Maritime Study Screens
Maritime Study Screens
Free professional lock screens and phone backgrounds for COLREGS, MARPOL, IALA buoyage, bridge watchkeeping, emergency procedures and oral exam preparation.
Turn your phone into a simple maritime revision tool. Designed for cadets, deck officers, yacht crew, workboat crew and anyone preparing for maritime exams.
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40 free screens
COLREGS Rule 1 — Application
Applies to all vessels on the high seas and connected navigable waters.
COLREGS Rule 2 — Responsibility
Nothing in these rules exonerates neglect of seamanship or ordinary practice.
COLREGS Rule 3 — General Definitions
Definitions for vessel types: power-driven, sailing, NUC, RAM and more.
COLREGS Rule 4 — Application
Rules in Section I apply in any condition of visibility.
COLREGS Rule 5 — Look-out
Every vessel shall at all times maintain a proper look-out by all available means.
COLREGS Rule 6 — Safe Speed
Six factors for safe speed — know them cold for your oral exam.
COLREGS Rule 7 — Risk of Collision
Bearing not appreciably changing? Assume risk of collision exists.
COLREGS Rule 8 — Action to Avoid Collision
Take early, positive and substantial action to ensure safe passing distance.
COLREGS Rule 9 — Narrow Channels
Keep near the outer limit on the vessel's starboard side of the channel.
COLREGS Rule 10 — Traffic Separation Schemes
TSS lane usage rules — proceed in the general direction of traffic flow.
COLREGS Rule 11 — Application
Rules in Section II apply to vessels in sight of one another.
COLREGS Rule 12 — Sailing Vessels
Vessel with wind on port side gives way to vessel with wind on starboard.
COLREGS Rule 13 — Overtaking
Any vessel overtaking another shall keep out of the way of the vessel being overtaken.
COLREGS Rule 14 — Head-on Situation
Both vessels alter course to starboard and pass port-to-port.
COLREGS Rule 15 — Crossing Situation
Give way to a vessel on your starboard side in a crossing situation.
COLREGS Rule 16 — Action by Give-way Vessel
Take early and substantial action to keep well clear of the stand-on vessel.
COLREGS Rule 17 — Action by Stand-on Vessel
Maintain course and speed. Be prepared to take action to avoid collision.
COLREGS Rule 18 — Responsibilities Between Vessels
Vessel hierarchy — NUC, RAM, fishing, sailing, power-driven. Know the order.
COLREGS Rule 19 — Restricted Visibility
Safe speed, sound signals and extreme caution when visibility is restricted.
COLREGS Rule 20 — Application of Lights
Rules for lights and shapes in Part C shall be complied with in all weathers.
COLREGS Rule 21 — Definitions of Lights
Masthead 225°, sidelights 112.5°, sternlight 135°, all-round 360°.
COLREGS Rule 22 — Visibility of Lights
Lights must be visible at prescribed ranges — masthead 6 NM, sidelights 3 NM.
COLREGS Rule 23 — Power-Driven Vessels Underway
Masthead light, sidelights and sternlight while underway.
COLREGS Rule 24 — Towing and Pushing
Show correct lights and shapes for towing or pushing — three masthead lights.
COLREGS Rule 25 — Sailing Vessels and Vessels Under Oars
Sidelights, sternlight and optional combined lantern for sailing vessels.
COLREGS Rule 26 — Fishing Vessels
Red over white at night. Two black cones apices together by day.
COLREGS Rule 27 — NUC and RAM
NUC: two red all-round lights. RAM: red-white-red vertical.
COLREGS Rule 28 — Vessels Constrained by Draught
Three all-round red lights in a vertical line plus a cylinder shape.
COLREGS Rule 29 — Pilot Vessels
White over red all-round lights — the distinguishing lights of a pilot vessel.
COLREGS Rule 30 — Anchored Vessels and Vessels Aground
Anchor: white lights. Aground: two red all-round lights plus anchor lights.
MARPOL Annex I — Prevention of Oil Pollution
Compliance, record keeping, equipment and procedures for oil pollution prevention.
MARPOL Annex II — Noxious Liquid Substances
Control of pollution by noxious liquid substances in bulk.
MARPOL Annex III — Harmful Substances in Packaged Form
Prevention of pollution by harmful substances carried by sea in packaged form.
MARPOL Annex IV — Prevention of Sewage Pollution
Sewage treatment process: collection, treatment, disinfection and discharge.
MARPOL Annex V — Prevention of Garbage Pollution
Segregate, record and dispose of waste responsibly. Plastics never at sea.
MARPOL Annex VI — Prevention of Air Pollution
SOx, NOx and PM limits — IMO 2020 sulphur cap and ECA compliance.
MARPOL Special Areas
Stricter discharge controls apply in designated sea areas worldwide.
Emission Control Areas (ECAs)
Meet stricter sulphur and air-emission limits when operating in ECAs.
Garbage Management Plan
Segregate, record and dispose of all waste categories responsibly.
Oil Record Book & SOPEP
Keep accurate oil records and be ready to respond to oil incidents.
How to Download & Use Your Study Screen
Choose a Maritime Study Screen, download it to your phone, then set it as your Lock Screen or Home Screen so key maritime rules are always close at hand.
Frequently Asked Questions
Study Every Time You Unlock Your Phone
Maritime Study Screens keep important rules, procedures and confidence reminders visible throughout your day. Designed to support revision for COLREGS, MARPOL, IALA buoyage, bridge watchkeeping, emergency procedures and oral exam preparation.
We created these free study screens as part of Maritime Exam Prep Pro's mission to make professional maritime exam preparation clearer, more structured and more accessible. No account required — just download and use.
Free study screens across 10 maritime topics
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