Available calculators:

Celestial Navigation:
- Altitude Correction for Air Temperature
- Altitude Correction for Atmospheric Pressure
- Altitude Factors & Change of Altitude
- Compass Error from Amplitudes Observed on the Celestial Horizon
- Compass Error from Amplitudes Observed on the Visible Horizon
- Latitude and Longitude Factors
- Meridian Angle and Altitude of a Body on the Prime Vertical Circle
- Pub 229
- Table of Offsets

Conversions:
- Chart Scales and Conversion for Nautical and Statute Miles
- Conversion for Meters Feet and Fathoms

Distance:
- Dip of Sea Short of the Horizon
- Distance by Vertical Angle Measured Between Sea Horizon and Top of Object Beyond Sea Horizon
- Distance by Vertical Angle Measured Between Waterline at Object and Sea Horizon Beyond Object
- Distance by Vertical Angle Measured Between Waterline at Object and Top of Object
- Distance of an Object by Two Bearings
- Distance of the Horizon
- Geographic Range
- Length of a Degree of Latitude and Longitude
- Meridional Parts
- Speed for Measured Mile and Speed Time and Distance
- Traverse Table

Log and Trig:
- Logarithmic and Trigonometric Functions

Sailings:
- Great Circle Sailing
- Mercator Sailing

Time Zone Table:
- Time Zones Zone Descriptions and Suffixes

Weather Data:
- Barometer Measurement Conversions
- Correction of Barometer Reading for Gravity
- Correction of Barometer Reading for Height Above Sea Level
- Correction of Barometer Reading for Temperature
- Direction and Speed of True Wind
- Relative Humidity and Dew Point
- Temperature Conversions