Adaptive practice, full exam simulations, and captain-reviewed explanations — checked against the rule each one cites.
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Purpose-built for the USCG exam. Not a generic quiz app — a professional maritime study system.
Every explanation cites the specific rule it rests on and is reviewed by a USCG Licensed Captain — and corrected quickly when one needs it. You'll understand the why, not just the what.
The app tracks which topics you miss and keeps bringing them back until they stick. You drill what actually needs work — not what you already know.
Full-length timed exams with a question map, flagging, and scoring that matches the real test — including the 90% Rules of the Road gate.
Not a trick question bank. Each item is written against a specific COLREGS rule or CFR section, then reviewed by a captain. You learn which option is right — and the regulation it comes from — so it holds up on exam day and on the water.
One subscription — see coverage below.
Base Licenses
Specialty Endorsements
In development
⚠ Rules of the Road requires 90% — all other sections require 70%
COLREGS hierarchy, sound signals, nav lights, and VHF procedure — on one printable page. We'll email it to you instantly.
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7-day free trial. Cancel anytime. 30-day money-back if you're not satisfied.
Or start free with 50 practice questions — no card required.
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Best for longer study timelines
No card required · 7-day free trial
Timed exam simulations are included on a free account. Pro unlocks the growing question bank and adaptive practice.
Running a maritime school or captain training program?
Bulk licensing available now. Instructor dashboards and cohort tracking are in development — talk to me about shaping them around how your programme actually runs.
Whether you're taking the kids out on the lake or planning a coastal passage, these tools make you a safer skipper.
Customizable by vessel type. Run it before every trip. Printable.
Open checklist →
🎯10 questions every boater should ace — right of way, distress, anchoring, CO safety.
Take the quiz →
📻Channels, MAYDAY calls, DSC, and radio procedure. 15-question quiz included.
Learn VHF →
⚓5 lessons on safety gear, right of way, nav lights, float plans, and MOB.
Start learning →
Everything you need to know before you set sail.
OUPV Captain's License Study Guide — a brief, focused exam prep book by Captain Mark. The Chartroom is the practice engine built alongside it.
I'm a USCG Licensed Captain with a Master's Degree in Teaching. I built The Chartroom to bring real-world experience into exam prep — each explanation citing the regulation it rests on, and explained the way I wish I'd been taught.