MARINELIGHTS
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Marine LightsNavigation lights and buoys · COLREG · ICS · IALA

See every light
as it looks at night.

You cannot learn navigation lights from a table. Marine Lights shows each configuration the way you see it from the bridge: on a 3D model, from any bearing, at a distance you choose.

Download on the App Store$5.99One-time purchase · no subscription
42light configurations
303D ship models
200test questions
12languages
  • Made for iPhoneCompatible with iPhone
  • Optimized for iPadDesigned for iPad
  • On MacMac with Apple silicon · Designed for iPad
  • On Apple Vision ProCompatible iPad app on visionOS
Marine Lights — Start

Explore a vessel in 3D

Read the lights
from where you stand.

A 110 m ferry under way at night, seen from its port bow, as in the app. Turn the ship and the lights you see change with the sectors, exactly as they would on the water.

Marine Lights 3D scene: ferry under way at night seen from the port bow, with two white masthead lights and the red port sidelight
Ferry · under way · 110 m · ≈ 0.10 NM
  1. 1Forward masthead lightWhite, shows over 225° ahead. Lower and further forward.
  2. 2After masthead lightWhite and higher. With the forward light, it shows the ship's heading.
  3. 3Port sidelightRed, from dead ahead to 22.5° abaft the port beam.
  4. 4Glow and reflectionsEach lamp lights the hull and the water around it.
Orbit 360°Day / nightBlack board view0.1 – 3 NM

Marine Lights · Fleet

Meet all 30 models.

From sailing boats and fishing vessels to passenger ships and towing combinations. These are the models used in Marine Lights.

  1. Container ship

    Container ship

  2. Sailing yacht

    Sailing yacht

  3. Motorboat

    Motorboat

  4. Bulk carrier

    Bulk carrier

  5. Ferry

    Ferry

  6. Tug

    Tug

  7. Trawler

    Trawler

  8. Pilot boat

    Pilot boat

  9. Offshore vessel

    Offshore vessel

  10. Coaster

    Coaster

  11. Fishing boat

    Fishing boat

  12. Barge

    Barge

  13. Dinghy

    Dinghy

  14. RIB

    RIB

  15. Dredger

    Dredger

  16. Minesweeper

    Minesweeper

  17. Hovercraft

    Hovercraft

  18. Purse seiner

    Purse seiner

  19. Object under tow

    Object under tow

  20. WIG craft

    WIG craft

  21. Tanker

    Tanker

  22. Cruise ship

    Cruise ship

  23. Rowing boat

    Rowing boat

  24. Seaplane

    Seaplane

  25. Push tow

    Push tow

  26. Tug with a barge

    Tug with a barge

  27. Tug · long tow

    Tug · long tow

  28. Towing alongside

    Towing alongside

  29. Tug with an object

    Tug with an object

  30. Passenger ship

    Passenger ship

What's inside

Lights, marks, buoys and tests

Lights in 3D42 COLREG configurations in 7 categories on 30 ship models.Marks26 flags, 8 day shapes and 14 sound signals you can hear.Buoys12 IALA marks with day shape and light rhythm.Tests200 questions, a daily quiz and a repeat of your mistakes.
Marine Lights — 3D scene

01 · Lights in 3D

Turn the ship. Watch the sectors change.

Orbit each vessel, switch day and night, and move out smoothly to 3 nautical miles. A black board drops the hull and leaves only the lights: exactly what you see after dark.

Power-drivenSail and oarsTowing and pushingFishingRestricted capabilityAnchored and agroundPilot and others
Marine Lights — Flags

02 · Marks

Flags, shapes and sound signals.

Every International Code of Signals flag with its letter, radio word and Morse code. Day shapes with their rule number. Sound signals you can play, with the rhythm written out.

26ICS flags
8day shapes
14sound signals
Marine Lights — Buoys

03 · Buoys

Know which side to pass.

12 IALA marks, each with its daytime shape and its light rhythm on a timeline. Diagrams show how to pass cardinal marks and read Region A lateral marks.

  • Cardinal, lateral and other marks
  • Animated light characteristics, day and night
Marine Lights — Tests

04 · Tests

Find out whether you really know.

200 questions with a score per category. Sector questions reveal the true arcs only after you answer.

  • Daily quiz: 5 questions, about 2 minutes
  • Repeat your mistakes until they stick
  • Local reminders on the days and time you choose

Screens

A closer look

Marine Lights — Start
Marine Lights — Light categories
Marine Lights — 3D scene
Marine Lights — Flags
Marine Lights — Buoys
Marine Lights — Tests
12 interface languagesInterface and content follow your device language; you can change it any time in Settings. English · Polski · Deutsch · Français · Italiano · Español · Dansk · Norsk bokmål · Português · Svenska · Suomi · Ελληνικά.
DevicesRequires iOS 17 or later. Works fully offline.
Private by designNo account, no ads, no analytics. Progress stays on your device. Privacy →

Questions

Does it work offline?
Yes. All lights, models, flags, sounds and tests are inside the app. Only links to external sources need a connection.
Why do the lights look larger than in reality?
The glow is enlarged so you can read it on a phone. It does not show optical range, intensity or weather.
Which rules does it follow?
COLREG for lights and shapes, the International Code of Signals for flags, and IALA Region A for buoys.
All questions and contact

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