Choose an ETO topic below. Each entry opens its own articles, tools and troubleshooting pages
inside the ETO & Electrical section.
- Cabling, Glanding, Earthing/Bonding & EMC
- Lighting, Navigation & Comms Power
- Automation, Instrumentation & Control
- Fire/Gas Detection & Hazardous Areas
- Auxiliary Systems
- Specialized: Rigs, DP Plants & Megayachts
- Maintenance, Testing & CMMS
- Documentation, Drawings & Compliance
- Checklists, SOPs & Test Records
- Calculators & Tools
ETO & Electrical Systems Hub
High-voltage, low-voltage, automation and power management in one structured space.
Use the left-hand ETO Menu to move between topics without leaving the section.
What are you dealing with electrically today?
📘 Build foundations
New to shipboard power or refreshing for HV endorsement and orals?
🚨 Solve a fault
Dealing with trips, blackouts, alarms or strange readings on PMS / protection?
📊 Use tools & test sheets
Need a test record, protection setting sheet, cable sizing or harmonic check quickly?
Everything from generators to automation mapped by system
1) Fundamentals, safety & distribution
Core shipboard electrical theory, safe HV/LV work and how power flows from generators,
through switchboards and down to final circuits.
Protection settings, test sheets and sizing tools
🛡 Protection & coordination
Relay settings, fault level estimates, discrimination checks and trip test records.
🔌 Cables, motors & ESS
Basic cable sizing, motor starting checks, battery/ESS logs and harmonics snapshots.
Fresh articles, guides and incident reports
Study corner for future ETOs
🎓 ETO syllabus & pathways
From basic AC/DC through HV and automation to full ETO ticket and endorsements.
🧪 Oral questions & case studies
Scenario-based questions on blackouts, shore power trips, ESS faults and DP powerplants.
Most helpful this week
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Blackout & black-start playbook
Step-by-step guide with example PMS screenshots and relay check notes.
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ETO test sheet bundle – HV/LV
Printable and editable test records for insulation resistance, relay tests and UPS checks.
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Cable, breaker & motor reference crib sheet
“At-a-glance” table of typical ratings, trip curves and starting methods used at sea.
Main switchboard and MCC panels with PMS, metering and protection relays in service.