The development of mission-specific Dynamic Positioning (DP) control system modes and functionalities is crucial as DP is applied to increasingly challenging marine projects. Vendors, owners, energy companies, and class societies […]
Information Notes
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Information Notes
Non-compliance with M190 categorisation and recording of findings
It has come to the attention of the International Marine Contractors Association (IMCA) that there have been reports of non-compliance with IMCA M190 Code* of practice for developing and conducting […]
Important PRS considerations when operating close to an asset that is not rigidly fixed to the seabed
This information note reproduces item 1 of IMCA DP Bulletin 03/23 and is issued to widen distribution and awareness on this topic. From the DP Station Keeping Event reports received […]
Increasing Solar Activity and the Effect on GNSS Positioning
Global Navigation Satellite Systems (GNSS) have revolutionised the way we navigate and locate ourselves on the surface of the Earth. However, GNSS signals are prone to interference and one of the most significant sources of interference is increased ionospheric activity.
Combined Heading/Motion and Gyro Sensor Concerns
The IMCA DP Committee has been made aware of potential common-mode failures regarding Combined Gyro Compass and Motion Reference Sensors (MRU). These potential failures are discussed below and must be understood and considered while using/updating/purchasing combination MRU/Gyro, or gyro sensors that may rely on a GNSS signal to remain functional.
Field Arrival Trials
What are Field Arrival Trials? A pre-defined programme of tests and checks to be performed prior to the entry into the area of operation that are designed to confirm the […]
ASOG – The Decision Support Tool You Need
Following a review of the 2021 Annual DP Station Keeping Event Report published by IMCA in March 2022, the IMCA Marine Division Management Committee & DP Committee agreed that an objective for 2022 was to create an information note explaining the subject of Activity Specific Operating Guidelines (ASOG) and its
FMEA – Five Yearly Review
Guidance and lessons learned may be missed if the FMEA/FMECA document is not periodically refreshed. A neglected DP system FMEA/FMECA may lead to a reduction in robustness, resilience, and single fault tolerance if it is only updated after deficiencies have been identified by a vessel DP Assurance process or after
DP Consequence Analysis – A Timely Reminder
Read this Information Note for DP Consequence Analysis.
Digital Certification – New IMCA Certificate Formats
IMCA has updated the format of certificates issued under its certification schemes. This information note sets out details to help IMCA members and certificate holders recognise and understand the new […]
Verification of IMCA Certificates
IMCA has launched a new online facility for the verification of certificates issued to those working in safety-critical roles, as part of its wider digital transformation initiative. This adds to […]
Position Reference Systems – correct set-up is essential
1 BACKGROUND The IMCA Marine DP committee has identified a trend of DP station keeping events relating to the incorrect setup, use or selection of Position Reference Systems and Sensors. […]
IMCA DP Practitioner Accreditation Scheme, March 2021
Dear DP Accredited Practitioner, Welcome to this 2nd DP Accredited Practitioner news bulletin. We are well into 2021 and regrettably, there is no let up with the issues we face […]
GPS systems – Warning of interference
The United States Department of Transportation Maritime Administration (MARAD) has issued revised advisory notice 2020-016-Various-GPS Interference on multiple instances of significant GPS interference that have been reported worldwide. This interference is resulting […]
DPO Certification – The available schemes
DPO Certification – The available schemes: There are currently three organisations offering DPO certification. Each organisation states that the training scheme is in accordance with IMCA M 117 – Guidelines for the Training and Experience of Key DP Personnel. This information note provides an outline of each scheme. It does
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IMCA clarification of test requirements for DP annual trials programmes
IMCA has become aware that some vessel owner/operators are undertaking a fixed percentage of an overall trials programme per year on the basis that over 5 years the full programme […]
Marine and DP assurance – IMCA advice during ongoing COVID-19 situation
In view of the ongoing COVID-19 situation, and the extremely challenging times that many are facing, IMCA recommends the following approach to marine assurance activities, should it not be possible […]
The nautical institute dynamic positioning training executive group (NI DPTEG) minutes and action points, May 2019
These are the minutes and action points of the DPTEG meeting held in May 2019. Please direct comments or questions to Andy Goldsmith andy.goldsmith@legacy.imca-int.com. Originally issued with the following reference(s): IMCA M 02/19
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Toolbox talk prompts – CTV transfer with DP vessel
This information note was produced under the supervision of the IMCA Marine Renewable Energy Committee. Prior to a personnel transfer to or from a DP vessel, check and confirm that:Combined responsibility:Weather windows are suitable and communicated to allow transfer;Site and task risk assessments are available to cover specific risks in transferring
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