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Cut route planning time by 45% with offline-first voyage tools
Sailor Planner is a cross-platform voyage planning system built for crews operating in unstable offshore environments.
It consolidates routing logic, vessel data, and operational workflows into a single offline-capable interface that keeps crews aligned when connectivity drops at sea.


Sailor Planner is a cross-platform voyage planning and tracking system built for maritime professionals operating in offshore and low-connectivity environments.
The platform combines offline-first architecture, role-adaptive workflows, and safety-focused UX to ensure accurate routing, operational visibility, and coordinated crew execution at sea.
Crews frequently operate without internet access, making cloud-dependent tools unreliable.
Routing mistakes directly impact crew safety, fuel usage, and operational outcomes.
Captains, crew, and coordinators require distinct workflows and permission layers.
Multi-day and multi-week journeys exceed the limits of traditional calendar tools.

The turning point
The challenge was reliability under constraint, not planning itself. We needed a system that works offline by default, adapts to user roles automatically, and scales from individual sailors to structured maritime teams without increasing cognitive load.
Based on research and field analysis, we focused on four structural decisions:
Full functionality without internet access, with background sync when available.
Interfaces dynamically adjust based on onboard responsibilities.
Planning is organized around journeys, not isolated tasks.
Critical data is prioritized to reduce errors under physical and cognitive stress.

All critical voyage data is stored locally with conflict-safe synchronization.
Clear route mapping with structured waypoints and timeline logic.
Operational events are automatically recorded with minimal manual input.
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