USCG-ENG-UNL-L1.4

Propulsion mode — the one-third rule

USCG-ENG-UNL-M1 · Third Assistant Engineer · USCG-ENG-UNL-M1-A Seven ways in, and the only exam that really gates you

The horsepower formula decides how big a plant you may run. The mode rule decides **what kind** of plant. They are separate constraints and they bite separately.

AI-drafted catalogue content pending SME review. Sea service and examination requirements change; verify with the National Maritime Center before relying on this for a career decision.