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14 Types of Ships with Dynamic Positioning System

  • As the applications of Dynamic Positioning System increase in the maritime industry, different types of ships are now being fitted with DP systems to improve control and handling over vessels at sea.

     

    Though dynamic positioning enabled vessels are commonly used for offshore operations, many modern cargo and passenger vessels are also being fitted with DP systems.

    Below are a some of the main types of vessels that are provided with DP systems these days –

    1. Platform supply vessel (PSV) / Offshore Support Vessel (OSV)

    Platform supply vessels are specially designed to supply to offshore platforms and rigs, and  are considered one of the most common types of vessels using the DP system. These ships can range from 50 to 100 meters in length and are capable of carrying out a diversity of tasks. They primarily support offshore platforms by means of transporting necessary supplies to and from a platform and supply base ashore.

    Platform Supply Vessel

      July 22, 2016 3:38 PM EEST
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  • 2. Diving Support (DSV’s) and ROV Support Vessels

    Many DP vessels are specially designed for supporting commercial sub-sea operations such as diving. Diving Support Vessels are thus used for this purpose. Divers are required to carry out inspections or survey jobs, installations and configurations of sub-sea equipment, monitoring an operation, and recovery of lost or abandoned equipment. ROVs or Remotely Operated Vehicles are gradually substituting the divers in most of the jobs, but there definitely are certain tasks that cannot be carried out remotely as they require manual involvement.

    Diving Support Vessel

      July 22, 2016 3:38 PM EEST
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  • 3. Drill Ships

    For shallow water and deep water drilling operations, it is vital for the vessel to keep station (maintain her position within 1m) over the oil/gas well, such that the riser connecting the vessel to the well is nearly upright and vertical. Drill Ships are therefore fitted with dynamic positioning systems. The lower main riser angle is continuously monitored and maintained up to accurate levels in order to avoid unwanted disconnections. Presently, the DP rigs and vessels are configured in a way to operate in water depths of up to 3000 m or more with the help of high tech DGPS and Long Baseline (LBL) acoustic systems within the DP module.

      July 22, 2016 3:39 PM EEST
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  • 4. Cable Lay and Repair Vessels

    Modern day fibre-optic cables that are used to connect the world through the ‘World wide web’ are more fragile than previously used thicker traditional cables; hence they have more limitations and restrictions on loading and bending. To avoid heavy losses structurally to these cables it is now very common to use DP vessels for the cable laying and repairing jobs. Most of the modern cable laying ships are installed with DP systems.

    Cable Lay and Repair Vessels

      July 22, 2016 3:39 PM EEST
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  • 5. Pipe Laying Ships

    Many pipe-lay operations are carried out by DP capable lay barges or pipe laying ships. On the barge, the pipe is assembled or sometimes even constructed through a number of phases of welding which are carried out in a linear pipe manufacturing facility.

    Pipe Laying Ships

      July 22, 2016 3:39 PM EEST
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  • 6. Dredgers

    These days most of the newer generation dredgers now use DP methods to carry out the dredging operations safely and accurately along analogous tracks.

    Dredgers

    As the tracks must be close to each other without substantial overlaps, using DP system a high level of accuracy is achieved when dredging in restricted and confined waters.

      July 22, 2016 3:39 PM EEST
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  • 7. Crane Barge or Crane Vessel

    Crane barges or crane vessels help in manufacturing and de-assembly operations related to the oil and gas industries. These kinds of vessels are also utilized in salvage and wreck removal operations. Many crane barges and construction vessels these days are DP capable.

    Crane Barge

      July 22, 2016 3:40 PM EEST
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  • 8. Rock Dumping Vessels

    Rock dumping vessels are utilized so as to dump rock on the seabed as precisely in a safe location as possible to provide protection to pipelines. These vessels are thus fitted with DP systems, which enable a good track-speed control to facilitate even rock distribution along a planned track. This type of vessel is also helpful in providing sufficient protection against the risks of tidal erosion, which occur in high tidal stream areas.

    rock dumping vessel

      July 22, 2016 3:40 PM EEST
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  • 9. Passenger Vessels

    Modern passenger vessels have shallow draught in order to allow safe access to a greater range of cruising destinations and are so designed that they are now able to carry more passengers than ever before, even with larger freeboards. This shallow-draught and high-freeboard combination and configuration may lead to multiple ship handling issues in tighter berthing locations.

    Passenger Vessels

    DP thus provides the answer to manoeuvring, berthing and even anchoring of these man-made lavish floating hotels to be much safer for the crew and passengers.

      July 22, 2016 3:40 PM EEST
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  • 10. Specialist – Semi-submersible Heavy-Lift Vessels

    Ships those are capable of carrying heavy equipment or lifts in general to the remotest locations will often experience difficulty while loading and off-loading their cargoes. Out of these, some of the vessels are mono-hulled or semi-submersible and can immerse themselves to loading draught, thus allowing the cargo to be floated on board.

    Semi-submersible Heavy-Lift Vessels

    A typical example of the cargo may be a drilling rig for transportation over a large distance. DP fitted on these vessels can be used for position maintenance during the loading and offloading operations.

      July 22, 2016 3:40 PM EEST
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  • 11. Mobile Offshore Drilling Units / Ships (MODUs)

    DP is, with the current scenario, the only option in deepwater offshore fields.

    Mobile Offshore Drilling Units

    Even in shallower waters, the use of the DP system is increasingly being used for the positioning of drilling rigs before anchoring. Specially, with the short duration drilling, DP saves a lot of time.

      July 22, 2016 3:41 PM EEST
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  • 12. Shuttle Tanker

    A shuttle tanker, as the name suggests, is a ship designed for transportation of oil or gas from an offshore oil field to wherever it may be required. It is highly sophisticated and well equipped with loading and offloading equipment compatible with the oil field infrastructures.

    Shuttle Tanker

    The position keeping for longer durations of the ships is generally carried out with the help of Dynamic Positioning and is done with respect to the arrangement of the installations or FPSOs. Well backed-up safety systems ensure that the potentially flammable oil and natural gas are handled safely.

      July 22, 2016 3:41 PM EEST
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  • 13. Floating Production, Storage and Offloading unit or FPSO Ships

    Floating Production, Storage and Offloading unit is a floating vessel principally used by the offshore industry for the processing and storage of oil and gas. The FPSO vessels are designed to receive oil or gas which is produced from the nearby platforms or sub-sea patterns, process it, and store it until the oil or gas can be offloaded onto a seagoing tanker or transported through a pipeline.

    FPSO

    FPSO’s are normally converted oil or gas tankers or can be vessels built specially for the usage and application. A vessel that is only used for oil storage purposes is called a Floating Storage Unit (FSU).

      July 22, 2016 3:42 PM EEST
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  • 14. Naval Vessels and Operations

    A number of advanced nations are making good use of DP systems within their naval, coast guard and auxiliary fleets.

    Naval Vessels and Operations

    Vessels used up for sea – mine countermeasures, amphibious landing, submarine rescue and pollution control are all good examples of vessels with DP systems fitted and for good use.

    Do you know any other type of vessels that are fitted with dynamic positioning system? Let us know in the comments below.

     

    source http://www.marineinsight.com/types-of-ships/14-types-of-ships-with-dynamic-positioning-system/

    This post was edited by Crewell Admin at July 22, 2016 3:45 PM EEST
      July 22, 2016 3:42 PM EEST
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  • I have 22 months offshore osv vessels experience any job for me please contact me
      July 31, 2016 11:41 AM EEST
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  • Also more and more research vessels are being fitted with DP and also AHTS vessels,allthough not as much used except for supply duties.
    This post was edited by Capt jack sparrow at August 1, 2016 10:42 AM EEST
      August 1, 2016 10:41 AM EEST
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      August 1, 2016 7:15 PM EEST
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  • Am a Nigerian, work with a supply vessel and accommodation barge as AB and HLO at exxon mobil expansion project in Nigeria water. Am searching for a marine in the field of my experience. Thanks

      August 2, 2016 11:05 AM EEST
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