Home › Education
Information
Preview 1 platform
iPhone 8 images
What’s New Version 1.5
ROR International, Inland and IALA MBS exam practice tool, developed by a Master Mariner. Test your knowledge of the rules.
Description
Master-Nav: COLREGS IALA Tests is a free practice app developed by a Master Mariner with 30 years of seagoing experience.
Test your knowledge of the USCG Navigation Rules and IALA Maritime Buoyage System — the regulations every mariner needs to know.
A straightforward way to find out where you stand, identify gaps in your knowledge and track your progress over time.
Master COLREGS & IALA — the easy way.
Accessibility
ipadiphonemacrealityDevicetvoswatch
Version history 6 versions
Build 886956651v1.52026-06-15 14:44:46
ROR International, Inland and IALA MBS exam practice tool, developed by a Master Mariner. Test your knowledge of the rules.
Build 886352923v1.42026-05-31 23:18:38
Improved navigation-light graphics and animations on the vessel identification questions, plus a few display fixes and refinements.
Build 885213786v1.32026-05-04 00:23:45
Q100 and Q300 mock exams matching the structure of actual USCG NMC releases — plus 400+ new questions added to the bank, including 223 illustration-based questions.
Build 884395325v1.22026-04-11 18:19:37
New Rule 18 drag-to-order vessel priority questions, UI improvements and bug fixes.
Build 884072939v1.12026-04-02 20:41:03
Updated graphics for Part D : sound signals.
Build 882039081v1.02026-03-20 09:38:15
No pricing data captured yet — comparisons appear once the app has paid storefronts or in-app purchases.
Availability 6 of 6 storefronts
| Region | Language | Price | Ratings | Avg | Version |
|---|---|---|---|---|---|
 GB | en-GB | Free | 2 | 5.0 | 1.5 |
 CA | en-CA | Free | 1 | 5.0 | 1.5 |
 IE | en-GB | Free | 1 | 5.0 | 1.5 |
 AU | en-AU | Free | 0 | — | 1.5 |
 NZ | en-AU | Free | 0 | — | 1.5 |
 US | en-US | Free | 0 | — | 1.5 |
Change log 10 changes · US
✎
releaseNotes updated
ROR International, Inland and IALA MBS exam practice tool, developed by a Master Mariner. Test your knowledge of the rules.
✎
description updated
Master-Nav: COLREGS IALA Tests is a free practice app developed by a Master Mariner with 30 years of seagoing experience.
Test your knowledge of the USCG Navig
✎
subtitle updated
Practice Maritime Rules Daily
✎
name updated
Master-Nav: COLREGS IALA Tests
◆
Version 1.5 released
ROR International, Inland and IALA MBS exam practice tool, developed by a Master Mariner. Test your knowledge of the rules.
◆
Version 1.4 released
Improved navigation-light graphics and animations on the vessel identification questions, plus a few display fixes and refinements.
◆
Version 1.3 released
Q100 and Q300 mock exams matching the structure of actual USCG NMC releases — plus 400+ new questions added to the bank, including 223 illustration-based questions.
◆
Version 1.2 released
New Rule 18 drag-to-order vessel priority questions, UI improvements and bug fixes.
◆
Version 1.1 released
Updated graphics for Part D : sound signals.
◆
Version 1.0 released