Cargo Tank Level Gauging: One Number, Two Paths
One number from a radar cargo tank gauge becomes a custody record on one path and an alarm on the other — while the shutdown valve answers to a sensor of its own, by rule.
Topic · 7 articles
IACS UR E26
Hold Washing: When Clean Is Defined by Contract
An engineering and authority analysis of the bulk carrier hold washing system (SYS-035) — why its completion criterion comes from the charterparty rather than a regulation, and what that changes about its cyber exposure.
Gas Bunkering: A Safety Function Across Two Hulls
The ESD link and vapour-return line of an LNG bunkering vessel bind two ships into one safety function. An engineering and authority analysis of SYS-215.
Crude Oil Washing: The System That Rules Built
An engineering and cyber analysis of the crude oil washing system — five BOM rows, four typologies, and a safety case owned by a neighbouring system.
Anti-Heeling: When One Sensor Moves Hundreds of Tonnes
A system no rule was found to require holds one of the shortest physical authority paths on a ship. A typology-level analysis of anti-heeling under the Interaction–Authority–Physical Effect model.
The Next Decade of Maritime Cyber Regulation, Read Through Five Stages of Environmental Rules
Ballast water, EEDI, CII and the EU ETS took thirty years to move from guidelines to money. Mapping that five-stage pattern onto cyber regulation after IACS UR E26/E27: fast, base and slow scenarios for retrofits, ratings and pricing, and five signals to watch each quarter.
When National Cyber Regulation Becomes a Ship Requirement — CIRCIA, the MTSA Cyber Rule, EO 14028 vs. IACS UR E26/E27
Three U.S. instruments and one class standard reach the same hull from opposite ends of its life.