The Safety Documents board is the iPad's reference library for every PDF you want your crew to be able to read on demand. Your Safety Management System, your Emergency Response Plans, your station bills, your equipment manuals, your stability booklet, your ISPS plan, your hot work permits — anything that lives as a PDF can live here, and any crew member with the iPad in their hand can pull it up in seconds.
The killer feature isn't that you can store PDFs (lots of apps do that). It's that you can download a folder for offline use with one tap, and once cached, the documents work even when there's no WiFi, no cellular signal, and no shore-side connectivity at all. For a vessel out at anchor or mid-ocean, that's the difference between having your safety documentation and not.
How it's organised
The Safety board is structured as folders, set up by your admin. A typical yacht might have folders like:
- Safety Management System (SMS)
- Emergency Response Plans (ERPs)
- Station Bills
- Risk Assessments
- Equipment Manuals
- Permits to Work
- Crew Handbook
- Charterer Welcome Pack
Inside each folder is a list of PDFs. You can nest folders too — Equipment Manuals might contain sub-folders for Engineering, Deck, Galley, and Tenders, each with the relevant PDFs inside. The depth and naming is entirely up to your admin and matches whatever organisation system your vessel already uses for safety documents.
From the iPad, tap a folder to open it. Tap a PDF to open the document in a full-screen viewer. Pinch to zoom, swipe to flip pages, tap the back arrow to return to the folder.
Downloading for offline use — the cloud icon and the green tick
Each folder on the Safety board has a small cloud icon next to it. Tapping the cloud icon downloads every PDF inside that folder (including any sub-folders) to the iPad's local storage. Once the download finishes, the cloud icon turns into a green tick, meaning the folder is fully cached and available offline.
The cache is per-iPad, not per-vessel — each iPad on your vessel makes its own decisions about which folders to download. This means you can have your bridge iPad with everything cached, and a crew mess iPad with only the crew handbook cached, and they each manage their own storage.
To remove a folder from the cache and free up space, tap the green tick. It changes back to a cloud icon, and the local copies of those PDFs are deleted from the iPad. The folder is still accessible online — it just isn't cached for offline use anymore.
What "offline" actually means in practice
When the iPad is offline (yellow "no internet" banner at the top of the screen), the Safety board behaves like this:
- Folders with a green tick remain fully usable. You can open them, read every PDF inside, zoom, scroll, search within the document — everything works.
- Folders with a cloud icon (not yet downloaded) are greyed out. Tapping them shows a message explaining that the folder needs to be downloaded while online before it can be used offline.
- The folder list itself is always visible — even offline you can see which folders exist, you just can't read documents from folders you haven't cached.
For a vessel preparing for an offshore passage, the standard practice is to open the Safety board on each iPad before leaving port and tap the cloud icon on every folder you might need access to during the passage. Five minutes of one-time downloads for weeks of guaranteed offline access.
Adding and updating documents
You can't add or modify documents from the iPad. All uploads happen in the admin panel under Safety from admin.themusterapp.com. The reason is the same as with the crew board — the iPad is read-mostly, and structural changes are admin-only so a crew member can't accidentally delete your SMS at 0200.
To add a document from the admin panel:
- Open the Safety section
- Navigate to the folder you want to add the document to (or create a new folder first)
- Drag and drop the PDF into the folder, or click "Upload" and pick the file
- Optionally drag-and-drop multiple PDFs at once — they upload in sequence with a progress bar
- The new document appears on every iPad on the vessel within a couple of seconds
If an iPad has the folder downloaded for offline use, the new document is also downloaded automatically as part of the next sync, so the offline cache stays fresh. You don't have to "re-download" the folder when documents change — the iPad does that for you.
Updating an existing document
Safety documents change. Your SMS gets revised, your ERPs get updated after a drill, your station bill gets re-issued. To update a document, the easiest path is to upload the new version with the same filename — the iPad replaces the old version with the new one and re-downloads it automatically on iPads that have the folder cached.
If you upload a new version with a different filename instead, you end up with two documents in the folder (the old one and the new one). Some yachts deliberately do this for version-tracking purposes — keeping "SMS v3.pdf" alongside "SMS v4.pdf" so the history is visible at a glance. Either approach works.
Deleting documents and folders
When an admin deletes a document from the admin panel, it's purged from every iPad's offline cache automatically the next time each iPad syncs. There's no leftover stale copy on the iPad — once it's deleted from the admin panel, it's gone everywhere within a few seconds.
Same applies to folders. Delete a folder in the admin panel and every iPad's cached copy of that folder is removed.
Tips from yachts using this in production
A few patterns we've seen work well:
- One folder per emergency type — Fire, Flooding, Man Overboard, Medical, Abandon Ship, Security, Pollution. Each folder contains the ERP for that specific emergency. When something happens, the captain knows exactly which folder to tap.
- Number your filenames — start each PDF with "01 - ", "02 - ", "03 - " so they sort in the order you want them read, not alphabetically.
- Keep the front of the folder simple — the most-used PDFs at the top, the rare reference material at the bottom. A crew member opening the folder in an emergency should see the relevant document immediately.
- Cache aggressively before any passage — at port, with WiFi, download every folder. Storage is cheap, missing documents at sea is expensive.
- Re-download before and after charter — the charter season often introduces document updates. Open each iPad and tap any folders that have updates pending.
What to read next
The Safety Documents board is closely related to the Muster List & Abandon Ship board — together they're your emergency reference library. For administrative tasks like uploading and organising documents, see the Safety Documents section of the admin help (coming soon).