Captains Ledger

Rader Labs

About this app

Captain’s Ledger is your digital boating logbook and sea time tracker.

Whether you are a weekend boater, sailor, angler, yacht owner, charter captain, or working toward your U.S. Coast Guard captain’s license, Captain’s Ledger helps you record every trip and organize your time on the water.

Use GPS trip logging to automatically track your route, distance, speed, and time underway. Add weather notes, fuel usage, crew information, photos, and personal observations to build a complete history of your boating adventures.

Leisure Mode (Free)

Perfect for recreational boaters who want a simple and elegant captain’s log.

Manual trip entry
Route maps
Vessel profiles
Weather and fuel notes
Photos
Trip history
Offline access
Professional Mode

Designed for aspiring and licensed captains.

Sea service tracking
Estimated qualifying sea service calculations
License progress tracking (OUPV / Master)
Coast Guard documentation organization
CG-719S preparation support
PDF and CSV export
Garmin-compatible GPX import and export
Key Features
One-tap GPS trip logging
Search and filter trips
Favorites and recently viewed logs
Offline-first design
Cloud backup (future release)
Perfect For
Recreational boaters
Sailors
Fishing boat owners
Yacht owners
Charter captains
Deckhands
Aspiring U.S. Coast Guard captains

Captain’s Ledger helps you preserve your boating adventures, organize your records, and keep your captain’s log ready wherever you go.

Log your time on the water. Build your captain’s record.

What’s new

Captain's Ledger 2.0.0

New in this release:

• Improved onboarding experience and setup flow
• Fixed API configuration issues affecting app startup
• Enhanced voyage logging and vessel management
• Added stability improvements and bug fixes
• Enhanced performance across the app
• Updated user interface and overall usability

Thank you for using Captain's Ledger. We continue to improve the app based on feedback from boaters, captains, and mariners.