Answer
To calculate the required Sludge tank capacity for a ship, following factors need to be kept in mind. The basic thumb rule is that the sludge generated is generally 1 % of the fuel consumed. It depends on :
• Size if the ship.
• Bunker storage capacity.
• Length of the Voyages on an average.
• Bunkers consumed /day.
• Sludge formation.
• Type of filtration and backwash equipment.
• Incineration capacity.
• Evaporation capacity.
• Sufficient allowance for inadvertent leakages.