# Fuel consumption formula for license exam

**URL:** <https://forum.gcaptain.com/t/fuel-consumption-formula-for-license-exam/54076>\
**Category:** Professional Mariner Forum\
**Created:** [February 4, 2020, 6:09pm UTC](https://forum.gcaptain.com/t/fuel-consumption-formula-for-license-exam/54076 "2020-02-04T18:09:21Z")\
**Posts on this page:** 1\
**Showing post:** 46

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**Author:** ![Captshane](https://avatars.discourse-cdn.com/v4/letter/c/5f8ce5/32.png) [@Captshane](https://forum.gcaptain.com/u/Captshane)\
**Post date:** [February 7, 2020, 10:04pm UTC](https://forum.gcaptain.com/t/fuel-consumption-formula-for-license-exam/54076/46 "2020-02-07T22:04:30Z")

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Can someone show me in detail the equation to work this one, while steaming at 18.9 kts, your vessel consumes 386 bbls a day. In order to reduce consumption to 251 bbls per day, what is the maximum speed the vessel can turn

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