Thanks, guys. I shall summarize to be sure I understand.
Range and endurance are different. Noted.
Range is greater at 3kts than at 8kts, but it takes longer to get there. Thus the 8-9kts recommendation is balanced, taking into account fuel usage and travel time. If one is solely concerned with maximum range (getting home on low fuel e.g.), then one should run at very low speeds.
Do I understand it correctly?
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