Colregs for Ocean Skippers
Like Duolingo, but for Colregs for Ocean Skippers. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
For the part of you with thirty open tabs that never became anything.
Free forever · No credit card · iPhone & Android
Key ideas in Colregs for Ocean Skippers
- A steady compass bearing indicates you are on a collision course
- Decreasing range means the other vessel is physically getting closer
- Hand-bearing compasses provide more accuracy than 'lining up' with a shroud
- A static bearing over time confirms a risk of collision under Rule 7
- The 'Constant Bearing, Decreasing Range' rule as the primary visual test
- Using a hand-bearing compass to verify risk
- Rule 7(c) forbids making assumptions based on scanty radar information
- CPA measures the physical gap between vessels at their nearest pass
- Intermittent signals may represent small vessels or buoys in high clutter
- TCPA helps prioritize which approaching vessel requires immediate action
- Calculating CPA and TCPA using electronic aids
- Small craft disappear in the troughs between large ocean waves
- Vessel motion makes taking an accurate compass bearing extremely difficult
- Why 'scanty' information cannot be used to assume safety
- Rule 7 requires using 'all available means' when visual data is patchy
- Small bearing changes for large vessels at close range still imply risk
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives Colregs for Ocean Skippers the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
Why do experienced skippers prefer a hand-bearing compass over simply 'lining up' a target with a part of the boat's rigging?
Get it right to open this lesson and 32 more in the app.
Where Colregs for Ocean Skippers takes you
Master the International Regulations for Preventing Collisions at Sea with a focus on sailing vessel dynamics, IALA Region A buoyage, and the specific requirements for SAMSA and RYA offshore certifications.
- 1
Immediate Action and Risk Assessment
- Determining Risk of Collision
- Action to Avoid Collision
- 2
Sailing Vessel Dynamics and Encounters
- Sailing vs. Sailing Encounters
- The Hierarchy of Privilege
- 3
Lights, Shapes, and Night Navigation
- Sailing Vessel Light Configurations
- Identifying Specialized Vessels by Night
- 4
Restricted Visibility and Sound Signals
- Conduct in Restricted Visibility
- Sound Signals for Maneuvering and Warning
- 5
IALA Buoyage and Coastal Navigation
- IALA Region A: Lateral and Cardinal Marks
- Isolated Dangers and New Hazards
- 6
Legal Responsibility and Local Application
- The General Prudential Rule
6 sections · 11 units · 33 levels. Built to play, not to enroll.
You pick the voice
Colregs for Ocean Skippers is taught in the The Professor style: clear, structured, thorough. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
More Sports on Tomo
Western Saddle Fitting: The Balanced Tree
Go beyond the basics of cinching up to understand the complex geometry of the western tree, equine anatomy, and how to ensure your horse's long-term soundness through a perfect fit.
Saxon Sandstone Trad Climbing
Master the unique ethics and technical skills of Elbe Sandstone climbing, where metal protection is banned and knots are your only lifeline.
Chess: Winning Your First Game
Go from moving your first pawn to delivering a satisfying checkmate. Learn the essential strategies that turn a board of wooden pieces into a battlefield you can control.
The Mental Edge: Sports Psychology
Unlock the psychological tools used by elite athletes to stay focused, handle pressure, and perform at your peak when it matters most.
NFL Game Day Guide
Go from confused spectator to confident fan by learning the rhythm, rules, and roles of American football.
The Tactical Eye: Reading Football
Move beyond following the ball and start seeing the game like a professional. Learn to manipulate space, exploit defensive blind spots, and master the high-speed transitions that define modern football.
Start Colregs for Ocean Skippers today.
Download Tomo, search Colregs for Ocean Skippers, and play your first lesson in under a minute.