Ballast Weight Calculator

Calculate ballast requirements for vessel trim, stability, and wake enhancement

Degrees

Ballast Requirements

Recommended Ballast --
Volume Required --
Placement --
Draft Change --
% of Displacement --
Tank Dimensions (if water) --
Fill Time (500 GPH pump) --

Ballast Material Properties

Material Density Cu Ft per 100 lbs
Fresh Water62.4 lb/cu ft1.60
Salt Water64.0 lb/cu ft1.56
Lead Shot710 lb/cu ft0.14
Steel490 lb/cu ft0.20
Concrete150 lb/cu ft0.67

Ballast Guidelines

Safety Considerations

Never exceed manufacturer's maximum weight capacity. Account for passengers, fuel, and gear.

Ballast should be securely fixed to prevent shifting. Loose ballast is extremely dangerous.

Water ballast tanks must have proper venting to prevent pressure buildup or implosion.

Placement Tips

Trim correction: Place ballast opposite the heavy end (bow heavy = stern ballast).

Stability: Lower is better. Place ballast as low as possible in the hull.

Wake sports: Asymmetric ballast for surfing (heavy side creates bigger wake on opposite side).