Educational articles on cathodic protection, marine growth prevention and corrosion control — the engineering principles behind the work we do. Standards are referenced by name only. Articles are published as they complete technical review.
How cathodic protection actually works — the electrochemistry behind making a structure the cathode of a corrosion cell, what a protection potential criterion means in practice, and why sacrificial anode and impressed current systems achieve the same result through different mechanisms.
Read article →A practical comparison of the two approaches to cathodic protection — current demand, structure size, design life, maintenance access and power availability all influence which is the right choice, and the two are frequently combined rather than treated as competitors.
Read article →Why alloy choice matters — aluminium's higher current capacity suits most seawater applications, zinc remains standard in specific chemistries and lower-resistivity environments, and magnesium's higher driving voltage suits buried and higher-resistivity applications where aluminium and zinc cannot deliver sufficient current.
Read article →What a reference electrode actually measures, why Ag/AgCl, Cu/CuSO4 and zinc references read differently for the same real potential, and why correct reference electrode selection and placement is what makes a potential reading meaningful in the first place.
Read article →What a close interval potential survey actually involves, how survey interval and reference electrode choice affect data quality, and how raw potential readings become a defensible assessment of protection adequacy.
Read article →The failure patterns that show up repeatedly in ICCP systems — reference electrode drift, anode calcification, cable and connection faults, and transformer rectifier issues — and why most are preventable with a realistic inspection interval rather than caught only at failure.
Read article →What makes surveying permanent marine infrastructure different from a vessel survey — soil resistivity, buried depth, tidal variation along the structure, and access constraints all shape a realistic survey and remediation plan for sheet pile and quay wall assets.
Read article →Getting the most engineering value out of a limited dry-dock window — what can and can't be assessed with the vessel afloat, and how to sequence anode replacement, coating repair and ICCP work so the CP scope doesn't become the schedule's critical path.
Read article →What keeps a marine growth prevention system performing over its service life — electrode consumption monitoring, control panel condition, and the flow-rate and water-temperature factors that affect required electrode output over time.
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