Lift Type
Load Weight
t
Enter the actual load weight only.
Rigging Weight
t
Enter the total rigging weight (slings, shackles, spreader beam, lifting accessories, etc.).
Hook Block Weight
t
Enter the crane hook block weight.
Dynamic Amplification Factor (DAF)
×
Default 1.10 for dynamic lifts. Tap ▼ to select from sea state table. Minimum 1.00.
Crane Working Radius
m
Enter the working radius (for reference / record).
Crane Rated Capacity at Selected Radius
t
Enter the crane rated capacity at the selected working radius.
0%
Utilization
○
—
Static Load
—
tonne
Available
—
tonne
Safety Margin
—
%
Lift Category
—
—
⚠
Overload Warning
Crane utilization exceeds recommended limits. Do not proceed without engineering review.
Static Load = Load + Rigging + Hook Block
Dynamic Load = Static Load × DAF
Utilization % = (Dynamic Load ÷ Capacity) × 100
Colour Zones
0 – 70% — Safe operating range
70 – 90% — Caution / Critical lift planning required
90%+ — Danger / Not recommended
Reference Standards
ASME B30.5
ASME B30.9
OSHA 1926.1400
ISO 4301