While steaming at 15.0 knots, your vessel consumes 326 barrels of fuel oil per day. In order to reduce consumption to 178 barrels of fuel oil per day, what is the maximum speed the vessel can turn for?
Official USCG Answer & Rule Citation
Correct Answer: Option C — 12.2 knots
Rearranging Bowditch's cubic speed and fuel formula: New Speed = Old Speed × cube root(New Fuel / Old Fuel). Solving 15.0 × cube root(178 / 326) gives 12.2 knots.
100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.