![]() Boa Sub C and Skandi Neptune in April 2010 | |
History | |
---|---|
![]() | |
Name: | MSV Skandi Neptune |
Owner: | DOF Subsea |
Operator: | DOF Subsea |
Port of registry: | Bergen, Norway |
Builder: |
|
Yard number: | N243 [2] |
Completed: | November 2000 [2] |
Identification: |
|
Status: | in service |
General characteristics | |
Class and type: | +1A1, E0, DYNPOS AUTR, SF, DK+ |
Type: | Offshore Construction Vessel |
Tonnage: | 5,090 t DWT; 6,318 GT [5] |
Length: | 104 m [4] |
Beam: | 24 m |
Draught: | 7 m |
Installed power: | |
Propulsion: | azimuth thrusters and tunnel bow thrusters |
Speed: | 14.5 / 12.4 knots (max/ave) |
Aviation facilities: | Helideck |
Skandi Neptune is an Offshore Construction Vessel that was operated by Subsea 7 from 2005 until the charter was ended in 2015.
Subsea 7 S.A. is a subsea engineering, construction and services company serving the offshore energy industry. The company is registered in Luxembourg with its headquarters in London in the United Kingdom.
The Skandi Neptune was built in 2001 as a cable layer. In 2005, she was converted to a multi-purpose offshore support vessel and began a long term charter to Subsea 7. [7] [8]
A cable layer or cable ship is a deep-sea vessel designed and used to lay underwater cables for telecommunications, electric power transmission, or other purposes. Cable ships are distinguished by large cable sheaves for guiding cable over bow or stern or both. Bow sheaves, some very large, were characteristic of all cable ships in the past, but newer ships are tending toward having stern sheaves only, as seen in the photo of CS Cable Innovator at the Port of Astoria on this page. The names of cable ships are often preceded by "C.S." as in CS Long Lines.
In 2010, Skandi Neptune provided ROV capability during the oil spill following an explosion on the Deepwater Horizon in the Gulf of Mexico. [9]
A remotely operated underwater vehicle (ROV) is a tethered underwater mobile device. This meaning is different from remote control vehicles operating on land or in the air. ROVs are unoccupied, highly maneuverable, and operated by a crew either aboard a vessel/floating platform or on proximate land. They are common in deep water industries such as offshore hydrocarbon extraction. They are linked to a host ship by a neutrally buoyant tether or, often when working in rough conditions or in deeper water, a load-carrying umbilical cable is used along with a tether management system (TMS). The TMS is either a garage-like device which contains the ROV during lowering through the splash zone or, on larger work-class ROVs, a separate assembly which sits on top of the ROV. The purpose of the TMS is to lengthen and shorten the tether so the effect of cable drag where there are underwater currents is minimized. The umbilical cable is an armored cable that contains a group of electrical conductors and fiber optics that carry electric power, video, and data signals between the operator and the TMS. Where used, the TMS then relays the signals and power for the ROV down the tether cable. Once at the ROV, the electric power is distributed between the components of the ROV. However, in high-power applications, most of the electric power drives a high-power electric motor which drives a hydraulic pump. The pump is then used for propulsion and to power equipment such as torque tools and manipulator arms where electric motors would be too difficult to implement subsea. Most ROVs are equipped with at least a video camera and lights. Additional equipment is commonly added to expand the vehicle's capabilities. These may include sonars, magnetometers, a still camera, a manipulator or cutting arm, water samplers, and instruments that measure water clarity, water temperature, water density, sound velocity, light penetration, and temperature. Also optical-stero cameras have been mounted on ROVs in order to improve the pilots' perception of the underwater scenario.
An oil spill is the release of a liquid petroleum hydrocarbon into the environment, especially the marine ecosystem, due to human activity, and is a form of pollution. The term is usually given to marine oil spills, where oil is released into the ocean or coastal waters, but spills may also occur on land. Oil spills may be due to releases of crude oil from tankers, offshore platforms, drilling rigs and wells, as well as spills of refined petroleum products and their by-products, heavier fuels used by large ships such as bunker fuel, or the spill of any oily refuse or waste oil.
Deepwater Horizon was an ultra-deepwater, dynamically positioned, semi-submersible offshore drilling rig owned by Transocean. Built in 2001 in South Korea by Hyundai Heavy Industries, the rig was commissioned by R&B Falcon, registered in Majuro, and leased to BP from 2001 until September 2013. In September 2009, the rig drilled the deepest oil well in history at a vertical depth of 35,050 ft (10,683 m) and measured depth of 35,055 ft (10,685 m) in the Tiber Oil Field at Keathley Canyon block 102, approximately 250 miles (400 km) southeast of Houston, in 4,132 feet (1,259 m) of water.
Skandi Neptune has two stern azimuth thrusters, a retractable forward azimuth thruster and two bow tunnel thrusters. Combined with a class 2 DGPS system, these provide excellent manoeuvring capabilities. [7]
An azimuth thruster is a configuration of marine propellers placed in pods that can be rotated to any horizontal angle (azimuth), making a rudder unnecessary. These give ships better maneuverability than a fixed propeller and rudder system.
She has accommodation for 106 persons in single and double cabins. The helideck is rated for Super Puma L2s. [7]
The stern A-Frame is rated at 60 tonne SWL, the deck crane at 250 tonne SWL. The moon pool and 130 tonne traction winch allow the installation of flexible pipe. [7]
A moon pool is a feature of marine drilling platforms, drillships and diving support vessels, some marine research and underwater exploration or research vessels, and underwater habitats, in which it is also known as a wet porch. It is an opening in the floor or base of the hull, platform, or chamber giving access to the water below, allowing technicians or researchers to lower tools and instruments into the sea. It provides shelter and protection so that even if the ship is in high seas or surrounded by ice, researchers can work in comfort rather than on a deck exposed to the elements. A moon pool also allows divers or small submersible craft to enter or leave the water easily and in a more protected environment.
Skandi Neptune can operate as a pipe-laying ship and provides ROV support.
A diving support vessel is a ship that is used as a floating base for professional diving projects.
MSV Fennica is a Finnish multipurpose icebreaker and platform supply vessel. Built in 1993 by Finnyards in Rauma, Finland and operated by Arctia Offshore, she was the first Finnish icebreaker designed to be used as an escort icebreaker in the Baltic Sea during the winter months and in offshore construction projects during the open water season. Fennica has an identical sister ship, Nordica, built in 1994.
Saipem 7000 is the world's second largest crane vessel, after the Thialf. The crane radius of the Saipem 7000 grants a lifting capability of 14,000 tonnes at 42 meters while the Thialf can lift 14,200 tonnes at 31.2 meters. It is owned by the oil and gas industry contractor Saipem S.p.A.
Subsea is fully submerged ocean equipment, operations or applications, especially when some distance offshore, in deep ocean waters, or on the seabed. The term is frequently used in connection with oceanography, marine or ocean engineering, ocean exploration, remotely operated vehicle (ROVs) autonomous underwater vehicles (AUVs), submarine communications or power cables, seafloor mineral mining, oil and gas, and offshore wind power.
DOF ASA is a Norwegian supply shipping company.
DOF Subsea is an international subsea operating company. The company provides integrated project managed and engineered subsea solutions to the global offshore oil and gas industry. The company offers services to oil and gas producing regions around the world. Assets include 26 offshore vessels, 52 Remotely operated vehicles, 1 Autonomous underwater vehicle and 11 diving spreads. The company has been operating since the 1980s. Supplied subsea services include seabed mapping, survey, repair and maintenance of subsea structures, construction support and engineering.
SCF Sakhalin is a Russian icebreaking platform supply and standby vessel owned by SCF Sakhalin Vessels Limited, a subsidiary of Sovcomflot. The ship was built by Aker Finnyards Helsinki shipyard in Finland in 2005 as FESCO Sakhalin for Far East Shipping Company (FESCO), but was purchased by Sovcomflot and renamed in 2010. Since the beginning it has been in long-term charter for Exxon Neftegas Ltd. and used to supply oil platforms in the Sakhalin-I project.
Oceaneering International, Inc. is a subsea engineering and applied technology company based in Houston, Texas, U.S. that provides engineered services and hardware to customers who operate in marine, space, and other environments.
Grup Servicii Petroliere is a Romanian company providing offshore integrated services for oil and gas industry. The company, established in 2004, is a member of UPETROM Group.
ORV Sagar Nidhi is an ice-strengthened multidisciplinary vessel operated by the National Institute of Ocean Technology, India. It was constructed at Fincantieri, Italy. The 104 metre long vessel has fully automatic diesel-electric propulsion equipped with dynamic positioning system, azimuth thrusters, and a winch to hoist 60 tonnes from a depth of 6,000 metres.
The FPSO Noble Seillean was a dynamically positioned floating oil production, storage and offloading vessel.
Q4000 is a multi-purpose oil field construction and intervention vessel ordered in 1999 by Cal Dive International, and was built at the Keppel AmFELS shipyard in Brownsville, Texas for $180 million. She was delivered in 2002 and operates under the flag of the United States. She is operated by Helix Energy Solutions Group. The original Q4000 concept was conceived and is owned by SPD/McClure. The design was later modified by Bennett Offshore, which was selected to develop both the basic and detailed design.
Helix Energy Solutions Inc., known as Cal Dive International prior to 2006, is an American oil and gas services company headquartered in Houston, Texas. The company is a global provider of offshore services in well intervention and ROV operations of new and existing oil and gas fields.
HMS Protector is a Royal Navy ice patrol ship built in Norway in 2001. As MV Polarbjørn she operated under charter as a polar research icebreaker and a subsea support vessel. In 2011, she was chartered as a temporary replacement for the ice patrol ship HMS Endurance and was purchased outright by the British Ministry of Defence in September 2013.
MSV Botnica is a multipurpose offshore support vessel and icebreaker built by Finnyards in Rauma, Finland, in 1998. She was the newest and technically most advanced state-owned icebreaker of Finland until 2012, when she was sold to the Port of Tallinn for 50 million euro. Botnica is used as an escort icebreaker in the Baltic Sea during the winter months, but carries out subsea and offshore construction works worldwide during the open water season.
Australian Defence Vessel (ADV) Ocean Protector is an armed patrol vessel used by the Customs Marine Unit of the Australian Border Force.
MSV Nordica is a Finnish multipurpose icebreaker and platform supply vessel. Built in 1994 by Finnyards in Rauma, Finland and operated by Arctia Offshore, she and her sister ship Fennica were the first Finnish icebreakers designed to be used as escort icebreakers in the Baltic Sea during the winter months and in offshore construction projects during the open water season.
Australian Border Force Cutter (ABFC) Ocean Shield is an offshore patrol vessel operated by the Australian Border Force. The ship was originally ordered in 2010 by DOF Subsea as an offshore support vessel, and was laid down by STX OSV as MSV Skandi Bergen in 2011. In 2012, the Australian Department of Defence was seeking a short-term replacement for the decommissioned Kanimbla-class amphibious landing ships, and negotiated to purchase the under-construction Skandi Bergen from DOF Subsea. The ship was completed, and entered Royal Australian Navy (RAN) service in mid-2012 as the civilian-crewed Australian Defence Vessel (ADV) Ocean Shield.
Turva is a Finnish offshore patrol vessel. Built in 2014 by STX Finland Rauma shipyard for the Finnish Border Guard, she is the largest vessel of the fleet as well as the first patrol vessel in Finland powered by liquefied natural gas (LNG).
TechnipFMC plc is a UK-based company that provides complete project life cycle services for the energy industry. TechnipFMC was ranked 23rd among world's Top 225 International Design Firms in the year 2017 by Engineering News-Record. It was formed by the merger of FMC Technologies of the United States and Technip of France that was announced in 2016 and completed in 2017. TechnipFMC acts in three distinct segments: subsea, Offshore Onshore and surface projects. These projects include offshore oil and gas exploration and extraction platforms, rigs, crude oil refinery, petrochemical plants such as Ethylene, Hydrogen, SynGas plants, Naptha, Benzene etc. plastics & rubber industry, fertiliser plant, onshore as well as floating LNG plants. It is headquartered in London, and has major operations in Houston and Paris where its predecessor companies were headquartered. It has 44,000 employees from 126 nationalities and operates in 48 countries. TechnipFMC stock is listed on the NYSE and Euronext Paris exchange, and is a component of both the US S&P 500 and the French CAC 40 major stock market indices. The French government owns 4 percent stake in the company.