TY - GEN N2 - The requirement to maintain and uplift fuel in naval vessels is a necessary operating constraint and, with<br> projections forecasting that fuel oil prices will continue to rise, uplifts need to be scheduled to deconflict with<br> military tasking whilst being financially efficient. This paper presents mission fuel management as an optimisation<br> problem, where analytical techniques are used to explore the impact of intelligent uplifts, intelligent leg<br> speeds and the impact of minimum fuel holding restrictions and hull bio-fouling. Using a representative transit,<br> we demonstrate that relative fuel price differences between ports may be exploited to achieve mission fuel<br> cost savings of 15% to 25%, without impacting mission dates. For time constrained transits, being those with leg<br> speeds limited by the minimum fuel holding restriction, a saving of 4% to 5% is achievable by varying leg speeds.<br> Finally, we conclude that challenging minimum fuel holding requirements can yield up to 5% saving, whilst hull<br> bio-fouling has an almost negligible effect in our model (due to the short time at sea). Extrapolation indicates<br> that whilst fuel consumption will invariably increase for a given speed, it does not affect the fuel uplift decision<br> making. AB - The requirement to maintain and uplift fuel in naval vessels is a necessary operating constraint and, with<br> projections forecasting that fuel oil prices will continue to rise, uplifts need to be scheduled to deconflict with<br> military tasking whilst being financially efficient. This paper presents mission fuel management as an optimisation<br> problem, where analytical techniques are used to explore the impact of intelligent uplifts, intelligent leg<br> speeds and the impact of minimum fuel holding restrictions and hull bio-fouling. Using a representative transit,<br> we demonstrate that relative fuel price differences between ports may be exploited to achieve mission fuel<br> cost savings of 15% to 25%, without impacting mission dates. For time constrained transits, being those with leg<br> speeds limited by the minimum fuel holding restriction, a saving of 4% to 5% is achievable by varying leg speeds.<br> Finally, we conclude that challenging minimum fuel holding requirements can yield up to 5% saving, whilst hull<br> bio-fouling has an almost negligible effect in our model (due to the short time at sea). Extrapolation indicates<br> that whilst fuel consumption will invariably increase for a given speed, it does not affect the fuel uplift decision<br> making. AD - RINA, UK AD - RINA, UK AD - RINA, UK AD - RINA, UK T1 - Naval Vessel Mission Fuel Expenditure Optimisation DA - 2020-02-03 AU - Fox, TE AU - Minty, D AU - O'Keefe, SM AU - Taylor, JG L1 - https://library.imarest.org/record/7698/files/INEC_2020_Paper_92.pdf JF - Conference Proceedings of INEC VL - INEC 2020 PY - 2020-02-03 ID - 7698 L4 - https://library.imarest.org/record/7698/files/INEC_2020_Paper_92.pdf KW - Fuel consumption KW - Fuel efficiency KW - Fuel savings KW - Operational effectiveness TI - Naval Vessel Mission Fuel Expenditure Optimisation Y1 - 2020-02-03 L2 - https://library.imarest.org/record/7698/files/INEC_2020_Paper_92.pdf LK - https://www.imarest.org/events/inec-2020 LK - https://library.imarest.org/record/7698/files/INEC_2020_Paper_92.pdf UR - https://www.imarest.org/events/inec-2020 UR - https://library.imarest.org/record/7698/files/INEC_2020_Paper_92.pdf ER -