Ship Fuel Consumption Calculator

Voyage Fuel • Sea / Port Burn • Engine SFOC • Bunker Cost • CO₂e • Safety Reserve • Sensitivity

Ship Fuel Consumption Calculator

Estimate ship fuel consumption from observed daily burn or from engine power and SFOC. Calculate sea and port fuel, bunker requirement, voyage cost, CO₂e, annual spend and stress exposure. Advanced mode separates laden, ballast, auxiliaries, port working and waiting demand.

↑

Need SFOC, main-engine load, auxiliaries, separate laden/ballast legs or stress cases? Click Advanced above.Simple uses an entered average sea burn and keeps reserve fuel separate from modeled consumption.

Voyage & Fuel

Voyage distancenm

Average sea speedkn

Average sea fuel burnMT/day including normal sea auxiliaries.

Port / idle timedays

Port / idle fuel burnMT/day

Bunker priceUSD/MT

CO₂ factortCO₂/MT fuel, editable planning value.

Safety fuel reserve% added to bunker requirement only.

Carbon priceUSD/tCO₂, optional.

Similar voyages per year

Calculation Basis

Sea-consumption basis

Average currentkn, favorable positive.

Route / deviation allowance%

Weather / sea consumption margin%

Other consumption margin% applied after sea + port build-up.

Safety fuel reserve% added only to bunker requirement.

Sea Passage

Laden distancenm

Laden speed through waterkn

Laden propulsion burnMT/day when using observed basis.

Ballast distancenm

Ballast speed through waterkn

Ballast propulsion burnMT/day when using observed basis.

Engine / SFOC Basis

Main engine MCRkW

Laden engine load% MCR

Ballast engine load% MCR

Main engine SFOCg/kWh

Sea auxiliary electrical loadkW average

Auxiliary engine SFOCg/kWh

Port & Waiting

Port working days

Port working burnMT/day observed basis.

Port working electrical loadkW engine basis.

Waiting / idle days

Waiting / idle burnMT/day observed basis.

Waiting electrical loadkW engine basis.

Fuel, Cost & Emissions

Sea fuel priceUSD/MT

Sea fuel CO₂ factortCO₂/MT

Port fuel priceUSD/MT

Port fuel CO₂ factortCO₂/MT

Carbon priceUSD/tCO₂

Carbon-cost exposure%

Similar voyages per year

Other annual fuel-related costUSD/year

Stress Scenario Register

Stress voyage consumption without changing the base case. Labels are categorical; no vessel or route identifiers are needed.

Use	Scenario	Sea burn Δ%	Current Δ kn	Extra port days	Bunker price Δ%

Consumption Data Checks

Sea consumption basis verifiedNoon-report, performance trial or engine/SFOC basis reconciled. Speed and current basis alignedThrough-water and over-ground assumptions are not mixed. Auxiliary demand includedSea auxiliaries and port loads are represented. Port / waiting profile reviewedWorking and idle consumption reflect the expected call. Fuel prices and CO₂ factors currentCommercial and emissions assumptions match the intended planning basis. Reserve policy confirmedReserve is a bunker-order allowance, not modeled consumed fuel.

Planning limitation: actual ship fuel consumption changes with loading condition, trim, weather, sea state, current, hull and propeller condition, machinery condition, fuel quality, auxiliary demand and operational practice. Engine/SFOC mode is an engineering estimate and should be replaced by vessel-specific performance data whenever available.

Method: Simple sea time = distance ÷ speed ÷ 24. Advanced mode calculates laden and ballast time separately using speed over ground = through-water speed + average current. Observed-burn mode uses entered daily propulsion/port burn. Engine/SFOC mode estimates fuel as power × load × SFOC × operating hours. Reserve is added to bunker requirement only and is not counted as consumed fuel or emissions. CO₂ factors are editable planning values and should match the contractual or regulatory basis used for the actual decision.

Generated by ShipUniverse.com

By the ShipUniverse Editorial Team — About Us | Contact