REG-MAN-L3.3

ETOs, High Voltage and Unusual Machinery

REG-MAN-M3 · The Engine Room · REG-MAN-M3-A Engineer grades, the single-engine versus combined-power rule, and ETO, high-voltage and special-machinery expectations.

No flag makes an ETO mandatory by rule, but **every ETO carried at 750 kW and over needs a III/6 CoC**, and Cayman expects the manning assessment to put one on any high-voltage yacht.

Independent study. xplor is not affiliated with the Red Ensign Group or any of its registries and awards no certificate, endorsement or Certificate of Competency. A yacht's manning is set by the Minimum Safe Manning Document its flag issues, which always takes precedence over the general scales discussed here. AI-drafted content pending subject-matter-expert review.