Observed arrival · 2026-10-10
Sekisai: a 3D cargo-loading simulator
A free, no-login calculator for estimating carton and pallet loads across containers, trucks, and warehouses.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Japanese-speaking shippers planning mixed cargo loads
- Worth noticing
- It checks whether cartons or pallets can pass through a container’s door opening, with separate clearance settings for the rear, door, left, and right.
Field notes
Users select a location profile—such as 20- or 40-foot containers, JR 12ft rail containers, kei trucks, 4-ton flatbeds, or a warehouse—and enter carton dimensions, weight, and quantity. The calculator supports direct or pallet loading, configurable clearances, stack limits, and door-opening checks; results can be inspected in 3D and a floor plan. It allows up to 10 carton sizes, but explicitly excludes box crushing, securing gaps, and floor load limits.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue