HomeShip ScienceSpecialised, ro-ro & passenger typesCalculatorsFlotel / Accommodation Unit Fuel & CO₂Flotel / Accommodation Unit Fuel & CO₂Accommodation and support units hosting offshore crews during platform campaigns. CII-exempt; daily fuel-per-POB (person on board) benchmark.Ship typeOffshoreFlotelOperational yearAverage POB (persons on board)–250–500 pax during platform campaigns.Operating daysdFuelFuelHeavy Fuel Oil (HFO / RME..RMK)Very Low Sulfur Fuel Oil (VLSFO, ≤0.50% S)Ultra Low Sulfur Fuel Oil (ULSFO, ≤0.10% S)Light Fuel Oil (LFO / RMA..RMD)Marine Gas Oil (MGO / DMA, DMZ)Marine Diesel Oil (MDO / DMB)LNG - Otto cycle, medium-speed (4-stroke dual-fuel)LNG - Otto cycle, slow-speed (2-stroke low-pressure)LNG - Diesel cycle, slow-speed (2-stroke high-pressure)LNG - lean-burn spark-ignited (LBSI)LPG - PropaneLPG - ButaneMethanol - grey (natural-gas feedstock)Bio-methanole-Methanol (RFNBO from renewable H2 + captured CO2)Ammonia - grey (steam-methane reforming)Ammonia - blue (SMR + CCS)Ammonia - green (electrolytic, renewable)Hydrogen - grey (SMR)Hydrogen - green (renewable electrolysis)Bio-LNG - Otto cycle, medium-speedBio-LNG - Otto cycle, slow-speedBio-LNG - Diesel cycle, slow-speedBio-LNG - lean-burn spark-ignitedFAME biodiesel (B100, waste feedstock)HVO / Renewable Diesel (waste feedstock)Masst×+ Add fuelAnnual CO₂13,465.2tDaily fuel15.00t/dayCO₂ per person-day120.225kg / POB-dayChanging the inputs requires JavaScript. The calculator above shows its default inputs and result. The formula, symbols, and regulatory sources are shown in the Formula section below.Formula, assumptions, and limitsCO2year=∑jFj⋅Cf,j\text{CO}_2^\text{year} = \sum_j F_j \cdot C_{f,j}CO2year=j∑Fj⋅Cf,jSymbolMeaningUnitFjF_jFjMass of fuel jjjtCf,jC_{f,j}Cf,jCO₂ factort CO₂ / t fuelBench(AveragePOB(personsonboard))Bench (Average POB (persons on board))Bench(AveragePOB(personsonboard))operational benchmarkdopd_\text{op}dopOperating daysdSource: IMCA - Accommodation unit benchmarking; IMO MEPC.364(79) - Cf conversion factorsIn shortAccommodation and support units hosting offshore crews during platform campaigns.Learn the theory Specialised Ship Types: Ro-ro, Reefer, Heavy-Lift →