ISF Watchkeeper
Work and rest hour compliance made simple
ISF Watchkeeper is the industry-leading platform for crew work and rest hour compliance. It keeps track of every shift, every schedule, and every regulation, so your crew stay safe, and your fleet remains compliant.

What makes compliance difficult?
Managing work and rest hour compliance is complex. Multiple regulations, changing crew schedules, and high reporting demands mean that even small errors can create serious risks. Without a centralised system, manual tracking and scattered data make it harder to stay compliant, harder to prove compliance, and more likely for fatigue to go unnoticed – putting both safety and efficiency at risk.

Compliance that never loses connection
No two fleets are the same. That’s why ISF Watchkeeper works any way you need it to: on board with ISF Watchkeeper 3, synchronised to shore through Watchkeeper Online, or fully cloud-based with ISF Watchkeeper 4 for direct access across ship and shore. Offline or online, installed or cloud-based, your compliance stays connected.

Fit for all fleets big and small
From large commercial fleets to offshore operations and specialist vessels like tugs and yachts, ISF Watchkeeper adapts to any operation. It simplifies crew assignments, shifting schedules, and seasonal peaks – keeping compliance on track, whatever the fleet.
Why 10,000+ vessels trust ISF Watchkeeper
ISF Watchkeeper isn’t just paperwork made digital. It’s a way to make life easier – helping crews log hours accurately, enabling managers to demonstrate compliance, and giving fleets the confidence to operate without interruption.
ISF Watchkeeper 3
The industry-standard, desktop-based solution for onboard compliance tracking. Automated checks, half-hour accuracy, and built-in planning tools help crews manage work hours confidently – synchronised with Watchkeeper Online for shore-based monitoring.
Watchkeeper Online
The dedicated shoreside companion to ISF Watchkeeper 3, providing fleet-wide compliance visibility. With a centralised dashboard, automated alerts, and benchmarking tools, managers can spot issues early, reduce risk, and support continuous compliance improvements.
ISF Watchkeeper 4
Compliance without the install. As a next-generation, cloud-based solution, it works seamlessly on board and on shore, with real-time tracking, digital timesheet signing, multilingual reporting, and more – all accessible via desktop, tablet, or mobile app.
ISF Watchkeeper Tugs
Built on the ISF Watchkeeper 4 platform and designed for the unique demands of tug operations. From complex crew assignments to local regulation frameworks, it simplifies compliance with cloud access, automated checks and alerts.
ISF Watchkeeper Yachts
Powered by the ISF Watchkeeper 4 platform and tailored to the fast pace of yachting. It keeps rest hours compliant through fluctuating schedules and peak charter seasons, with mobile access, electronic approvals, and reporting that support captains and managers.
ISF Watchkeeper features
From non-conformity tracking to mobile logging, ISF Watchkeeper packs everything crews and compliance teams need for rest hour management into one trusted system.
Checks for STCW, MLC, ILO, OPA 90, OCIMF requirements
Real-time non-conformity tracking
Team planner and vessel scheduler
Fleet-wide dashboard for shore teams with Watchkeeper Online
Mobile app for logging and compliance checks
Electronic timesheet signing & multi-language reporting
Benchmarking & fleet-wide analytics (GAB add-on)
Tug and yacht-specific functionality
Offline functionality with sync when connected
Book a demo
See how ISF Watchkeeper helps you simplify work and rest hour compliance – reducing admin, preventing fatigue risks, and giving crews and managers the confidence to keep operations running smoothly.

Let’s talk safety
Got questions about work and rest hour compliance, or want to see how ISF Watchkeeper supports safer, more efficient operations across your fleet? The OneOcean team is here to help.