The state-of-the-art solution to navigation computations on your iPhone or iPod touch.
StarPilot does celestial sight reductions of all bodies using high-precision internal almanac, plus mathematical and graphic solutions for position fixes, great circle, rhumb line, traverse and composite sailings, all current problems, piloting solutions, and much more...including lunar distance method of finding GMT from the sky and a unique graphical Sight Planner, and the new Sight Analyzer function that helps you get the most accurate results from a series of sights.
The StarPilot is the self sufficient state of the art solution to ocean navigation, fully up-gradeable with free upgrades available via Internet download, easy to use operation from logical menu lists, plus illustrated context sensitive help with practice exercises. The StarPilot requires no external resources to complete its computations. Internet access is not required to use this program or to access any of its help files.
General program design features... that save time, keystrokes, and minimize errors
- Easy to use menu-driven interface
- Stored settings of commonly used values
- All bodies and star names stored internally, no need for separate lists
- DR functions integrated with the celestial functions
- Convenient DR updating by log or time
- Input courses as true or magnetic
- Convenient time input, with or without zone description and watch error
- Graphing calculator plots LOPS, Fixes, DR positions, and Star maps
- Program can be easily updated to incorporate latest version and features
- Custom menu bar for quick navigation to often-used functions
- Sunrise, Sunset, times and bearings (amplitudes)
- LAN, time, Equation of time, Hs max at LAN1
- Nautical and Civil twilight times, and LHA Aries at midpoint between them
- Moonrise, Moonset, Moon phase, and Moon age
- Precompute specific values of Hc and Zn for any body
- Planet and Star ID by observed height and bearing
- SIGHT PLANNER function plots full sky showing moon, stars, and planets in Radar-like display of heights and bearings. Set Hc min/max and max number of stars before computation. Set cursor and click to read the actual height and bearing of a plotted body.
- Special fast almanac mode allows full sky plot
- Display internal list of 173 stars by name, brightness, and location
- Unique BEST SIGHTS function selects the optimum triads of sights for any sky
- Optional modes for sequential sights using repeated settings or unrelated individual sights
- Perpetual almanac accurate to 2100+
- Historically accurate almanac data to 16th century
- Sight reduction of Sun, Moon, Mars, Venus, Jupiter, Saturn... plus Mercury!
- Sight Reduction of 173 stars plus Polaris
- “Assumed positions” read directly from DR section without extra input
- View intercepts (a-values) with or without course and speed corrections
- Full input data displayed with results to check for errors
- Special center-body mode for artificial horizon data
- Dip-short mode for practice at shorelines
- Unique SIGHT ANALYZER fits a sequence of sights to the right slope for optimum sight selection
- All fixes corrected automatically for course and speed as needed
- Fix accuracy independent of DR accuracy in all cases
- Plots LOPS with live cursor position display
- Fix computed by USNO algorithm in the Nautical Almanac
- Zoom in on plot to see where computed fix is located
- Fix can be obtained by graphic selection from the LOP plot
- Automatic display of DR-to-Fix range and bearing
- Optional automatic update of DR after fix
- Display new course and distance to stored destination
Special Celestial Functions
- Latitude and Longitude by Meridian passage
- Latitude by Polaris sighting
- High precision Azimuth of Polaris for surveying or compass checks
- Recover lost GMT using unique Lunar distance analyzer
- Compass calibration via sun shadow method or ship's pelorus
- Sight reduction by external almanac data bypasses internal almanac for
- Literal checking of textbook problems.
Route planning utilities
- Rhumb line course and distance with automatic comparison to GC
- Great circle course and distance
- Great circle waypoints
- Composite sailing track latitude limited great circle route
- Traverse Table computations
- DR computations by speed and time or by log readings
- Long-distance ETA computes local time and date of arrival, any time zone, any longitude, any date
- Distance outputs to 2 decimal places for DGPS comparisons
- Distance off by vertical sextant angle horizon to top
- Distance off by vertical sextant angle base to top
- Distance off by vertical sextant angle base to horizon
- Distance off by two bow angles and distance run
- Geographic Range computer
- Numerical solutions to running fixes (PC only)
- Numerical solutions to 3-point sextant fixes for precision PC piloting
- Find COG and SOG from course and speed plus set and drift
- Find course to steer to make given COG, given set, drift, and speed
- Find set and drift from COG and SOG and course and speed
- Find course to steer and speed for given ETA across current
- Convenient Speed-time-distance computer
- Find true wind from apparent wind
- Interpolate Tide height between highs and lows
- Interpolate Current speed between peak and slack
- Compute Magnetic Variation
Magnetic Var tables updated for 2015-2020
Compiled agains iOS 9.2 SDK
Ratings and Reviews
Best in class
As a professional US navy navigator I've used this app daily for at least 7 years. First on a TI89 calculator, then on iPhones starting with a 4s when that was new. Now on a 7 Plus.
Makes my work easier and would be lost without it. The U/I may not be as polished as an app from Apple but it certainly does the job.
Have never had a single crash or malfunction. Paid once for the app years ago and have benefited from regular updates.
It is the only Nav app I recommend to other officers and cadets.
Waiting for any updates
I'm using Starpilot for taking gyro errors and position fixing frequently. It's giving a very precise figures and very reliable and can be used for navigation on big vessels. I'm recommending this app for all navigators, at the moment it's the best one.
But it will be great to have a features such as : printing of determined position by dead reckoning and observed position. At least possibility to save it and then to print manually from album or whatever. Also will be nice to have an option to take a position and time fix automatically by pushbutton on taking a sight! A little improvement in a drawing of chart mercator's scale and observed position will be nice(sometimes very hard to read something there and not a perfect tool for zooming). Will be nice to include possibility of reviewing of daily Almanac and associated pages for manual calculations(useful for practical navigators for improving skills). Thanks, and waiting for updates! If will be any improvements I'll recomend and spread between many of my iPhone-users and navigators this great application! Good luck!
Starpilot on Antarctic Voyage
The Star Pilot package is absolutely fantastic. I have had the good fortune to complete two voyages across the South Atlantic, the first in the yacht Pelagic Australis and the second via Antarctica in the three masted barque Europa, both were hugely enjoyable voyages. Throughout both voyages I took sun, moon and star sights whenever possible, instead of dreading getting out all the tables I had a position within minutes of taking the final sight thanks entirely to the Star Pilot software installed on a Ti 89. This has huge advantages over a laptop as the skipper does mind if you leave it around the chart table and it is much easier to keep safe and dry. The satisfaction of consistently getting positions within 10 miles of the GPS is very satisfying but on a two month voyage there is also a great deal of pleasure to be gained in planning the star sights each day and entering the results in the log, it is a great way to learn more about the our universe. There are other navigational calcs as well and even though I don't need the rhum line course from Cowes to Lymington I still take the Star Pilot on my coastal cruises.
Excellent piece of kit.
With Family Sharing set up, up to six family members can use this app.