HomeCalculatorsBallast Exchange - Volumetric Method

Ballast Exchange - Volumetric Method

Volumetric ballast-water exchange - requires 300 % full tank volume pumped through to achieve 95 % replacement per BWM D-1.

D-1VolumetricExchange
Pump-through volume
6,000

Formula, assumptions, and limits

3× tank volume replaces 95 % with 99 % certainty. Alternative: sequential (discharge + refill). Discharge mid-ocean risks ship's stability - pre-approved tank sequence required.

Symbol legend

SymbolMeaningUnitSource
Tank volumecapacity plan