Written by a real Senior ETO · 15+ years · high voltage
Pass your ETO and High Voltage exam — no guesswork.
Curated study guide + PRO quiz with explanations for every wrong answer, in English. Written by a Senior ETO with 15+ years on HV systems — covering what generic scripts and courses consistently miss.
Instant access · in English · unlimited quiz use
ETO and high voltage is where most candidates fail — and it’s no surprise
Outdated study materials. Pirated PDFs of unknown origin circulate among seafarers — and one wrong or outdated answer in an oral exam can cost you a fail.
Generic content. Machine-translated guides and general courses rarely cover shipboard HV systems the way you actually need for your certificate of competency exam and watchkeeping duties.
No knowledge check. You read and hope for the best. Without a quiz with explanations, you don’t know what you actually know until it’s too late.
What you get
✓ Curated study guide — up to date, written from real onboard experience, not machine-translated.
✓ PRO quiz with explanation for every wrong answer — unlimited use, question bank continuously expanded.
✓ Covers ETO and high voltage — from automation and control systems to HV switchgear and safety procedures.
✓ Instant access — available immediately after purchase, on mobile and desktop.
What’s inside
ETO
Automation and control systems
Shipboard machinery and propulsion
Navigation and electrical systems
General knowledge and fundamentals
High Voltage
High voltage fundamentals
HV switchgear and switchboards
Safety procedures and permit to work
Incidents and emergency response
Not marketing — written by a seafarer who’s been there
I’ve spent 15+ years as a Senior ETO on container vessels, working high-voltage systems. I built these materials because candidates were failing due to outdated scripts — and nobody was covering HV content properly. Everything here is curated, current and verifiable through the quiz.
— Tihomir, Senior ETO
Frequently asked questions
What exactly do I get?
A study guide (PDF) + online PRO quiz covering ETO and high voltage. Access is instant after purchase.
Is this for cadets or experienced officers?
Both — whether you’re sitting your ETO/HV exam for the first time or an experienced officer refreshing your knowledge before revalidation.
What language is it in?
In English — written for the international seafarer market.
Can I try before I buy?
Yes — take the free demo quiz and see exactly what the questions look like before you commit to anything.
Ready for your ETO and High Voltage exam?
Study guide + PRO quiz with explanations. Instant access, in English, from a real Senior ETO.
Not sure yet? Try the free demo quiz before you buy.