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dynamic positioning operators manualIf you continue without changing your settings, we will assume you are happy to receive all cookies from our website. However, if you would like to change how cookies are used, you can change your browsers cookie settings at any time to delete or prevent cookies from this website being used. How to edit - you can read HERE And do not forget to download back your torrent file from tracker and add it once again to your torrent client, otherwise nobody can download your release. Next time do it by yourself. Dynamic positioning systems require specially trained and skilled personnel to handle the systems at sea. The dynamic positioning operator (DPO) needs to be trained appropriately before taking up the reins of the demanding profession. Several maritime institutes offer a recognised course in dynamic position systems successfully aiding individuals to gain the requisite knowledge. Know more about the various DP courses providers in Asia. These progressing graduations can be listed down as follows: The course offers and individual all the primary know-how about dynamic positioning. Also referred to as the DP advanced simulator course, this course enables an individual to further the knowledge gained through the basic course and the practical training. And while individuals can opt for watch-keeping lessons with a Grade I vessel (like in Step II), their dynamic positioning operator certification would be restricted. This certification along with the remarks provided by chief of DP operations is forwarded to the Nautical Institute. This institute is the recognised authority for issuing the dynamic position operator’s validation certificate. An individual needs to be very cautious and careful so that no problems arise while the person is on active duty aboard the ship. Any carelessness or inattentiveness could lead to magnified problems for the vessel and execution of its important operations Got questions?http://immobilieninvestors.com/userfiles/coralife-biocube-owners-manual.xml
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Visit the community forum to ask questions, get answers, meet people, and share your tips! The additional documentation from shipping company is required to be submitted with every application where confirmed the total time of applicant has performed as a DP operator on board. Like working offshore. Or If I do myself is there job availability? Do you know vacancy? I just had a few questions regarding this profession as I am currently working on mainstream ships and would like to shift over. Once you’ve obtained a dp certificate, how do you become a master in the same field. Best Regards. I am very much interested in DP and want to persue a career in that. Can you please guide me regarding how to proceed further. But all my cert’s have lapsed. If you continue to use this site we will assume that you are happy with it. Ok Read more. Discover everything Scribd has to offer, including books and audiobooks from major publishers. Start Free Trial Cancel anytime. Report this Document Download Now Save Save K-Pos Operator Manual For Later 100 (5) 100 found this document useful (5 votes) 3K views 362 pages K-Pos Operator Manual Uploaded by TonyShinto81 Description: Dynamic Positioning Operators Manual Full description Save Save K-Pos Operator Manual For Later 100 100 found this document useful, Mark this document as useful 0 0 found this document not useful, Mark this document as not useful Embed Share Print Download Now Jump to Page You are on page 1 of 362 Search inside document Browse Books Site Directory Site Language: English Change Language English Change Language. Use the menu to find your page. What could have happened and what next. The link you clicked, may contain an error; The page can be deleted or renamed; or, but that's very unlikely, you may have made a typo. Terms and Conditions General Purchase Conditions Cookies Privacy Statement. It is designed to supplement DP system user manuals and to enhance safety of DP planning and use.http://doingbusinessinargentina.com/userfiles/coralife-digital-day-night-timer-manual.xml It includes the latest text from IMO MSC 98. This book comprehensively explains DP principles and procedures for all users, reinforcing the theory throughout with full-colour illustrations and photographs. It looks in detail at position measurement, position keeping, system tests, Class requirements and the functions available to the DP operator. It also describes planning of a DP operation, including risk assessment, operational considerations, safety features and contingency plans. It describes processes for identifying critical single point failures, so that they can be eliminated or minimised at an early stage. It also describes common failures and emergencies, using case studies to illustrate how they may be avoided. It identifies critical stages in these operations together with the applicable DP functions. He was involved with a variety of offshore He taught at DP training centres in Singapore, The company was a leading global The author has researched various sources in piecing the topics together, including system and equipment manufacturers. It has taken years in being published by Witherby, a move engineered by Peter Aylott who was a Director at the NI before becoming one at C-MAR. Besides theory, the book contains excellent diagrams and pictures, the publishers having spared no effort. Chapters include examples of DP incidents, tables of guidance related to DP Operations from IMCA, and MTS. He trained at various DP Centres of C-MAR Group and is an associate of DP Nautical Ltd, UK. It may be considered a bit pricey, but most technical publications are. Witherby has simultaneously offered a handy electronic version.The striking aspect of the book is that the author has made excellent use of pictures and diagrams to illustrate various aspects of DP theory and operations. The book fully achieves the objective of bridging the knowledge gap between the DP users and the plethora of documents on guidelines, rules, regulations and operations.https://labroclub.ru/blog/bose-rc18t1-27-user-manual The book is a mini encyclopedia giving all the information on complex system of DP in a comprehensive format and is much more than a DP text book. The book is divided into four parts; first part covers theory of DP, second DP equipment, third part covers trials, tests and failures and the last part is on role of DP vessels. The book is truly wholesome in its content. DP systems have vastly improved in last six decades and procedures have evolved to make operations safer. Every element of DP system has improved over the years; be it position reference systems, sensors, thrusters, power management, human machine interface to make DP systems more reliable, better performing and safe. Accordingly revision of rules, regulations and procedures too was necessitated to incorporate the advances and newer technologies. Since inception DP has found application in more and more type of ships due to its versatility which even Howard Shatto perhaps would not have imagined. With DP making such rapid strides Capt. Shukla’s book is very timely for the readers of this subject. The book is well researched and updated on all aspects of dynamic positioning. The references at the end of the book indicate that while compiling he has taken into consideration the views and wisdom of the experts in the field of DP who presented papers in various DP conferences over the years. The catalog of latest IMO and IMCA guidelines are particularly useful to the student of DP.Why not review it? It consisted of four manoeuvring thrusters fitted to a barge, with an arrangement of transmitters attached to anchored buoys working with the onboard radar to maintain a position relative to the seabed during drilling. DP systems have now evolved into complex, accurate and reliable systems that are used in operations that range from geological surveys to cruise ship manoeuvring. Most vessels used in the offshore industry are fitted with DP systems and many non-DP vessels are being upgraded.http://garrisonjazz.com/images/canon-l2000-service-manual.pdf Other methods are still used for maintaining position, including spread and fixed moorings and jacking-up. However, vessels using moorings or legs may also occasionally have DP systems to assist in setting up at the work site. The platforms may be floating or fixed on the seabed and may be connected to dozens of wellheads. Semi-submersible A semi-submersible platform consists of a hull with columns and pontoons that provide buoyancy and keep the hull upright. The platforms can be moved from place to place under tow or under their own propulsion. They are kept in place by either mooring or by using DP and are capable of operating in very deep waters and in very rough weather due to the shape of the hull. Dynamic Positioning System The complete installation necessary for dynamically positioning a vessel comprising, but not limited to, the following sub-systems: a) power system b) thruster system c) DP control system. Power System All components and systems necessary to supply the DP system with power. The power system includes, but is not limited, to: a) prime movers with necessary auxiliary systems including piping, fuel, cooling, pre-lubrication and lubrication, hydraulic, pre-heating, and pneumatic systems b) generators c) switchboards d) distribution systems (cabling and cable routeing) e) power supplies, including uninterruptible power supplies (UPS) f) power management system(s). Thruster System All components and systems necessary to supply the DP system with thrust force and direction. The thruster system includes: a) Thrusters with drive units and necessary auxiliary systems including piping, cooling, hydraulic, and lubrication systems, etc b) main propellers and rudders, if these are under the control of the DP system c) thruster control systems d) manual thruster controls e) associated cabling and cable routeing. DP Control System All control components and systems, hardware and software necessary to dynamically position the vessel. Worst-case Failure (WCF) The identified single fault in the DP system resulting in maximum detrimental effect on DP capability as determined through the FMEA. 2.2 Components of a Dynamic Positioning System A free floating vessel is subject to the environmental forces of wind, waves and current, resulting in movement of the vessel in surge, sway and yaw axes and roll, pitch and heave. Roll, pitch and heave, however, cannot be controlled by the DP system. Movement of the vessel in surge and sway is measured by position reference systems (PRS). Yaw is measured by gyro. This is used when a very accurate heading control is required at high speeds or when a vessel has a hull shape that makes it difficult to control the heading. Measurements of the vessel’s ROT are received from the gyros or a dedicated ROT sensor. A speed sensor can be used in addition to position measurement to improve the vessel’s speed control. The speed information is received from sources such as a Doppler log and GPS speed sensors. The influence of external forces from DP operations such as cable lay, pipe lay, mooring, etc that have a direct impact on DP performance should be considered and factored into the DP system. Such data inputs, if possible, should be provided automatically to the DP control system, in addition to manual input. 2.2.6 Power System A DP vessel may have a much higher electrical power requirement than a conventional vessel as most of the thrusters are electrically powered. Some DP vessels have all thrusters driven electrically. Power generated is fed to the buses, which in turn feed the respective thrusters and other services connected to the bus, shown in Figure 2.10. To provide redundancy, two or more independent buses are provided. The buses are connected with a bus-tie. Besides the main switchboard, an emergency switchboard is provided for the emergency power supply. An uninterruptible power supply (UPS) provides 24 V battery backup for at least 30 minutes to ensure uninterrupted and clean power supply to the DP system. A power management system (PMS) automatically controls the power system to provide the optimum load balance and load sharing between the generators and will start standby generators to prevent blackout. Should a generator fail or be non- operational, the PMS will automatically shed non- essential loads before power consumption reaches maximum available power. The PMS will also prevent non-essential loads from starting should there be insufficient power available to start and run the load. 2.2.7 Human Machine Interface (HMI) The Human Machine Interface (HMI) enables the operator to interact with the system shown in Figure 2.11 and permits emergency intervention through the use of input operational commands. Provisions are made to reduce the risk of an inadvertent act by the operator. HMIs are ergonomically designed and provide effective presentation of relevant information. All important operational controls are provided on the operator panel for main modes of operation, position reference systems, sensors, thrusters and other functions. Indicator lights assess their status. Frequently-used functions and information are available on the panel for quick browsing.If the limit for a particular sensor is exceeded, the relevant interface or sensor is considered as faulty and a warning message is initiated. Gyro The gyro plays a very important role as a sensor as it inputs the heading of the vessel and its accuracy is critical in individual PRS measurements. The magnitude of inaccuracy due to gyro error will depend on the location of the PRS with respect to the COR. Usually, only roll and pitch are required to be corrected. Heave correction is used in helicopter operations, HPR system, diving and dredging operations. Loss or error in MRU output will degrade the positional information from the PRSs and thus position keeping of the vessel. Wind Sensor Wind sensors measure relative wind direction and speed. They are installed in different locations on the vessel to capture the uninterrupted flow of wind acting on the hull. Output from the wind sensors is corrected as the wind acting on the hull and the wind sensed on the anemometers may vary due to their location and altitude, as shown in Figure 2.9. Based on the wind sensors’ output, an equal and opposite force is applied by the thrusters to counter the effect of the wind force on the hull. This prevents unwanted vessel movement due to a gust of wind. If the wind on the sensor differs from the wind experienced on the hull, due to shadow on the wind sensor or the hull, it may result in undesired movement of the vessel. In such situations, the operator should deselect all the wind sensors as a precautionary measure. The draught may be input manually by the operator or automatically through the draught sensor. A dynamic positioning operator (DPO) is a specialist post within the Merchant Navy; they are primary watch keeper at the DP control desk, operating and monitoring the DP system and monitoring logistic operations around the vessel. Actual pay rates may vary, depending on: The employer provides food and accommodation while at sea. It is common for pay to be a daily rate as contracts can last for a few weeks or months at a time, rather than being a permanent job with a yearly salary. Day rates can range from ?210 to ?400 a day. See their website for details and entry requirements. See their website for details and entry requirements. The sponsoring company may have additional entry requirements to the colleges. A list of employers is on the Merchant Navy Training Board website. A lot of jobs are in the offshore oil and gas industry. There are two DP training schemes: Offshore and Shuttle Tanker. This is to enable certification for different types and classes of vessel. You start off as junior dynamic positioning operator and move on to senior DPO. You can also become a dynamic positioning instructor. Officers can also use their skills to transfer to managerial roles in other industrial and commercial sectors. The MNTB websites also have useful careers information. Please help to improve this article by introducing more precise citations. ( June 2010 ) ( Learn how and when to remove this template message ) Both are equipped with DP systems. Position reference sensors, combined with wind sensors, motion sensors and gyrocompasses, provide information to the computer pertaining to the vessel's position and the magnitude and direction of environmental forces affecting its position. Examples of vessel types that employ DP include, but are not limited to, ships and semi-submersible mobile offshore drilling units (MODU), oceanographic research vessels, cable layer ships and cruise ships.This knowledge, combined with the sensor information, allows the computer to calculate the required steering angle and thruster output for each thruster. This allows operations at sea where mooring or anchoring is not feasible due to deep water, congestion on the sea bottom (pipelines, templates) or other problems.One may also position the ship at a favorable angle towards wind, waves and current, called weathervaning.With drilling moving into ever deeper waters, Jack-up barges could not be used any more, and anchoring in deep water was not economical.The Mohole project was attempting to drill to the Moho, which required a solution for deep water drilling. It was possible to keep the ship in position above a well off La Jolla, California, at a depth of 948 meters.The ship's position was determined by radar ranging to buoys and sonar ranging from subsea beacons.Besides that, DP nowadays is not only used in the oil industry, but also on various other types of ships. In addition, DP is not limited to maintaining a fixed position any more. One of the possibilities is sailing an exact track, useful for cablelay, pipelay, survey and other tasks.All have their own advantages and disadvantages.With container operations, crowded ports can be made more efficient by quicker and more accurate berthing techniques.In particular, for good control of position in adverse weather, the thrust capability of the ship in three axes must be adequate.Most traditional methods used for ships navigation are not accurate enough for some modern requirements. For that reason, several positioning systems have been developed during the past decades. The applications and availability depends on the type of work and water depth.The position obtained by GPS is not accurate enough for use by DP. The position is improved by use of a fixed ground-based reference station (differential station) that compares the GPS position to the known position of the station. The correction is sent to the DGPS receiver by long wave radio frequency. For use in DP an even higher accuracy and reliability is needed. Companies such as Veripos, Fugro or C-Nav supply differential signals via satellite, enabling the combination of several differential stations. The advantage of DGPS is that it is almost always available.The transducer sends an acoustic signal (by means of piezoelectric elements) to the transponder, which is triggered to reply. As the velocity of sound through water is known (preferably a soundprofile is taken regularly), the distance is known. Because there are many elements on the transducer, the direction of the signal from the transponder can be determined. Now the position of the ship relative to the transponder can be calculated. Disadvantages are the vulnerability to noise by thrusters or other acoustic systems. The use is limited in shallow waters because of ray bending that occurs when sound travels through water horizontally. Three types of HPR systems are commonly used:This works as described above. Because the angle to the transponder is measured, a correction needs to be made for the ship's roll and pitch. These are determined by Motion Reference Units. Because of the nature of angle measurement, the accuracy deteriorates with increasing water depth. This consists of an array of at least three transponders. Once that is done, only the ranges to the transponders need to be measured to determine a relative position. The position should theoretically be located at the intersection of imaginary spheres, one around each transponder, with a radius equal to the time between transmission and reception multiplied by the speed of sound through water. Because angle measurement is not necessary, the accuracy in large water depths is better than USBL. This works with an array of transducers in the ship's hull. These determine their position to a transponder, so a solution is found in the same way as with LBL.On drillships, riser angle monitoring can be fed into the DP system. It may be an electrical inclinometer or based on USBL, where a riser angle monitoring transponder is fitted to the riser and a remote inclinometer unit is installed on the Blow Out Preventer (BOP) and interrogated through the ship's HPR. The oldest position reference system used for DP is still very accurate in relatively shallow water. A clumpweight is lowered to the seabed. By measuring the amount of wire paid out and the angle of the wire by a gimbal head, the relative position can be calculated. Care should be taken not to let the wire angle become too large to avoid dragging. For deeper water the system is less favourable, as current will curve the wire. There are however systems that counteract this with a gimbal head on the clumpweight. Horizontal LTW's are also used when operating close to a structure. Objects falling on the wire are a risk here. These are laser based position reference systems. They are very straightforward system, as only a prism cluster or tape target needs to be installed on a nearby structure or ship. Risks are the system locking on other reflecting objects and blocking of the signal. However, the Cyscan Absolute Signature which was released in 2017 was launched to address this issue. It is able to engage in an active lock with the Absolute Signature prism which reduces the chance of a wrong target being tracked. Range depends on the weather, but is typically more than 500 meters.A unit is placed on a FPSO (Fixed Station) and the unit on board the Shuttle Tanker (Mobile Station) locks to report the Range and Bearing. The range is in excess of 4 kilometers. Advantage is the reliable, all-weather performance. Disadvantage is that the unit is rather heavy and costly.Commonly used on shuttle tankers while loading from a FPSO. Both will have a GPS receiver. As the errors are the same for the both of them, the signal does not need to be corrected. The position from the FPSO is transmitted to the shuttle tanker, so a range and bearing can be calculated and fed into the DP system. These are radar based system, while the RADius have no moving parts, the RadaScan has a rotating antenna under the dome. These systems usually have responders which are active targets that sends the signal back to the sensor to report the range and bearing.A pipelay ship may measure the force needed to pull on the pipe, large crane vessels will have sensors to determine the cranes position, as this changes the wind model, enabling the calculation of a more accurate model (see Control systems). In these cases, the offset force is deduced over a period of time, allowing an average value of compensating thrust to be applied.Of course, this model is not entirely correct. The ship's position and heading are fed into the system and compared with the prediction made by the model. This difference is used to update the model by using Kalman filtering technique. For this reason, the model also has input from the wind sensors and feedback from the thrusters. This method even allows not having input from any PRS for some time, depending on the quality of the model and the weather. This process is known as dead reckoning.While a DGPS has a high accuracy and precision, a USBL can have a much lower precision. For this reason, the PRS's are weighted. Based on variance a PRS receives a weight between 0 and 1.DP ships are usually at least partially diesel-electric, as this allows a more flexible set-up and is better able to handle the large changes in power demand, typical for DP operations. These fluctuations may be suitable for hybrid operation.A Class 1 can be relatively simple, whereas the system of a Class 3 ship is quite complex. On Class 2 and 3 ships, all computers and reference systems should be powered through a UPS.Loss of position may occur in the event of a single fault. Loss of position should not occur from a single fault of an active component or system such as generators, thruster, switchboards, remote controlled valves etc., but may occur after failure of a static component such as cables, pipes, manual valves etc. Loss of position should not occur from any single failure including a completely burnt fire sub division or flooded watertight compartment. In the NMA Guidelines and Notes No. 28, enclosure A four classes are defined:You can help by adding to it. ( November 2018 ) For instance, if a survey ship loses its DP capability, there is normally no risk of damage or injuries. These operations will normally be done in Class 1.Depending on the risk, the operation is done in Class 2 or 3. This means at least three Position reference systems should be selected. This allows the principle of voting logic, so the failing PRS can be found. For this reason, there are also three DP control computers, three gyrocompasses, three MRU's and three wind sensors on Class 3 ships. If a single fault occurs that jeopardizes the redundancy, i.e., failing of a thruster, generator or a PRS, and this cannot be resolved immediately, the operation should be abandoned as quickly as possible.This is left to the judgment of the DP operator. For Class 2 and Class 3 a Consequence Analysis should be incorporated in the system to assist the DPO in this process.The NI issue logbooks to trainees, they accredit training centres and control the issuance of certification.This shifting landscape led to the creation of The International Dynamic Positioning Operators Association (IDPOA) in 2009. www.dpoperators.orgPrevious presidents are:This committee of dedicated volunteers delivers value to the DP community of vessel owners, operators, Marine Class Societies, engineers and regulators through an annual DP Conference, topical workshops and an extensive set of Guidance Documents covering DP Design Philosophy, DP Operations and Professional Development of DP Personnel. In addition, a growing set of unique documents called TECHOP's address specific topics of significant interest and impact. Conference papers are available for download by the public, providing the most comprehensive single source of DP industry technical papers available anywhere.The documents are free to download from the Committee's website Retrieved 2013-01-24. October 1997. Retrieved 11 October 2016. Dynamic Positioning Conference. Houston: Marine Technology Society. Retrieved 29 November 2018. Archived from the original (PDF) on 2006-03-11. Guidance for diving supervisors IMCA D 022 (Revision 1 ed.). London, UK: International Marine Contractors Association. By using this site, you agree to the Terms of Use and Privacy Policy. The systems can be operated from one single APOS station or from a wide number of APOS operator stations connected to a network. The APOS software can be integrated with Kongsberg Maritime Dynamic Positioning systems. This software is programmed on a standard Windows operating platform. Typical views are: graphical position plot, numerical data, inclination, roll, pitch and heading. One of the operator stations will be the Master. This is selected by the operator(s). This will reduce operational risk, downtime and maximise return on asset investment. Only sixteen months after the foundation of the company in 2002, the first vessel with a DP system from MT received its DP-2 notation from the American Bureau of Shipping ( ABS ). Since that time, MT has delivered more than a hundred DP systems worldwide, the majority being DP class 2. The different modules in the flow chart are described in more detail in the DP Operator Manual. DP0 has no formal approval from class. Can be upgraded to IMO Class II System by adding more modules. This software is included with all new dynamic positioning systems. It is also available as a stand-alone system. The DP Log enables the operator to log activities with the click of a button. Click here to read more.