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
IMCA produces a range of materials for its members as information notes, covering safety, technical, regulatory, commercial and various other issues relevant to its members.
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Information Notes
Interim Industry Transit Advice, Southern Red Sea/Gulf of Aden
The Joint Industry Security Group (JISG) of industry associations (BIMCO, the International Chamber of Shipping, CLIA, INTERCARGO, INTERTANKO, OCIMF and IMCA) have issued interim industry transit advice relating to the […]
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 […]
Cybersecurity Briefing
The International Association of Classification Societies (IACS) has recently published new unified requirements for cyber security: E26 and E27. These will be mandatory for classed ships and offshore installations contracted for construction on or after 1 January 2024. This will have implications for IMCA members.
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
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 […]
eCMID and eMISW Findings Analysis
April 2020 – April 2021 IMCA has analysed 1517 vessel inspection reports uploaded between April 2020 and April 2021 into the eCMID database at www.ecmid.com and produced the following summary […]
IMCA Security Bulletin 03/21
The Gulf of Guinea Declaration on the Suppression of Piracy Every person deserves to be safe while carrying out their work, and to be able to return to their homes […]
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 Security Committee Bulletin 02/21
For this briefing we have provided a short update on developments in Mozambique, as well as in the Gulf of Guinea, Arabian Waters, Gulf of Mexico and the Caribbean. Mozambique […]
Piracy and vessel security in the Gulf of Guinea – an update
In recent months there has been an alarming increase in levels of piracy in the Gulf of Guinea. The Security Committee would like to ensure that our members are properly […]
Fuel Consumption Data Collection
The 70th session of IMO’s Marine Environment Protection Committee (MEPC 70) adopted mandatory MARPOL Annex VI requirements for ships to record and report their fuel oil consumption, also referred to […]
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 […]
eCMID/eMISW Temporary Validity Extension Ending
Further to information note IMCA M 01/20 – Marine and DP assurance – IMCA advice during ongoing COVID-19 situation, the temporary validity extension of eCMID/eMISW inspections ends in July. IMCA […]
eCMID and eMISW findings analysis
IMCA has analysed over 2,100 vessel inspection reports uploaded into the eCMID database at www.imcaecmid.com and produced the following summary of key findings. The eCMID system enables vessel operators to […]
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