Ship Universe Maritime Tool
Just-in-Time Arrival Fuel & Waiting Cost Optimizer
Compare sailing at the current planned speed and arriving early to wait with slowing down for a berth-ready time. Estimate the required JIT speed, sailing and anchorage fuel, waiting hours, bunker savings, carbon value and total voyage savings.
Remaining Voyage & Berth Time
Enter the remaining distance and the expected number of hours until the berth is ready.
nautical miles
knots
hours
hours early
knots
The optimizer will not recommend a speed below this input.
Sea & Anchorage Fuel
MT/day
%
This portion is not reduced by the speed-fuel curve.
MT/day
$
/MT
Waiting Cost & Optional Carbon Value
$
/waiting day
Optional. Can represent hire, operating or opportunity exposure not already counted elsewhere.
$
tCO2/MT fuel
$
/tCO2
%
$
Voyage Timing
Advanced mode separates speed-sensitive propulsion fuel from fixed sea auxiliary consumption and adds carbon, waiting and coordination costs explicitly.
nautical miles
knots
hours
hours early
knots
%
Adds a second lower-speed constraint to the optimizer.
Detailed Fuel Model
MT/day
MT/day
MT/day
$
/MT
Waiting & Carbon Economics
$
/waiting day
$
tCO2/MT fuel
Example default only. Replace with the factor appropriate for the fuel and accounting method used.
$
/tCO2
%
$
Just-in-Time Arrival Results
Simple berth-ready optimization
Enter voyage data
Enter remaining distance, planned speed and berth-ready time
to compare the current arrival plan with a Just-in-Time arrival.
Planning estimate only.
Actual safe and economical speed depends on vessel condition,
engine operating limits, charterparty obligations, weather,
currents, traffic, under-keel clearance, navigational constraints,
pilotage, port instructions, berth certainty, cargo requirements
and machinery efficiency. The speed-fuel relationship in this tool
is a simplified planning model and should be replaced by
vessel-specific performance data where available. Do not use this
tool as navigational or engine-operating advice.
Results copied