DG Segregation: IMDG Bay Plan

SJW DG Segregation checks IMDG segregation requirements against your actual bay plan — entirely on your device, no internet required.

BUILD YOUR VESSEL PROFILE
Set bay/row/tier counts and hold boundaries once, with a live preview as you type. Reuse it every voyage.

DG LIST WITH REAL VOYAGE DATA
Add DG items with UN number, packing group, subsidiary hazards, container number, POL/POD, stowage category and EmS Fire/Spill codes. Import three ways:
• Attach file — CSV or text export from your DG DATA sheet (recommended)
• Paste — copy rows straight from a manifest sheet
• Photo recognition (beta, mobile only) — scan a printed list, review every row before it's added
Scan a single DG placard photo to look up a UN number against the 49 CFR 172.101 database.

BAY PLAN GRID
Place containers bay by bay, row by row, tier by tier — on deck or under deck, closed or open (flat-rack / open-top / platform) CTU. Switch to Preview mode to see every empty slot shaded green, amber or red for a selected item before you commit to a position.

CHECK TAB
Full-stow violation scan across every placed pair, a manual pair checker for any two items, stowage-category checks (deck-only cargo placed under deck), and a voyage EmS summary (Fire/Spill codes) at a glance. Amber means "verify against the official table" — this app never shows green unless a slot is actually confirmed compliant.

BUILT FOR THE SAFETY-FIRST CASE
This is a planning aid, not a substitute for the IMDG Code, the vessel's Document of Compliance or company DG procedures. Always verify against official publications — the final decision remains with the ship's officers.
PRIVACY BY DESIGN
No ads. No account needed to plan or check — sign-in is optional and only for the Community tab. Photo recognition runs on-device — images are never uploaded. Your vessel and cargo data stays on your device unless you choose to export it. Camera access is used only for on-device text recognition (DG list, placards, DoC certificate) and for CTU packing checklist photos.

34 languages. Planning and checks work offline; Community and in-app purchases need internet. Built for working navigators.