While steaming at 15 knots, your vessel...

Question 1 / 2707066636eea28f7522a1c51b613

Question 1 of 2707066636eea28f7522a1c51b613

While steaming at 15 knots, your vessel burns 326 bbls of fuel per day. What will be the rate of fuel consumption if you decrease speed to 12.2 knots?

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Question 1 of 27070

While steaming at 15 knots, your vessel burns 326 bbls of fuel per day. What will be the rate of fuel consumption if you decrease speed to 12.2 knots?

🔍 Key Concepts

• Relationship between speed and fuel consumption (fuel usually changes with roughly the cube of speed for displacement hulls) • Set up a proportion or power relationship between the two speeds (15 knots and 12.2 knots) • Careful unit consistency: keep fuel in bbl/day and speed in knots

💭 Think About

• How does fuel consumption typically change when speed is reduced on a displacement vessel: directly with speed, with speed squared, or with speed cubed? • If you know the fuel burn at 15 knots, how can you scale that to find the burn at 12.2 knots using the same speed–fuel relationship? • Once you compute the new theoretical burn, which option is closest to your calculated value?

✅ Before You Answer

• Be sure you apply the same relationship (e.g., proportional to speed³) to both speeds, not just linearly • Double-check your exponent and calculator steps; a small mistake in the power will give a very different answer • After calculating, verify that the new fuel rate is lower than 326 bbl/day but still reasonable for only a small reduction in speed

Question 1 of 27070

While steaming at 15 knots, your vessel burns 326 bbls of fuel per day. What will be the rate of fuel consumption if you decrease speed to 12.2 knots?

175 bbls

300 bbls

215 bbls

277 bbls