The IMO sub-committee on navigation, communications, search and rescue (NCSR 13)
NCSR 13 Advances Maritime Digitalization and Safety Standards
The 13th session of the International Maritime Organization’s (IMO) Sub-Committee on Navigation, Communications, Search and Rescue (NCSR 13) took place from 22 to 26 June 2026. During this session, NCSR 13 made significant progress in advancing maritime digitalization and enhancing safety standards. Here are the key highlights from the session:
Finalized Guidance for ECDIS S-100 Implementation
NCSR 13 finalized draft guidance to support the introduction of next-generation Electronic Chart Display and Information Systems (ECDIS S-100). This guidance aims to enhance navigational capabilities and improve safety at sea.
Transition Scheme for Digital VHF Voice Communications
A transition scheme from analogue to digital VHF voice communications was agreed upon during NCSR 13. This scheme includes a stepwise shift towards digital channels while maintaining existing analogue channels for safety purposes.
Updated Road Map for NAVDAT Implementation
The session also saw an update to the road map for the implementation of NAVDAT, a digital broadcasting framework for maritime safety and search and rescue information. This update outlines a gradual approach to the development, testing, and standardization of NAVDAT.
Draft IMO Positions for WRC-27
NCSR 13 agreed on draft IMO positions regarding the World Radio Conference 2027 agenda items related to maritime services. These positions aim to ensure that regulatory changes do not hinder the Global Maritime Distress and Safety System (GMDSS) and other safety-critical communications.
Guidelines for EPIRBs with Two-Way Communication
Draft amendments were agreed upon for float-free Emergency Position-Indicating Radio Beacons (EPIRBs) operating on 406 MHz. These amendments introduce the use of two-way communication via the Galileo Return Link as an optional functionality.
Development of ECDIS S-100 Data Connectivity Framework
Progress was made in developing a regulatory framework to support the safe implementation of ECDIS S-100. This system aims to enhance navigation safety by providing real-time electronic chart display combined with updated digital information.
Performance Standards for Radionavigation Receivers
NCSR 13 worked on establishing performance standards for augmentation systems in radionavigation receivers to improve precision and reliability. Additionally, draft standards for shipborne R-mode receiver equipment were finalized to ensure safe navigation independent of GNSS.
Transition Scheme for Digital VHF Voice Communications
A transition scheme was agreed upon for the gradual shift from analogue to digital VHF voice communications. The scheme includes a timeline for the development of regulatory frameworks, standards, and equipment replacement.
LRIT Policy Update
NCSR 13 noted the approval of draft amendments to SOLAS Regulation V/19-1 regarding Long-Range Identification and Tracking (LRIT) of ships. These amendments aim to introduce a free-of-charge policy for providing LRIT information to entitled coastal states.
Recommendations and Next Steps
As decisions made at NCSR 13 are subject to further approval by the Maritime Safety Committee (MSC), monitoring the outcomes of MSC 112 in December 2026 is crucial. DNV class customers are advised to stay informed about upcoming statutory requirements that may impact their ships.
In conclusion, NCSR 13 made significant strides in advancing maritime digitalization and safety standards, setting the stage for a safer and more efficient maritime industry.
