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Notes from the bridge and the workshop

Practical thinking on maritime technology, security, and navigation — drawn from real fleet deployments and the engineering behind them.

Featured·Navigation

GPS Jamming in the Baltic: What Ships Are Facing in 2026

Jamming and spoofing are now the background condition in the eastern Baltic. What they look like from the bridge, where they hit hardest, and what crews can do about it.

Published

Oct 2026

Read time

6 min read

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Latest writing

Field notes, engineering deep-dives, and product thinking from the Decorum team.

Security

Malware on the Bridge: What It Means for ECDIS Chart Security

A remote access trojan was found on a ferry’s onboard systems and a crew member has been charged with planting it. How it got there has never been made public — which is exactly why the routes you already know about deserve attention.

Sep 20267 min read

Navigation

What Is AVCS in ECDIS? AVCS, ARCS, AIO & ADC Explained

AVCS, ARCS, AIO, ADC — four Admiralty services, four different jobs. A practical guide to what each one does, how they relate to SOLAS compliance, and what S-100 means for your bridge routine.

Jun 202610 min read

Security

Goodbye USB Sticks: The Safer Future of ECDIS Chart Updates

USB sticks, manual downloads, and unverified transfers are still the norm for ECDIS chart updates on most vessels. Here is what a secure, automated alternative actually looks like.

Jun 20267 min read

Technology

The IT Challenge in Maritime Compliance: How EU MRV is Reshaping the Industry

Manual record-keeping and fragmented systems cannot satisfy EU MRV, IMO DCS, and EU ETS simultaneously. Here is how software, AI, and automation are stepping in.

Jun 20267 min read

Fleet Operations

CO₂ Compliance in Maritime: A Step-by-Step Guide for EU MRV & IMO DCS

EU MRV and IMO DCS set out exactly what you must do and when. This step-by-step guide walks through every stage — from Monitoring Plan to Document of Compliance.

Jun 20269 min read

Fleet Operations

How CO₂ Reporting Can Save Shipping Companies Millions

Compliance with EU MRV, UK MRV, and IMO DCS is unavoidable. The companies winning are the ones turning that obligation into an operational advantage.

Jun 20268 min read

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