Dry Bulk Cargo Hold Cleaning Time, Water & Cost Tool

Ship Universe Dry Bulk Operations Tool

Dry Bulk Cargo Hold Cleaning Time, Water & Cost Tool

Estimate hold-cleaning duration, wash-water demand, chemical use, wastewater, sludge, heating energy, labor, equipment cost and vessel-time exposure. Advanced mode models different holds, cleaning difficulty, residue loading, machine allocation, crew allocation and concurrent cleaning waves.

Currency

Currency selector changes display only. No exchange-rate conversion is performed.

Cleaning Schedule Machine wash time, manual detailing, setup, inspection, drying and concurrent hold waves

Water & Waste Wash water, chemical dose, recovered wastewater, residue/sludge and optional water heating

Cost Exposure Labor, equipment, water, chemicals, disposal, energy and vessel-time cost

Vessel & Hold Configuration

Simple mode assumes similar holds and calculates the number of cleaning waves from the entered simultaneous hold capacity.

Number of cargo holds

holds

Average cleanable surface area per hold

m²/hold

Cleaning difficulty factor A user-adjustable productivity multiplier, not a cargo-acceptance rating.

Estimated removable residue loading

kg/m²

Holds cleaned simultaneously

holds/wave

Cleaning Productivity

Wash machines assigned per active hold

machines/hold

Surface cleaning productivity per machine

m²/machine-h

Wash-water flow per machine

m³/machine-h

Crew assigned per active hold

people/hold

Manual detailing labor

labor-h / 1,000 m²

Setup / repositioning time per hold

hours

Final inspection / touch-up time

hours/hold

Drying / ventilation allowance

hours/wave

Water, Chemicals & Waste

Wash-water unit cost

$ /m³

Chemical dose

L/m³ water

Chemical cost

$ /L

Wastewater recovery / disposal share

Wastewater handling / disposal cost

$ /m³

Residue / sludge recovery share

Solid residue / sludge disposal cost

$ /tonne

Optional Wash-Water Heating

Share of wash water heated

Water temperature increase

°C

Heating-system efficiency

Heating energy cost

$ /MWh thermal input

Labor, Equipment & Vessel Time

Labor rate

$ /person-hour

Cleaning machine operating cost

$ /machine-hour

Fixed contractor / mobilization cost

Vessel time value

$ /hour

Individual Cargo Holds

Use the same wave number for holds cleaned in parallel. The model sums the longest hold duration in each wave to estimate the total cleaning schedule.

Hold	Area m²	Difficulty ×	Residue kg/m²	Machines	Crew	Wave

Shared Cleaning Productivity

Surface cleaning productivity per machine

m²/machine-h

Wash-water flow per machine

m³/machine-h

Manual detailing labor

labor-h / 1,000 m²

Setup / repositioning time per hold

hours

Final inspection / touch-up time per hold

hours/hold

Drying / ventilation allowance per wave

hours/wave

Water, Chemicals & Waste

Wash-water unit cost

$ /m³

Chemical dose

L/m³ water

Chemical cost

$ /L

Wastewater recovery / disposal share

Wastewater handling / disposal cost

$ /m³

Residue / sludge recovery share

Solid residue / sludge disposal cost

$ /tonne

Heating, Labor & Economics

Share of wash water heated

Water temperature increase

°C

Heating-system efficiency

Heating energy cost

$ /MWh thermal input

Labor rate

$ /person-hour

Cleaning machine operating cost

$ /machine-hour

Fixed contractor / mobilization cost

Vessel time value

$ /hour

Hold Cleaning Results

Similar-hold cleaning estimate

Enter cleaning data

Enter hold geometry, cleaning productivity, water, waste and cost assumptions to estimate schedule, resource use and cleaning exposure.

Estimated Cleaning Schedule

N/A

Machine washing, detailing, setup, inspection and drying across modeled cleaning waves

Total Economic Exposure

N/A

Direct cleaning cost plus entered vessel-time value

Direct Cleaning Cost

N/A

Vessel-Time Cost

N/A

Total Wash Water

N/A

Water per Surface Area

N/A

Chemical Requirement

N/A

Recovered Wastewater

N/A

Recovered Residue / Sludge

N/A

Heating Energy Input

N/A

Machine Hours

N/A

Crew Labor Hours

N/A

Cleaning Waves

N/A

Bottleneck Hold

N/A

Average Cost per Hold

N/A

Direct Cost per m²

N/A

Water Disposal Cost

N/A

Cleaning Intensity Index

N/A

Hold-by-Hold Cleaning Results Advanced mode

Hold	Wave	Area	Difficulty	Machine Hrs	Water	Labor Hrs	Elapsed Hrs	Residue

Schedule & Resource Summary

Water, Chemical & Waste Summary

Cleaning Cost Breakdown

Schedule Sensitivity Cleaning difficulty vs machine productivity

Difficulty \ Productivity	-15%	Base	+15%

Model approach: required machine-hours equal cleanable surface area × cleaning difficulty divided by entered machine productivity. Wash-water demand equals machine-hours × machine water flow. Manual detailing labor scales with area and difficulty. Hold elapsed time combines machine washing, crew detailing, setup and inspection. Holds sharing a wave are treated as concurrent, with wave duration set by the longest hold plus the entered drying allowance. Direct cost includes water, chemicals, wastewater, residue disposal, heating energy, labor, machine operation and fixed cost. Vessel-time exposure is schedule hours × entered vessel-time value.

Planning estimate only. Hold-cleaning requirements vary materially by previous cargo, next cargo, charter-party or receiver standards, coatings, corrosion, staining, residue adhesion, hold geometry, access, sea state, weather, water availability, equipment condition and inspection criteria. This tool does not determine whether a hold is cargo-ready, safe for entry or acceptable to a charterer, terminal, surveyor or receiver. It does not provide confined-space entry instructions, chemical handling procedures, discharge permissions or pollution-control authorization. Actual work must follow the vessel SMS, approved risk assessments, product safety information, competent-person instructions, environmental requirements and applicable port, flag, class and company procedures. Use actual atmosphere testing and approved inspections rather than calculator estimates for safety or cargo acceptance decisions.

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