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Ship Security Alert System (SSAS) for commercial fleets

Live and test Ship Security Alerts received, recorded and distributed in the same platform your team uses for vessel tracking, so every alert arrives with the vessel’s position and can be reviewed in context. Trusted by operators including Maersk.

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80 million

Vessel position reports every single day

450K

Vessels tracked

4,500

Ports monitored

96%

BigOceanData clients renew their contracts

Trusted by leading maritime teams

An alert you can act on

Record built for inspection

BigOceanData Vessel Tracking

Keep your equipment. Change the service.

Speak with one of our SSAS specialists

How BigOceanData SSAS compares

Most providers receive an alert and forward it. Here is what else you get
Capability Typical SSAS Provider BigOceanData
Ship Security Alert Management Included Included
Immediate Live & Test Alert Handling Included Included
SOLAS and ISPS Compliance Support Included Included
Multi-channel Alert Notification Varies Included
Always-on Alert Processing Limited Included
Migration Support From Existing Provider Varies Included
Real-time Global Vessel Tracking Included
Geofencing And Smart Security Alerts Included
Historical Vessel Movement Analysis Included
Single Integrated Maritime Platform Included
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Trusted by teams who rely on maritime visibility every day

“Maersk needed the ability to track containers. After signing a two-year contract with BigOceanData in September 2016 for vessel tracking services, Maersk extended and expanded the agreement in early 2018 for a further 30 months, covering three times the original number of vessels and nearly double the number of tracked containers. Maersk continues to use the BigOceanData SSAS service, a cost-effective, well-supported solution.”

Stephan Martinussen

Head of GVPC at Maersk

“Our contract renewal with BigOceanData is a testament to the continued excellence of service and support the team provides. BigOceanData has been and will continue to be one of our key service providers at VertomCory, helping us to enhance the service package we provide to our key clients.”

Neil Flower

Agency Director

“Crisis24 is a global risk management and security services company. We commissioned BigOceanData to provide us with a custom-designed vessel tracking and risk management platform for a range of applications with our insurance, marine and offshore oil & gas clients. BigOceanData was responsive to our requirements from the outset; pioneering new ideas to create exactly what we wanted.“

Crisis24

“BigOceanData played a key role in de-risking the return of our vessel, SARBAS, from the Persian Gulf at the onset of hostilities. Their team provided excellent support over a weekend, rapidly setting up frequent Inmarsat-C position updates, seamlessly integrated with AIS data, to support a safer transit. The solution was highly cost-effective and delivered with efficiency and professionalism throughout. The team are a pleasure to work with.”

Mark Robinson

Marine Director

Latest news and insights

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We watched every large cargo Ship and Tanker in the Strait of Hormuz for 30 Days

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Which vessel tracking platform is right for your team? MarineTraffic, VesselFinder, or BigOceanData?

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Which vessel tracking platform is right for your team? MarineTraffic, VesselFinder, or BigOceanData?

“Should we use you, MarineTraffic or VesselFinder? “ It is a question we are asked directly, and it deserves a straight answer rather than a sales pitch.  The short version: if you are an individual who needs vessel positions, or a business looking for standalone AIS data feeds, VesselFinder is a sensible place to start. If you are a large organisationContinue reading “Which vessel tracking platform is right for your team? MarineTraffic, VesselFinder, or BigOceanData?”

BigOceanData launches Route Optimisation as part of its connected maritime operations platform

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BigOceanData launches Route Optimisation as part of its connected maritime operations platform

New capability combines weather-aware routing, vessel-specific logic and operational constraints to support better voyage decisions London, 21 April 2026 — BigOceanData today announced the launch of Route Optimisation, a new capability within the BigOceanData platform designed to help shipowners, operators and managers make better voyage decisions by connecting route planning with live operational visibility. BuiltContinue reading “BigOceanData launches Route Optimisation as part of its connected maritime operations platform”

BigOceanData Vessel Tracking
From Live Positions to Better Decisions: The Real Value of Vessel Tracking

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Bulgarian Shipping Company Renews  Agreement

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Bulgarian Shipping Company Renews  Agreement

A leading Bulgarian shipping company has renewed its partnership with BigOceanData following a highly successful initial term. Operating a fleet of 36 bulk carriers worldwide, the company requires reliable vessel tracking — even in regions where AIS coverage is limited. To address this, we implemented scheduled Inmarsat-C reporting alongside AIS data, ensuring continuous and accurateContinue reading “Bulgarian Shipping Company Renews  Agreement”

Diaplous Maritime Services  Agreement Renewal Strengthens Maritime Security Capabilities

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Diaplous Maritime Services  Agreement Renewal Strengthens Maritime Security Capabilities

BigOceanData’s long-running partnership with Diaplous Maritime Services has been extended, building on collaboration that began in 2020. The agreement provides core vessel tracking services and enhanced area monitoring solutions, delivering real-time intelligence on marine traffic within designated regions. The extension reflects growing demand for integrated maritime security and situational awareness, particularly as global shipping routesContinue reading “Diaplous Maritime Services  Agreement Renewal Strengthens Maritime Security Capabilities”

US-based superyacht management company renews agreement

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US-based superyacht management company renews agreement

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European Government Renews BigOceanData Fisheries VMS Contract

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European Government Renews BigOceanData Fisheries VMS Contract

BigOceanData is proud to announce that a major European Fisheries Department has extended its use of our Fisheries Vessel Monitoring System technologies and support for a 12th year!

Frequently Asked Questions

Common questions about the BigOceanData Ship Security Alert System service.

Passenger ships including high-speed passenger craft, cargo ships including high-speed cargo craft of 500 gross tonnage and upwards, and mobile offshore drilling units, under SOLAS Chapter XI-2, Regulation 6. Flag states may apply requirements beyond this baseline, so always work from the current flag state circular.

No. Unlike a distress alert, it is sent covertly to a competent authority designated by the flag state administration, and to any other recipient that administration permits. Vessels in the vicinity receive nothing, and there is no alarm onboard.

In most cases yes. BigOceanData supports all standard type-approved SSAS equipment, and existing units can usually be repointed to our service without physical replacement. Whether this applies to a particular vessel depends on the equipment, its configuration and the flag state. Our specialists will confirm before you commit.

Live and test alerts are displayed within the BigOceanData platform and distributed automatically to your nominated personnel by email, SMS, telex and on-screen notification. Using more than one channel removes the single point of failure that catches most operators out.

BigOceanData manages the transition, including notification to the flag state and receiving authority, testing, and confirmation that alerts are arriving correctly before the previous service is stood down. The aim is no gap in cover and no vessel out of service.

Testing intervals are set by the flag state administration and documented in the Ship Security Plan. Notify the receiving authority before any test so a test alert is not treated as live. Test alerts are handled and recorded by BigOceanData in the same way as live alerts.

Follow the procedure in your Ship Security Plan, which will normally require immediate notification of the receiving authority and the company security officer, with a record of the cause. The ISPS Code requires plans to include measures for limiting false alerts. BigOceanData records the activation either way, so the cause can be established afterwards.

Every alert is stored in the BigOceanData database with its timestamp and full distribution history, and can be reported on for compliance inspections, security reviews and post-incident investigation.

SSAS is one of the four core pillars of the BigOceanData platform, alongside Vessel Tracking, Route Optimisation and Maritime Intelligence. Because they share one workspace, an alert can be seen against the vessel’s live position, recent track and voyage history without moving between systems.