Water Supply Tool

Tender Shuttle Calculator

Estimate tender round-trip cycle time, delivered GPM, and the number of tenders needed for target flow.

Inputs

Tender tank size (gal)

Usable water (%)

Fill time (min)

Dump time (min)

One-way distance (miles)

Average travel speed (mph)

Staging/turnaround total (min)

Number of tenders

Target fire flow (GPM)

Initial water on scene (gal)

Training/reference aid only. Follow department SOPs, instructor direction, manufacturer data, and local conditions.

Cycle time

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Flow per tender

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Total shuttle flow

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Tenders needed

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Enter values and calculate.

Use this for rural water supply planning, training evolutions, and estimating whether your shuttle can maintain a target fire flow.