CaptainCalc: Marine Navigator
In-app purchases
Everyone
info
500+
Downloads
About this app
CaptainCalc is a captain-made maritime operations toolkit for ship masters, deck officers, cadets and professional seafarers.
Plan voyages, work with professional tide and UKC evidence, check stability, perform celestial calculations, use bridge calculators and keep operational records in one focused Android app.
★ PROFESSIONAL TIDES, CURRENTS & UKC
Use signed global FES tide predictions, NOAA high/low-water events and available current sources with visible datum, source and confidence evidence. Point and route UKC workflows keep tide, squat, safety margins and input provenance explicit.
★ VOYAGE PLANNING & OFFLINE MAPS
Plan routes, manage waypoints, track progress and prepare supported regional or harbor-detail map packs before coverage drops.
★ GMDSS DECISION SUPPORT
Prepare DSC distress, urgency and safety worksheets, readiness checks, authorized radio-log records, and MSI/NAVTEX review with source provenance. CaptainCalc does not transmit, control radio equipment, acknowledge or relay alerts, or replace certified GMDSS equipment and approved procedures.
★ DRAFT SURVEY, STABILITY, CARGO & TANKS
Support six-draft surveys, hydrostatic interpolation, loading conditions, stability checks, cargo planning and tank sounding workflows. Results are decision support and must be verified against approved vessel data.
★ CELESTIAL NAVIGATION & BRIDGE CALCULATORS
Work sun, moon and star observations, sight reductions and fixes. Use practical calculators for ETA, CPA/TCPA, set and drift, fuel, squat and routine bridge checks.
★ RECORDS, EXPORTS & REFERENCES
Keep voyage and calculation records together, export supported PDF/CSV/GPX/KML outputs, and access COLREG, IALA and maritime reference material.
★ CAPTAIN'S LOUNGE
Join a text-only maritime discussion space for ports, routes, weather, cargo, stability and app tips. Community rules, reporting, blocking and moderation keep the Lounge focused on professional use.
FREE & PREMIUM ACCESS
Freemium is ad-supported and keeps essential tools available while online. Premium removes ads, increases usage limits and unlocks the full professional suite, including offline access and optional encrypted cloud backup/restore. Cloud backup supports up to 10 restore points, keeps eligible backups available for up to 30 days after Premium ends and does not provide live sync. Google Play manages purchase, renewal and cancellation.
IMPORTANT
CaptainCalc supports maritime work and training. It does not replace approved stability booklets, loading computers, ECDIS, official nautical publications, company procedures, statutory documentation or the master's professional judgment. Users remain responsible for all operational decisions.
Plan voyages, work with professional tide and UKC evidence, check stability, perform celestial calculations, use bridge calculators and keep operational records in one focused Android app.
★ PROFESSIONAL TIDES, CURRENTS & UKC
Use signed global FES tide predictions, NOAA high/low-water events and available current sources with visible datum, source and confidence evidence. Point and route UKC workflows keep tide, squat, safety margins and input provenance explicit.
★ VOYAGE PLANNING & OFFLINE MAPS
Plan routes, manage waypoints, track progress and prepare supported regional or harbor-detail map packs before coverage drops.
★ GMDSS DECISION SUPPORT
Prepare DSC distress, urgency and safety worksheets, readiness checks, authorized radio-log records, and MSI/NAVTEX review with source provenance. CaptainCalc does not transmit, control radio equipment, acknowledge or relay alerts, or replace certified GMDSS equipment and approved procedures.
★ DRAFT SURVEY, STABILITY, CARGO & TANKS
Support six-draft surveys, hydrostatic interpolation, loading conditions, stability checks, cargo planning and tank sounding workflows. Results are decision support and must be verified against approved vessel data.
★ CELESTIAL NAVIGATION & BRIDGE CALCULATORS
Work sun, moon and star observations, sight reductions and fixes. Use practical calculators for ETA, CPA/TCPA, set and drift, fuel, squat and routine bridge checks.
★ RECORDS, EXPORTS & REFERENCES
Keep voyage and calculation records together, export supported PDF/CSV/GPX/KML outputs, and access COLREG, IALA and maritime reference material.
★ CAPTAIN'S LOUNGE
Join a text-only maritime discussion space for ports, routes, weather, cargo, stability and app tips. Community rules, reporting, blocking and moderation keep the Lounge focused on professional use.
FREE & PREMIUM ACCESS
Freemium is ad-supported and keeps essential tools available while online. Premium removes ads, increases usage limits and unlocks the full professional suite, including offline access and optional encrypted cloud backup/restore. Cloud backup supports up to 10 restore points, keeps eligible backups available for up to 30 days after Premium ends and does not provide live sync. Google Play manages purchase, renewal and cancellation.
IMPORTANT
CaptainCalc supports maritime work and training. It does not replace approved stability booklets, loading computers, ECDIS, official nautical publications, company procedures, statutory documentation or the master's professional judgment. Users remain responsible for all operational decisions.
Maritime tools, professional tides, UKC, stability and offline workflows.
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
What’s new
CaptainCalc fixes a cloud-backup startup crash when private storage is temporarily unavailable.
App support
About the developer
Ender Soyuince
esoyuince@gmail.com
Salihler mah. Gülkent sitesi Ege caddesi no 162
35980 Dikili/İzmir
Türkiye
