Stowage Factor & Full-and-Down Tool Cargo Volume, Weight & Hold Capacity

Stowage Factor • Grain Capacity • Bale Capacity • Broken Stowage • Cargo DWT • Full & Down • Two-Cargo Mix • Hold Capacity • Revenue Optimization

Stowage Factor & Full-and-Down Tool Cargo Volume, Weight & Hold Capacity

Calculate cargo stowage factor relationships, determine whether a cargo is space-limited or deadweight-limited, find maximum cargo intake, and solve two-cargo Full-and-Down combinations. Simple mode answers the single-cargo intake question quickly. Advanced adds grain/bale capacity, a hold register, cargo-specific broken stowage, exact two-cargo Full-and-Down mathematics, cargo-availability constraints, revenue or tonnage optimization, sensitivity analysis and unused cube/deadweight diagnostics.

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Need a true Full-and-Down cargo mix? Click Advanced above.Advanced solves the exact heavy/light cargo combination, applies cargo-specific broken stowage, can sum grain/bale capacity by hold, and calculates the best feasible mix when cargo availability prevents the exact mathematical solution.

Fast7 primary inputs

Core answerMax intake + limiting factor

Key diagnosticRequired Full-and-Down SF

Fast Cargo Intake Screen

Broken stowage is treated as unusable hold space. The tool calculates usable volume = gross cargo-space volume × (1 − broken stowage %).

Capacity basis

Cargo-space capacitym³.

Available cargo deadweightmetric tonnes.

Cargo stowage factorm³/MT.

Broken stowage allowance% of cargo-space volume treated as unavailable.

Planned cargo weightmetric tonnes.

Freight / revenue contributionUSD per metric tonne, optional commercial screen.

Vessel Cargo Capacity

Capacity source

Capacity basis

Direct total cargo-space capacitym³.

Available cargo deadweightmetric tonnes after bunkers, stores, FW and other non-cargo weights.

Optimization objective

Reserve cargo-space allowance% removed from selected grain/bale capacity before cargo allocation.

Hold Register

Used only when “Sum hold register” is selected. Enter grain and bale cubic for each hold. Optional hold weight limits are aggregated only when every entered hold has a positive weight limit.

Hold	Grain capacity	Bale capacity	Max cargo weight

Two-Cargo Full-and-Down Solver

For mixed cargoes, broken stowage is converted into an effective space demand: effective SF = stated SF ÷ (1 − broken stowage). This avoids double-counting the same lost space.

Cargo A stowage factorm³/MT.

Cargo B stowage factorm³/MT.

Cargo A broken stowage%

Cargo B broken stowage%

Cargo A available quantitymetric tonnes.

Cargo B available quantitymetric tonnes.

Cargo A revenue contributionUSD per metric tonne.

Cargo B revenue contributionUSD per metric tonne.

Cargo-planning limitation: this tool screens cubic and weight capacity only. It does not replace the vessel’s approved loading manual/loading computer, stability and longitudinal-strength checks, tanktop/hold structural limits, load-line/draft restrictions, segregation, dangerous-goods requirements, IMSBC or Grain Code requirements, trim, ballast, cargo availability, port limitations or actual stowage plan. Grain and bale cubic values must come from the vessel’s approved particulars.

Methodology basis: stowage factor is the cargo-space volume required per unit of cargo weight. A vessel is “Full and Down” when the available cargo-space volume and available cargo deadweight are both fully used by the cargo mix. Grain capacity is normally larger than bale capacity because free-flowing bulk cargo can occupy spaces around frames that packaged/general cargo cannot. Broken stowage is modeled explicitly as lost usable space. The International Maritime Solid Bulk Cargoes Code remains controlling for solid bulk cargo safety, while grain in bulk is governed separately by the International Grain Code.

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