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Consult Admiralty Sailing Directions (NP44), Ocean Passages for the World, and ATT Volume 5.
. While the full proprietary guide is typically a paid resource, several related official summaries and planning resources are available as PDFs or digital references. Latest Official Guide (Witherbys) The most recent edition is the PPG - SOMS 2026-27 Edition , published in February 2026. Maryland Nautical Key Features : Includes updated guidance on high-vigilance areas, Straits Pilot Services Vessel Traffic Services (VTS) information, and Traffic Separation Schemes (TSS) New Content
This guide is universally recognized as the definitive handbook for shipmasters and navigating officers transiting the SOMS. It has been developed with direct input from regional authorities, including the Maritime and Port Authority of Singapore (MPA), and the pilotage services of Indonesia and Malaysia. The latest editions, such as the 2025-2026 or 2026-2027 versions, represent fully revised and updated compendiums of best practices, legal requirements, and practical navigational tips. passage planning guide malacca and singapore straits pdf
The SOMS features several severe geographical constraints that limit maneuverability:
Vessels crossing the TSS should display in a vertical line at night. Anchoring Latest Official Guide (Witherbys) The most recent edition
The 2026-27 guide highlights specific zones where risk is highest due to crossing traffic or narrow lanes. Precautionary Areas : Locations such as the Western Boarding Ground ‘A’
Guidance on local weather (such as haze), strong tidal streams, and current diagrams. Navigation Rules & Safety Measures Standard guides cite specific IMO and local regulations: The latest editions, such as the 2025-2026 or
Volume 5, covering Singapore Strait ports and secondary stations to calculate exact under-keel clearance.
Marks the eastern gateway of the Singapore Strait, where vessels transition to or from the South China Sea. Deep Water Routes (DWR)
Deep-draught vessels typically require a minimum UKC of 3.5 meters.
The Mandatory Ship Reporting System () is jointly operated by Malaysia and Singapore. It divides the straits into nine reporting sectors. All transiting vessels must report to the respective Vessel Traffic Services (VTS) when entering a sector.
