Worldyards Offshore Segment Definitions for Offshore Vessels and Structures 22 June 2016

Segment Definitions for Offshore Vessels & Structures 1. Offshore Support Vessels I Sub-segment

Definition

Capacity Measure

1(1)

Anchor handling tug supply vessels (AHTSV)

Anchor Handling Tug Supply - combined offshore supply vessels and anchor-handling ships. Some vessels also have salvage capabilities such and fire fighting equipment

BHP

1(2)

Anchor handling tug vessels (AHTV)

Anchor Handling Tug - offshore anchor-handling ships. Some vessels also have salvage capabilities such and fire fighting equipment

BHP

1(3)

Platform supply vessels (PSV)

Platform Supply Vessels - vessels that serve permanently positioned oil rigs by delivering staff, food, equipment and waste removal.

Clear deck area

Emergency Response & Rescue vessels (ERRV)

Emergency Response and Rescue Vessel (ERRV) is an offshore support vessel with the primary function of being on permanent standby at offshore installations for the rescue and evacuation of offshore facilities. Other specific functions include; 1) provision of medical aid, providing on scene co-ordination for the installation's Emergency Response Plan, and 2) participating in the execution of the installation’s collision avoidance strategy e.g. to monitor the Safety Zone, and warn approaching vessels and the installation of the risk of collision. The ERRV also; 3) acts as a reserve radio station.

No. of persons rescue capacity

1(4)

2. Offshore Support Vessels II Capacity Measure No. of men (diving) system

Sub-segment

Definition

2(1)

Diving support vessels

Diving support vessels are vessels with floating bases for professional diving projects.

2(2)

ROV support vessels

Remotely Operated Vehicles are unoccupied, highly maneuverable underwater robots operated by a person aboard a surface vessel.

No. of ROV

2(3)

Subsea Operations Vessel

Subsea Operations vessels are specialist ships for the offshore industry with a built in Saturation Diving System and are capable of supporting on-board Remote Operated Vehicles (ROV’s)

Clear deck area

2(4)

Well servicing vessels

Vessels built for well intervention, servicing and workover of existing wells.

Deadweight

Worldyards Offshore Segment Definitions for Offshore Vessels and Structures 22 June 2016 3. Accommodation Units & Drilling Tenders Sub-segment

Definition

Capacity Measure

3(1)

Semisubmersible accommodation units

This is a semi-submersible platform/barge that carry personnel who work on offshore construction projects.

No. of persons

3(2)

Work accomodation barges (WAB)

These are normal hull barges or ship-shape vessels that have a large accommodation space for accommodating personnel who are working on offshore construction or repair projects. These barges may have cranes or may not have cranes.

No. of persons

3(3)

Jackup accommodation structures

These are jack-up type structures that have a large accommodation space for accommodating personnel who are working on offshore construction projects.

No. of persons

3(4)

Drilling Tenders

Drilling tender rig can come in either self-erecting (similar to a jackup), a mono-hull or a semi-submersible. Self-Erecting Tender Rigs (SETR's) have been used in South East Asia, West Africa and the Middle East for 30 years for drilling development wells from fixed platforms. Inherent in the SETR concept is that equipment required to support the drilling operation such as power, living quarters, etc, is located on the tender, while only equipment actually needed for drilling such as the derrick, topdrive, BOP, etc are installed on the platform. In the late 1990s, came the emergence of the deepwater tender drilling rig concept. The past decade has seen the introduction of barge-type tender or a semisubmersible-type tender. Operators will choose a semisubmersible-type tender as more appropriate for deepwater or harsher weather conditions.

Drilling Depth

4. FDPSO

4(1)

Sub-segment

Definition

Capacity Measure

FDPSO

Floating Drilling Production Storage Offloading (FDPSO) combine floating drilling production storage and offloading (FDPSO) systems. As with FPSOs and FSOs the ships can be based on newbuildings or conversions. The vessel’s complexity revolves around the combination of mooring, drilling, and riser tie-in systems into the same turret. The units are particularly useful in marginal fields that have numerous nearby drilling requirements. Some FDPSO units have detachable drilling units that can be removed partway through the units lifespan. These are also called as MPF(Multi Purpose Floaters).

Water depth

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Worldyards Offshore Segment Definitions for Offshore Vessels and Structures 22 June 2016 5. Installation/ Construction vessels Sub-segment

Definition

Capacity Measure

5 (1)

Pure Pipe-laying vessels

Vessels which lay pipes on the sea-bottom. The various methods of laying: J-Lay, S-Lay, Reel Lay, Flexi-lay are indicated in sub-segment specific fields.

Maximum pipe laying depth

5(2)

Heavy lift crane vessels including SubSea Construction vessels (SSCV)

Cranes vessels are ships that are specialised in working heavy cargoes. The largest cranes in the world operate on offshore crane vessels. Monohull crane vessels have the advantage of a higher transit speed, but the maximum lifting capacity is achieved on semisubmersible crane vessels.

SWL of the crane

5(3)

Offshore Construction Vessels (OCV)

These are vessels of different sizes and capabilities. The work scope is ranging from diving support, pipe-laying and offshore sub-sea installation to clean-up operations after devastating disasters such as hurricanes.

DWT

5(4)

Windfarm Installation Units

Offshore wind farms is a new technology that harness renewable wind energy out at sea. Windfarm installation units are platforms/vessels that transport windmills and install them in offshore waters.

DWT

5(5)

Sheerlegs

Sheerlegs are a device mounted on a barge for lifting heavy weights. This device consists of two strong sections joined together at the top to which the lifting mechanism is attached. The lifting mechanism along with the barge is called Sheerlegs.

SWLof the crane

5(6)

Crane vessels

These are vessels that have cranes on board. They are not submersible, and they are not accommodation barges.

SWL of the crane

5(7)

Platform Installation & Pipelayer

Vessels which are capable of transporting heavy loads (offshore platforms/topsides/windmills) to offshore locations for installation. They are usually fitted with heavy lift cranes (greater than 4000mt SWL). Very often they are fitted with pipelaying equipment.

DWT

6. Seismic Exploration vessels

6(1)

Sub-segment

Definition

Capacity Measure

Seismic Exploration vessels

Seismic survey vessels locate subsea oil & gas bearing geological information, towing array of acoustic sensors(streamers).

No of streamers

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Worldyards Offshore Segment Definitions for Offshore Vessels and Structures 22 June 2016

7. Geophysical Survey vessels Sub-segment

7(1)

Geophysical survey vessels

Definition

Capacity Measure

Geological survey vessels perform detailed surveys and assessments of the seabed and the sub-seabed which are critical to the cost effective design of marine structures and subsea installations.

Length (loa)

8. Drilling Units

8(1)

8(2)

8(3)

Sub-segment

Definition

Capacity Measure

Jack-up Drilling rigs

Mobile bottom-supported offshore drilling structures with columnar or open-truss legs that support the deck. When positioned over the drilling site, the bottoms of the legs rest on the seafloor. Once the legs are firmly positioned on the bottom, the deck and hull height are adjusted and leveled.

Drilling depth

Semisubmersible drilling rigs

Floating offshore drilling units that have pontoons and columns that when flooded cause the unit to submerge in the water to a predetermined depth. These units have living quarters, storage space, on the main deck and dynamically positioned over the site, or anchored. In shallow water, some semi-submersibles can be ballasted to rest on the seabed. Semi-submersibles are more stable than drill ships and ship-shaped barges and are used extensively to drill wildcat wells in rough waters such as the North Sea.

Drilling depth

Drill ships

Self-propelled exploration vessels able to combine the features of a survey vessel and an oil rig. These ships are able to accommodate a high number of personnel and maintain their positions up to weeks at a time.

Drilling depth

9. Floating Production Units Sub-segment

Definition

Capacity Measure

9(1)

Semisubmersible Production Platforms

This type of platform consists of a rectangular deck supported by columns of submerged pontoons and is held in a fixed position by a spread mooring system. The deck contains the oil production equipment.

Production rate

9(2)

FPSO (Monohull)

Floating Production Storage Offloading Unit (FPSO) are installed in offshore oilfields and process crude oil in their topside equipment. Floating storage offloading (FSO) units are similar, but have storage and pumping equipment only.

Production rate

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Worldyards Offshore Segment Definitions for Offshore Vessels and Structures 22 June 2016

9(3)

9(4)

9(5)

Cylindrical type FPSO(Sevan)

The cylindrical type FPSO is an alternative to ship shaped production and storage solutions as well as semi-submersibles, TLPs and Spar platforms. It is a cylindrical shaped floating platform for oil storage and production. The unit is also known as a Sevan FPSO for the Norwegian company that developed the uniquely shaped design.

Production rate

SPAR/DDCV

The spar consists of a vertical cylindrical hull and may have production and oil storage capabilities. The draught is large and generally about 150 to 200 metres, which significantly reduces the vertical heave motion. Pitch and sway motions are resisted by a large metacentric height. The unit is also known as a Deep Draft Caisson Vessel.

Production rate

Tension leg Platform(TLP)

A Tension Leg Platform (TLP) is a floating platform which is connected to the seabed by vertical tendons or tethers. The tendons are kept under tension by the buoyancy of the platform and this pre-tension is designed to keep the tendons under tension under all circumstances, even in large waves.

Production rate

10. Floating Storage and Offloading Units Sub-segment

Definition

Capacity Measure

10(1)

FSO

Floating storage and offloading system, often a ship or bargeshaped floating hull incorporating tanks for storage of produced oil, and a method of loading the oil into tankers. These installations do not have any production or processing facilities.

Storage capacity (barrels)

10(2)

FSU

A floating facility intended for storage of oil/condensate/gas. Export may be by pipeline to an onshore facility or offloaded via STS operation to tankers.

cbm

11. Cryogenic Offshore Units

11(1)

11(2)

Sub-segment

Definition

Capacity Measure

LNG-FSRU

Liquefied Natural Gas – Floating Storage Regasification Units (LNG-FSRU) are offshore structures permanently anchored and performing storage and re-gasification processes on board. The FSRU will also receive LNG from ships. After re-gasification, the natural gas will be piped to shore via an undersea pipeline system.

cbm

LNG-FRU

Liquefied Natural Gas – Floating Regasification Units are offshore structures permanently anchored and performing regassification, but not storage, on board. The FRU will also receive LNG from LNG carriers (LNG-C) or FSUs. After regasification, the natural gas can be transported directly, without storage, to shore via a constructed pipeline system or to Floating Power Plants.

mmscfd

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Worldyards Offshore Segment Definitions for Offshore Vessels and Structures 22 June 2016

11(3)

11(4)

11(5)

11(6)

FLNG

LNG FPSO

LPG FPSO

LPG FSO

Floating Liquefied Natural Gas - A LNG ship that is installed with a re-liquefaction plant allowing it to re-liquefy boil-off gas and re-inject into onboard cargo tanks Liquefied Natural Gas – Floating, production, storage and offloading vessels (LNG FPSO). These are often a ship or bargeshaped floating hull incorporating tanks for storage of LNG. These installations have production or processing facilities. Liquefied Petroleum Gas – Floating, production, storage and offloading vessels (LPG FPSO). These are often a ship or bargeshaped floating hull incorporating tanks for storage of LPG and turret for offloading LPG. These installations have production or processing facilities. Liquefied Petroleum Gas Floating storage and offloading system, often a ship or barge-shaped floating hull incorporating tanks for storage of LPG and turret for offloading. These installations do not have any production or processing facilities.

cbm

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12. Miscellaneous Offshore vessels

12(1)

12(2)

Sub-segment

Definition

Pollution Control vessels

Pollution control or oil spill recovery vessels are vessels with specialised equipment or cargo used in the cleanup and collection of maine oil spills.

Seabed Mining vessels

Seabed mining vessels are engaged in deep sea mining retrieval processes on the ocean floor. Ocean mining sites are usually around large areas of polymetallic nodules or active and extinct hydrothermal vents at about 1,400 - 3,700m below the ocean’s surface.

Capacity Measure DWT

Water depth

Note : This document has the sub-segment definitions of offshore vessels and structures only. For the sub-segment definitions of the marine vessels, please refer to www.worldyards.com

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Worldyards Offshore Segment Definitions for Offshore Vessels and Structures 22 June 2016 All vessels less than 500 GT are not included in our database. The following vessels and structures are also excluded: Concrete gravity base structure (GBS), harbour tugs, salvage tugs, pushboats (towboats), liftboats (self-elevating boats) and canal barges .

This is a product of Worldoffshoreyards Pte Ltd (www.worldyardsoffshore.com). Reprinting or reproduction without explicit consent of Worldoffshoreyards Pte Ltd is prohibited.

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