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The Captain's Toolbox

By Expedition Research LLC

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The Captain's Toolbox
Boat and Ship navigation and seamanship resource

Any yachtsman, weekend pleasure boater or the professional master mariner should not be without this application both on and off the water.

BUY NOW you’ll receive free updates when we add more tools in the future!

This app replaces several books, manuals, study guides and other resources in one easy to use application.

OFFLINE USE all the data is stored on your apple device. Once installed, you do not need a cellular, WiFi or internet connection to access our resources.

Maritime Tools

***The International Regulations for Preventing Collisions at Sea (COLREGS)

Published by the International Maritime Organization (IMO) and digitized into this application for easy access at sea or for study on land. It’s easier to use then the clumsy paper version and always at your fingertips.

***Maritime Navigation Lights & Shapes

An interactive and comprehensive collection of navigation lights and shapes both the USCG twilight images and zero light graphic renderings from each prospective. This tool is designed for instant access at the helm or when studying for your COLREGS exams.

***GPS Position

Quickly determine your longitude and latitude if you are running this app on your iPhone.

***Maritime Flags

Ever wonder what that flag means over on that other boat? Just spin the flag wheel, stop on the flag in question and the definition will be displayed instantly. We have also included the description common uses for these flags in modern day etiquette.

***SOLAS Symbols

SOLAS symbols, stickers and signs are listed here along with their meaning for use on-board or to prep for your IMO exams.

***Marine VHF and SSB Radio

Procedures, examples, phonetic alphabet, channels and frequencies for VHF users in the USA, Canada and internationally (MCA). SSB users will enjoy fast access to frequencies for Marine SSB, Marine Distress R/T & DSC, HF Ship to Ship, Simplex HF, Yachtsmans Nets, HF Coastal Stations, MF & HF Global Coastguard Stations (MRCC) and Distress & Safety (SAR) communication.

***Unit Converter

Every conversion you can think of and a hundred more. Whether it’s a simple fuel conversion from UK Gallons to Liters or a complicated Flow-Mass calculation, this tool has more conversions than any master mariner or naval architect will ever need.

***Glossary of Maritime and Yachting Terms

1383 terms used from ocean going ships to lake boats have been compiled in this fast and easy to use index.


This image catalog boasts real photos of common cloud formations along with their meteorological definitions, and what can be learned and predicted from reading these atmospheric phenomena.

***Morse Code

Either search the Morse code tool by graphics or alpha numeric. Keep an eye on this tool in future updates for some fun features.

***Wind Barbs

Offers quick reference to common wind charting systems. This tool boasts wind speed cross reference between Knots, MPH, direction, etc.

***Sound Signals

Quickly reference and learn all the sound signals needed for maneuvering and passing situations both on the high seas and inland waterways.

***United Nations Law of the Oceans and Sea

What's New in Version 20151019

Added zoom to Chart Symbols


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The Captain's Toolbox
View In iTunes
This app is designed for both iPhone and iPad
  • 1,99 €
  • Category: Navigation
  • Updated:
  • Version: 20151019
  • Size: 42.6 MB
  • Language: English
  • Developer:

Compatibility: Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.

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