a shallow-draft vessel for transporting cargo, vehicles, or personnel from ship to shore.