Tools or devices that enable the installation and/or retrieval of a subsea casing hanger.

Subsea equipment class that contains classes of artefacts which are infrastructure equipment.

System that controls and monitors the deployment, the operation and the retrieval of subsea production equipment and is used during installation, workover, and intervention of a single subsea tree from a moored or dynamically positioned deepwater mobile offshore drilling unit (MODU) or multi-service vessel (MSV).

Subsea or subaquatic equipment class that contains classes of artefacts which are instrumentation equipment.

Device or remotely operated tool deployed by an intervention system to mate or interface with an intervention fixture.

An artefact for connecting a well or a manifold to a subsea flowline.

A frame that is a structural framework to provide strength and protection for a subsea manifold.

Subsea or subaquatic equipment class that contains classes of artefacts which are mechanical equipment.

A device intended to prevent excessive jacket penetration into the soil.

A pipeline crossing which is subsea and located above or below a specific object or geographic feature.

A topside unit providing electrical power and communications to the subsea control and monitoring equipment

The protection structure that covers the subsea equipment (template, manifold, trees, etc. ) to protect the equipment from third party damages as e.g. dropped objects, anchors or trawl equipment.

Dedicated, unmanned, subsea or subaquatic tools used for installation and inspection, maintenance, and repair (IMR) tasks that require a handling capacity beyond that of free-swimming ROV systems.

A submarine or subaquatic ROV which is a nearly neutral buoyancy submarine that is manipulated from a surface platform by an umbilical.

Subsea infrastructure class that contains classes of artefacts which are structures.

Suction piles are a form of fixed platform anchor in the form of an open bottomed tube embedded in the sediment and sealed at the top while in use so that lifting forces generate a pressure differential which holds the caisson down

A device that is made as a tool to be used for a subsea or subaquatic purpose.

An umbilical for subsea or subaquatic use between a surface platform and subaquatic equipment or installation.

Is an artefact intended to collect a heavy phase by making use of gravity.

The external fabric of a building that is visible above ground.

Equipment used to direct surface water flow.

A physical object that is protecting against a large but momentary increase in the voltage of an electric circuit.

A check valve that is a check valve where the closure member is a disc which swings freely on a hinge and which opens automatically when flow is established and closes automatically when flow ceases or is reversed.

A switchgear and controlgear bearing a set of switches for connecting and disconnecting the various circuits of an electrical system, as of a telegraph, telephone, etc.

A physical object that is a general term covering switching devices and their combination with associated control, measuring, protective and regulating equipment, also assemblies of such devices and equipment with associated interconnections, accessories, enclosures and supporting structures.