The only Merchant Mariner Credential prep platform with adaptive question selection, an AI tutor, spaced repetition, and module-by-module readiness — including the 90% Rules of the Road threshold.
2,000+ questions across every USCG exam module. One-time payment. Lifetime access.
One-time payment. Lifetime access. AI Tutor available as optional add-on.
2,000+
Practice Questions
11
USCG Exam Modules
90%
Rules of the Road
3
Credential Tracks
Every question is calibrated with an Item Response Theory (3-parameter logistic) model so the engine can estimate your ability and pick the next question at the ideal difficulty. You never waste time on material that's too easy or too hard — and the readiness score tells you when you're genuinely ready for the 70% (or 90% for Rules) cutoff.
Deck, Engineer, or Rating. We'll show you only the USCG modules that apply to your credential.
Our AI engine drills your weak areas. Every question is picked for where you are — not where everyone else is.
Per-module readiness score — including the 90% Rules of the Road threshold. Walk into REC testing confident.
Features no other MMC prep platform offers — all included in one purchase.
IRT 3-Parameter engine picks questions at your exact skill level — across Nav General, Nav Problems, Rules, Deck General, Deck Safety, and more.
Practice navigation problems — set and drift, fix by bearings, running fix, ETA — with an interactive chart workspace.
Timed drills on lights, shapes, sound signals, and COLREGS — calibrated to the 90% pass threshold that trips most candidates up.
Stuck on a question? Get a step-by-step explanation with the exact CFR or COLREGS citation. Optional add-on ($26/mo).
Missed a question? Our SM-2 algorithm brings it back at the perfect interval so the buoyage system, sound signals, and life-saving regs stick for good.
Timed, full-length practice exams per module — with pass/fail scoring at the correct 70% or 90% threshold.
Per-module readiness, concept mastery heat maps, and calibration charts — so you know exactly which modules you can sit tomorrow.
Personalized weekly plan tuned to your REC exam date and weak areas. Export to .ics or Google Calendar.
Study at anchor, underway, or on the dock. Native iOS app with full sync to your web account.
Every module. Every concept. CFR and COLREGS citations on every explanation.
Aids to navigation, IALA-B buoyage, publications, chart reading, tides and currents, compass error.
Dead reckoning, set and drift, running fix, celestial sight reduction, ETA calculations.
COLREGS & Inland Rules — lights, shapes, sound signals, steering and sailing rules, distress signals.
Cargo handling, stability, anchoring, mooring, ship construction, deck equipment, bridge procedures.
Firefighting, life-saving equipment, pollution prevention (MARPOL, OPA 90), damage control, emergency response.
One-time purchase vs. the monthly-subscription pack. More questions, better engine, lower price.
| Feature | MMCE.app | Others |
|---|---|---|
| Practice questions | 2,000+ | ~900 |
| Adaptive AI engine (IRT) | ✓ | ✗ |
| AI tutor with CFR citations | ✓ | ✗ |
| Spaced repetition | ✓ | ✗ |
| Rules-of-the-Road blitz (90%) | ✓ | Basic |
| Chart plotting drills | ✓ | ✗ |
| Full-length timed exams | ✓ | ✓ |
| AI study plans | ✓ | ✗ |
| iOS app | ✓ | ✗ |
| Price | $69 once | $80/mo |
Deck officers, engineers, and ratings preparing with MMCE.app
"The Rules-of-the-Road blitz is the only tool I've used that actually simulates the 90% cutoff pressure. Passed first sitting."
Patrick L.
Third Mate, Unlimited Oceans
"The AI tutor citing 46 CFR and COLREGS rule numbers on every explanation saved me weeks of digging through the regs."
Rachel D.
Mate 500/1600 Near Coastal
"I'm on the QMED track — first prep platform I've seen that covers engine room questions at our level instead of just deck."
Jamal K.
QMED — Electrician
"Readiness score told me I was good on Deck General but not Deck Safety. Studied one more week — passed everything."
Miguel V.
Master 200 GRT
Lifetime access to everything. No subscriptions. No hidden fees.
Veteran & merchant-mariner discount: $51.75 (25% off)
Optional add-on: AI Tutor — $26/mo
Step-by-step explanations with CFR / COLREGS citations on every question. Add or cancel anytime.
One-time payment. Lifetime access.
The MMC is the credential issued by the US Coast Guard for commercial mariners — officers, engineers, and ratings. Applicants sit for a set of written exam modules that depends on the credential and tonnage/horsepower they're going for. Pass is 70% per module, except Rules of the Road which requires 90%.
Deck Officer (Nav General, Nav Problems, Rules of the Road, Deck General, Deck Safety), Engineering Officer (Engineering General, Motor Plants, Engineering Safety, Electrical), and Rating (AB, QMED). Pick your track at sign-up and we only surface modules relevant to you.
Unlike the rest of the MMC exam (70% pass), Rules of the Road requires 90%. It's the single most-failed module. Our Rules-of-the-Road blitz is calibrated to that cutoff — your readiness score won't mark you ready until you're reliably hitting it in timed conditions.
We're the only MMC platform using Item Response Theory to adapt to your ability in real time. Every explanation cites the specific CFR or COLREGS rule, the readiness score is per-module (not a vague overall number), and it's a one-time payment instead of a monthly subscription.
Yes. $69 once, lifetime access to all content, the iOS app, and all future updates. No recurring charges. The AI Tutor is the only optional monthly add-on.
Yes — native SwiftUI app with every feature from the web, including offline-ready quiz sessions. Great for studying at anchor or on the bridge watch.
Walk into the REC prepared. Adaptive drills, AI tutor, CFR-cited explanations — everything you need to pass every module on the first sitting.
Start Preparing — $6925% off for veterans and current merchant mariners