REFERENCE & STUDY · COMING TO IPHONE
Offline maritime reference and structured study for deck officers and cadets. From a quick lookup to your next oral exam. Oral-exam practice for India DG Shipping / MMD OOW.
01 / THE FREE REFERENCE
You remember “fog”.
Deneb helps you find the rule.
Search by topic, rule number, or abbreviation. Follow source references, explore nautical diagrams, look up a glossary term, and bookmark the articles you return to.
Explore the scope of Rule 19, its explanation, and connections to other rules. Open the full article in Deneb for the complete reference.
A starting point for reviewing sound signals in restricted visibility, with the surrounding context close at hand.
Website demo with six example entries. The full reference lives in the iPhone app.
02 / STRUCTURED STUDY
For the knowledge you want to retain,
and the questions you want to answer.
Work through lessons, practise recognition, and return to material as it comes up for review. COLREG Mastery is free, with ongoing practice and progress tracking.
See what’s includedStructured lessons link back to the reference, so an answer has an explanation behind it.
Recognition drills and spaced practice help you revisit material and work on weaker areas.
Explore oral questions, model answers and mock viva practice for India DG Shipping/MMD OOW preparation.
IALA buoyage · Watchkeeping · ECDIS · GMDSS · India OOW oral practice
Selected topics. Coverage varies by subject and administration.BARS OF SIGNAL REQUIRED
OFFLINE, FROM THE FIRST OPEN
The reference and study content are bundled on your iPhone. Open the free library and study preview without a connection or a Deneb account.
03 / READING MODES
Day, Dark, and Bridge Red.
Choose the reading surface that suits you.
AFTER THE HANDOVER
A dark surface with clear, quiet contrast. Made for focused reading when the day winds down.
Try a mode. Feel the difference.
A clear starting point.
The context behind the rule.
Understand the rule, explore the explanation, and follow the connections.
04 / A CLEAR CHOICE
The planned launch offering.
No timed trial. No automatic renewal.
A useful reference in its own right, with a complete route into Study.
No Deneb account. The free preview is not a timed trial.
Unlock the other available study tracks and India DG Shipping/MMD OOW oral topics.
One purchase for the selected term.
Passes do not auto-renew.
Prices will be shown in the app before purchase.
Verified Study access works offline for the pass term. When it ends, your saved progress remains on the device and free content stays available.
BEFORE YOU COME ABOARD
Deneb is in development for iPhone. This page previews the planned launch product; no release date has been announced. Deck officers and cadets can request private beta access.
The bundled reference and free study preview work offline from first launch. Purchasing or restoring a Study pass requires a connection. Once verified, paid Study access works offline for the pass term.
No. COLREG Mastery and the Lights & day shapes orals topic are free, with ongoing practice. A Study pass opens further subjects; it does not start a recurring charge.
The current oral practice focuses on India DG Shipping/MMD OOW. Other administrations and some navigation topics are not yet included. Deneb is an independent study aid, not an official course or a certification.
Your saved progress and history stay on your device. The free reference and free study content remain available. Further practice in paid topics needs a new pass.
REFERENCE & STUDY · COMING TO IPHONE
From the first lookup to the next study session.
Built for deck officers and cadets.
