Before you goQuestion 436 of 566

You use the one-third fuel rule. How much of your fuel do you plan to use for the trip out?

  1. One third
  2. One half
  3. Two thirds
  4. All of it
Show answer

Correct answer: One third

One third is for the trip out, one third is for the return, and one third stays as reserve.

Source: Safe Boating Guide (TP 511E, 2026), Pre-Departure Checklist, page 61

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Questions last reviewed: 18 October 2026