About Nautical Calculators Pro
Nautical Calculators Pro. -Calculating for marine navigation, included : +Route Plan; +Plane Sailing; +Traverse Sailing; +Real Time Running; +Current and wind sailing; +Allowing for current and wind; +Wheel Ov
Nautical Calculators Pro.
-Calculating for marine navigation, included :
+Route Plan;
+Plane Sailing;
+Traverse Sailing;
+Real Time Running;
+Current and wind sailing;
+Allowing for current and wind;
+Wheel Over;
+Meridional parts;
+Calculate true wind and apparent wind on a ship running;
+Correction of sounding;
+Additional calculations;
+Google Map and Location;
+Nautical Almanac;
+Database for Celestial LOPs;
+Star and Sun LOPs;
+Fix with two of LOPs;
+Fix with three of LOPs;
+Find the name of a star;
+Correcting marine sextant altitude of sun and stars;
+Rhumb-Line Sailing;
+Great-Circle Sailing;
+Probability Distribution Function;
+Standard deviation and error;
-Calculating for marine maneuvering, included :
+Course and speed of a target ship;
+Closest point of approach(CPA);
+Keep watch for a target ship within a range of distances;
+Data of station with time, distance and bearing specified;
+Determine the ability to reach a target ship going faster;
+Avoid collision;
+Take a station with :
-course specified;
-speed specified;
-time specified;
+ Close or open to a target ship in cases :
-as quickly as possible;
-on a constant bearing;
-with time specified;
+Maneuver to intercept a target ship running faster;
+Maneuver to intercept ahead a target ship;
+Time and Distance of intercepting ahead a target ship;
+Maneuvering with added calculating of turning;
+Close to a target ship as close as possible;
-For researching, included :
+The international regulations for preventing collisions at sea (COLREG) (Rules, Lights signs, Shapes signs and Sounds signs);
+The marine signalization : Flag signalling, Morse signalling by hand, Morse code;
+Show maritime buoyage system;
+Glossary of Marine Navigation;
+Busiest container ports;
+World lighthouses system.
-Units Conversion in Maritime
The interfaces display in two languages : English and Vietnamese.
author Vu Cong The.
[email protected]
Previous Versions
Here you can find the changelog of Nautical Calculators Pro since it was posted on our website on 2019-08-20 17:01:09.
The latest version is and it was updated on 2026-06-16 20:12:12. See below the changes in each version.
Nautical Calculators Pro version
Updated At: 2026-06-16
Changes: Improved:
+No advertising used;
+Database for Maneuvering(improved);
+Nautical Maneuvering(Graphics);
+Location and Mapview;
+Nautical Almanac(moon and the 2026 publication);
+Font and Interfaces;
+Database for Celestial LOP.
+Plane Sailing and Traverse Sailing;
+Colregs(shapes and sound);
+Lighthouse System;
+Fixed bug in Plane Sailing section, thanks to Captain Noah Smith;
+Additional Calculations;
+Time and distance of intercepting ahead a target ship;
Nautical Calculators Pro version
Updated At: 2026-06-04
Changes: Improved:
+Database for Maneuvering(improved);
+Nautical Maneuvering(Graphics);
+Location and Mapview;
+Nautical Almanac(moon and the 2026 publication);
+Font and Interfaces;
+Database for Celestial LOP.
+Plane Sailing and Traverse Sailing;
+Colregs(shapes and sound);
+Lighthouse System;
+Fixed bug in Plane Sailing section, thanks to Captain Noah Smith;
+Additional Calculations;
+Time and distance of intercepting ahead a target ship;
Nautical Calculators Pro version
Updated At: 2026-05-27
Changes: Improved:
+Database for Maneuvering;
+Nautical Maneuvering(Graphics);
+Location and Mapview;
+Nautical Almanac(moon and the 2026 publication);
+Font and Interfaces;
+Database for Celestial LOP.
+Plane Sailing and Traverse Sailing;
+Colregs(shapes and sound);
+Lighthouse System;
+Fixed bug in Plane Sailing section, thanks to Captain Noah Smith;
+Additional Calculations;
+Time and distance of intercepting ahead a target ship;
Nautical Calculators Pro version
Updated At: 2026-03-21
Changes: Improved:
+Additional Calculations (Distance by Vertical Angle);
+Nautical Maneuvering(Graphics);
+Location and Mapview;
+Nautical Almanac(moon and the 2026 publication);
+Font and Interfaces;
+Database for Celestial LOP.
+Plane Sailing and Traverse Sailing;
+Colregs(shapes and sound);
+Lighthouse System;
+Fixed bug in Plane Sailing section, thanks to Captain Noah Smith;
+Additional Calculations;
+Time and distance of intercepting ahead a target ship;
Nautical Calculators Pro version
Updated At: 2026-03-08
Changes: Improved:
+Nautical Maneuvering(Graphics);
+Location and Mapview;
+Additional Calculations;
+Nautical Almanac(moon and the 2026 publication);
+Font and Interfaces;
+Database for Celestial LOP.
+Plane Sailing and Traverse Sailing;
+Colregs(shapes and sound);
+Lighthouse System;
+Fixed bug in Plane Sailing section, thanks to Captain Noah Smith;
+Additional Calculations;
+Time and distance of intercepting ahead a target ship;
Nautical Calculators Pro version
Updated At: 2026-02-19
Changes: Improved:
+Nautical Maneuvering(Relative Movement);
+Location and Mapview;
+Additional Calculations;
+Nautical Almanac(moon and the 2026 publication);
+Font and Interfaces;
+Database for Celestial LOP.
+Plane Sailing and Traverse Sailing;
+Colregs(shapes and sound);
+Lighthouse System;
+Fixed bug in Plane Sailing section, thanks to Captain Noah Smith;
+Additional Calculations;
+Time and distance of intercepting ahead a target ship;
Nautical Calculators Pro version
Updated At: 2026-02-11
Changes: Improved:
+Additional Calculations;
+Nautical Maneuvering;
+Nautical Almanac(moon and the 2026 publication);
+Font and Interfaces;
+Marine Maneuvering(graphics and examples);
+Database for Celestial LOP.
+Plane Sailing and Traverse Sailing;
+Colregs(shapes and sound);
+Lighthouse System;
+Fixed bug in Plane Sailing section, thanks to Captain Noah Smith;
+Additional Calculations;
+Time and distance of intercepting ahead a target ship;
+Real Time Running;
Nautical Calculators Pro version
Updated At: 2026-01-28
Changes: Improved:
+Nautical Maneuvering;
+Nautical Almanac(moon and the 2026 publication);
+Font and Interfaces;
+Marine Maneuvering(graphics and examples);
+Database for Celestial LOP.
+Plane Sailing and Traverse Sailing;
+Colregs(shapes and sound);
+Lighthouse System;
+Fixed bug in Plane Sailing section, thanks to Captain Noah Smith;
+Additional Calculations;
+Time and distance of intercepting ahead a target ship;
+Real Time Running;
Nautical Calculators Pro version
Updated At: 2026-01-17
Changes: Improved:
+Nautical Almanac(moon and the 2026 publication);
+Font and Interfaces;
+Marine Maneuvering(graphics and examples);
+Database for Celestial LOP.
+Plane Sailing and Traverse Sailing;
+Colregs(shapes and sound);
+Lighthouse System;
+Fixed bug in Plane Sailing section, thanks to Captain Noah Smith;
+Additional Calculations;
+Time and distance of intercepting ahead a target ship;
+Real Time Running;
Nautical Calculators Pro version
Updated At: 2026-01-10
Changes: Improved:
+Font and Interfaces;
+Marine Maneuvering(graphics and examples);
+Nautical Almanac;
+Search quickly using the search boxes in:
-Lighthouses;
-Busiest Container Ports;
-Celestial LOP;
-Nautical Almanac.
+Database for Celestial LOP.
+Plane Sailing and Traverse Sailing;
+Colregs(shapes and sound);
+Lighthouse System;
+Fixed bug in Plane Sailing section, thanks to Captain Noah Smith;
+Additional Calculations;
+Time and distance of intercepting ahead a target ship;
+Real Time Running;
Disclaimer
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