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Marine Simulator Training
Practise COLREG decisions and VHF radio drills in a realistic simulator — on demand, on any device, until the right call is automatic.
Monthly
€9.99/month
First 3 days free · cancel anytime
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Annual
€79.00/year
€6.58/month equivalent · first 3 days free
€0 today. We charge at the end of day 3 — cancel anytime before then from the Stripe billing portal.
54 COLREG / AIS scenarios
15 VHF SRC radio drills
10 free demo scenarios — no signup
RYA · IYT · STCW · Yachtmaster prep
Why a simulator Reading the COLREGs ≠ knowing what to do on the graveyard watch in fog.
Books and videos make you recognise the rules. Simulators make you act on them — under time pressure, with the right priorities, until the correct decision is muscle memory. Practise the same situations over and over, fail safely, and walk onto the bridge with answers already loaded.
Decisions, not facts
Each scenario asks: what action do you take, what signal do you give, who gives way? Wrong answer → instant feedback citing the exact rule.
Repeat until automatic
Re-run any scenario as many times as you like. Track your progress per scenario. The goal isn't to "pass" — it's for the right call to feel obvious.
Built for exam prep
Every scenario maps to a COLREG rule or a VHF SRC procedure that examiners actually test. The titles cite the rule directly so you build a map of the syllabus while you train.
What you'll be able to do Concrete skills you'll walk away with
Cross a TSS the right way— at right angles, knowing when you're a "vessel using the lane" and when you're "crossing".
Read any vessel's lights at night— rotate the target ship 360° and see exactly which lights show from each angle. No more confusing a tug from a fishing vessel.
Train right-of-way until it's reflex— power vs sailing, fishing, restricted, constrained-by-draught. Drilled in dozens of variations until you don't need to think.
Handle multiple ships at once— the realistic case where two or three targets converge. Practise the priority of action that single-target scenarios never teach.
See COLREG visually— go through the rules with the actual ship in front of you, not a paragraph in a book. The rule reads itself when you watch it happen.
Practise DSC for real— send distress, urgency, safety and routine DSC calls on a working keypad. Build the muscle memory before the real radio is in your hand.
Press the red button safely— the one place in the world you can fire a Mayday and a DSC distress alert without scrambling the coastguard. Drill it until it's second nature.
COLREG · AIS Bridge Simulator 54 collision-avoidance scenarios across 7 modules
A web-based bridge: AIS targets, radar, lights, sound, ship-handling response. Pick a scenario, assess the encounter, decide on action, get feedback against the actual COLREG. From the basics of CPA/TCPA to multi-target night encounters.
Fundamentals 7 scenarios
Build the underlying habits — risk assessment, lookout, CPA/TCPA reading — that every other scenario builds on.
Includes
- Familiarisation – free roam mode
- CPA/TCPA recognition
- Safe speed
- Lookout scan
- Rule 2 dilemma
- Rule 8 — action to avoid
- Multi-target traffic
Narrow Channels & TSS 4 scenarios
Make confident decisions in the most legally-loaded waters — channels, lanes and traffic-separation schemes where mistakes cost certificates.
Includes
- Crossing a TSS at right angles
- Joining a TSS
- Narrow channel rules
- Overtaking inside a narrow channel
Vessels In Sight 9 scenarios
The bread-and-butter of collision avoidance: head-on, crossing, overtaking and the moment a stand-on ship has to act.
Includes
- Head-on meeting
- Crossing — give-way
- Crossing — stand-on
- Overtaking
- Being overtaken
- Stand-on — last moment
- Sailing vs sailing
- Rule 34 manoeuvring signals
- Rule 34 — doubt signal
Responsibilities Between Vessels 5 scenarios
Memorise the pecking order — who keeps clear of whom — until it's instinct, not a flowchart.
Includes
- Power vs sailing
- Power vs fishing
- Power vs vessel constrained by draught
- Power vs vessel restricted in ability to manoeuvre
- Sailing vs fishing
Restricted Visibility 7 scenarios
In fog Rules 11–18 don't apply. Train for fog-specific decisions before you're in fog and out of options.
Includes
- Target right ahead
- Target on port bow
- Target on starboard bow
- Target abeam starboard
- Target abaft port
- Close-quarters in fog
- Rule 35 — sound signals underway
Sound Signals 4 scenarios
Recognise — and produce — the right whistle blasts before the examiner asks. Audio cues built into every scenario.
Includes
- Manoeuvring signals (Rule 34a)
- Doubt signal — five short blasts
- Rule 35 — vessel underway in fog
- Rule 35 — vessel not under command
Night Lights & Day Shapes 18 scenarios
The exam favourite — and the real-world headache. 18 night encounters drilled with realistic light arcs and arrangements until you call them at a glance.
Includes
- Power-driven vessel
- Sailing vessel
- Vessel at anchor
- Vessel constrained by draught
- Vessel restricted in ability to manoeuvre
- Vessel not under command
- Towing — long tow
- Fishing — trawling
- Pilot vessel
- Hovercraft, WIG, seaplane, dredger, mine-clearance
VHF · SRC Radio Simulator Press the red button — safely. 15 radio scenarios.
A clickable VHF set with a working DSC keypad. Build a Mayday call line by line, fire a real DSC distress alert (with no coastguard waking up), switch working channels, handle a Mayday Relay. Voice procedures and DSC sequences in one place — the same procedures the SRC certificate exam asks for.
Mayday voice call
Build the full Mayday distress call from scratch — initial call, position, nature of distress, persons on board.
DSC distress alert
Send a digital selective calling (DSC) distress alert and follow it up with the voice broadcast on Ch 16.
DSC distress with nature
Same alert, but pick the correct nature-of-distress code — fire, flooding, sinking, abandoning, MOB.
Mayday Relay
You overhear a vessel in distress that can't reach the coast station — relay correctly.
Pan-Pan urgency
Urgent but not life-threatening: medical advice, drifting, lost rudder. Practise the right register.
Pan-Pan — engine failure
A real-world urgency scenario from start to finish.
Sécurité — safety call
Broadcasting safety information — gale warning, navigation hazard, SAR exercise.
Routine ship-to-shore
Calling a marina, requesting berthing, weather, port control.
Marina Auda
A complete real-port routine procedure: hailing, working channel, info exchange.
Ship-to-ship working
Switching to a working channel, exchanging passing intentions, and signing off cleanly.
Receive a routine call
You're not always the caller — practise responding to incoming traffic.
Receive a DSC alert
A DSC call comes in. Acknowledge correctly, switch to the right channel.
Receive a DSC distress
A distress alert hits your DSC. What you say next matters.
DSC routine
Routine digital selective calling — request a working channel via DSC.
Free explore mode
No script — practise any procedure on demand for revision.
Daily habit Seamind Sharpener — keep the edge on rest days
Simulator training builds the skill. The Seamind Sharpener tools keep it sharp between sessions — five minutes a day, no setup needed.
Daily Challenge — unlimited retries
Answer until you have 10 correct.
Maritime Crosswords — unlimited
The full random-puzzle archive at your fingertips — maritime vocabulary built one clue at a time.
Weekly bonus question
A friendly weekly email with a maritime question to answer right there — and a reminder to drop by the site for a quiz. Correct answers earn bonus points on the leaderboard.
Built for Sailors who want the call right the first time
Yacht skippers
Day Skipper through Yachtmaster — practise rules in safe water before you need them in real water.
Cadets & students
Maritime academy COLREG and SRC modules — examined material drilled scenario-by-scenario.
Deck officers
STCW refresher prep, certificate revalidation, watchkeeping decision rehearsal.
SRC candidates
Walk into the VHF SRC exam having already built every Mayday and DSC sequence — repeatedly.
4.5 out of 5
Based on 16 reviews on
Trustpilot
“Read 100 pages, take a 20-minute quiz and get certified while learning.”
“Perfect. Professional.”
“Great online learning tool for the VHF/SRC licence with friendly support.”
“The course was wonderful. A real internationally accepted licence with fast service.”
“Great course, good communication, quick certificate delivery.”
Questions Frequently asked
How does the 3-day free trial work?
You get full access to every simulator and Premium perk for 3 days. We ask for a card up-front (Stripe), but nothing is charged until day 3 ends. Cancel anytime in those 3 days from the Stripe billing portal and you won't be charged a cent. The trial is available once per user — if you've already had a Premium subscription, payment starts immediately.
Will I get an official certificate from this membership?
No — this membership unlocks the simulators and Seamind Sharpener tools so you can train. Official certificates (VHF SRC, Skipper Refresher) are issued only with the corresponding one-time course purchase. The good news: any exam you pass and any simulator you complete while on Premium counts retroactively if you later buy the course — no progress wasted.
Do the simulators really teach COLREG, or are they quizzes?
Decision-based scenarios. You see the encounter — bearing, range, lights, AIS data, sound — choose the correct action under the relevant rule, and get feedback citing the rule. The COLREG simulator covers Rules 2, 5–10, 12–19, 23–30, 34 and 35; the VHF simulator covers the GMDSS / SRC voice and DSC procedures.
Maritime education is moving online fast — and the IMO actively recommends and supports this shift toward modern, accessible, high-quality training. Online simulators are now a recognised step in that direction.
And this kind of training fits everyone who operates on the water — from yacht skippers to officers on big ships. The rules are the same for all of us, and the sea is shared.
Maritime education is moving online fast — and the IMO actively recommends and supports this shift toward modern, accessible, high-quality training. Online simulators are now a recognised step in that direction.
And this kind of training fits everyone who operates on the water — from yacht skippers to officers on big ships. The rules are the same for all of us, and the sea is shared.
Can I cancel?
Yes — anytime, from the Stripe billing portal. You keep access until the end of the period you already paid for. No phone calls, no retention questions.
Monthly or annual?
Annual is roughly 34% cheaper than 12 monthly payments. Pick monthly if you want the lowest commitment, annual if you know you'll train consistently — the simulators reward repetition.
What devices does it work on?
Anywhere with a modern browser — desktop, laptop, tablet, phone. The bridge simulator is best on a screen wide enough to see lights and AIS targets clearly, so we recommend tablet-or-larger for the COLREG scenarios. The VHF simulator works comfortably on a phone.
Is content updated?
Yes — as a Premium member you get every addition automatically, no extra cost.
Start training today
Practise the encounters that matter — until the right call is automatic.
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