Estimate total voyage cost, fuel consumption, and freight rate per ton. Includes speed optimization analysis showing how small speed changes impact total cost.
Deadweight tonnage
Main engine MCR
Nautical miles
Suez, Panama, etc. 0 if none
Voyage Duration
14.9 days
Total Fuel
594.6 mt
40 mt/day
Total Voyage Cost
$451,786
Fuel: $356,786 + Port/Canal: $95,000
Freight Cost / Ton
$10.04
Cargo: 45,000 mt (90% DWT)
| Speed (kn) | Duration (days) | Fuel (mt) | Total Cost | $/ton | vs. Base |
|---|---|---|---|---|---|
| 12 kn (-2) | 17.4 | 693.8 | $511,250 | $11.36 | +$59,464 |
| 13 kn (-1) | 16 | 640.4 | $479,231 | $10.65 | +$27,445 |
| 14 kn (base) | 14.9 | 594.6 | $451,786 | $10.04 | --- |
| 15 kn (+1) | 13.9 | 555 | $428,000 | $9.51 | $-23,786 |
| 16 kn (+2) | 13 | 520.3 | $407,188 | $9.05 | $-44,598 |
Note: This simplified model uses a linear fuel-speed relationship. In practice, fuel consumption scales roughly with the cube of speed, meaning actual savings from speed reduction are typically greater than shown here.
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Fuel typically accounts for 50-70% of voyage costs. The cubic relationship between speed and fuel consumption means that even a 1-2 knot reduction can yield 15-25% fuel savings, making slow-steaming a powerful cost lever.
| Fuel Type | Price Range ($/mt) | Notes |
|---|---|---|
| VLSFO (0.5% S) | $500 – $700 | IMO 2020 compliant |
| MGO (0.1% S) | $700 – $950 | Required in ECAs |
| LNG | $600 – $1,000 | Volatile, dual-fuel vessels |