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Mixed (everything)Random mix from every topic512 questionsAll COLREGQuestions drawn from all 41 International COLREG rules209 questionsAll IALA buoyageLateral, cardinal, isolated-danger, safe-water, special58 questionsAll lights & shapesRules 20–31 + light-recognition stimuli101 questionsAll sound signalsRules 32–37 + sound-recognition stimuli49 questionsAll GMDSSAll 14 GMDSS modules140 questions

COLREG RulesInternational Regulations for Preventing Collisions at Sea209 questionsIALA BuoyageMaritime buoyage system and navigation marks58 questionsGMDSSGlobal Maritime Distress and Safety System: 14 study modules on sea areas, equ…140 questions

Rule 1 — ApplicationCOLREG applies to all vessels on the high seas and in connected waters navigab…2 questionsRule 2 — ResponsibilityNothing in these Rules shall exonerate any vessel from the consequences of neg…2 questionsRule 3 — General DefinitionsDefines key terms used throughout the COLREGs including vessel, power-driven v…2 questionsRule 4 — ApplicationRules in Section I apply in any condition of visibility.2 questionsRule 5 — Look-outKeep watch at all times with your eyes and ears, and use radar, AIS and every …4 questionsRule 6 — Safe SpeedAlways go slowly enough that you can still avoid a collision and stop in time,…4 questionsRule 7 — Risk of CollisionEvery vessel shall use all available means to determine if risk of collision e…4 questionsRule 8 — Action to Avoid CollisionWhen you act to avoid a collision, act early and make the change large enough …4 questionsRule 9 — Narrow ChannelsIn a narrow channel, stay on the starboard side as far as it is safe, and don'…3 questionsRule 10 — Traffic Separation SchemesIn a traffic separation scheme, follow your lane in the direction of the traff…4 questionsRule 11 — ApplicationRules 11 to 18 cover vessels that can see each other with their own eyes, not …2 questionsRule 12 — Sailing VesselsWhen two sailing vessels approach, the one with wind on port side keeps clear.…2 questionsRule 13 — OvertakingIf you are overtaking, it is your job to keep clear of the vessel ahead until …3 questionsRule 14 — Head-on SituationWhen two power-driven vessels in sight meet on reciprocal or nearly reciprocal…3 questionsRule 15 — Crossing SituationWhen two power-driven vessels are crossing, the vessel which has the other on …3 questionsRule 16 — Action by Give-way VesselAs the give-way vessel, make your move early and make it big, so you pass at a…1 questionRule 17 — Action by Stand-on VesselThe stand-on vessel shall keep her course and speed, but may take action when …2 questionsRule 18 — Responsibilities Between VesselsRule 18 sets the basic responsibilities between vessel types. Constrained-by-d…4 questionsRule 19 — Conduct of Vessels in Restricted VisibilityRule 19 governs vessels not in sight of one another in or near restricted visi…4 questionsRule 20 — Application (Lights)Show your navigation lights between sunset and sunrise and whenever visibility…1 questionRule 21 — Definitions (Lights)Defines masthead light, sidelights, sternlight, towing light, all-round light …1 questionRule 22 — Visibility of LightsSpecifies minimum visibility ranges for lights based on vessel length.1 questionRule 23 — Power-driven Vessels UnderwayPower-driven vessels underway shall exhibit masthead light(s), sidelights, and…13 questionsRule 24 — Towing and PushingVessels towing or pushing display additional masthead lights and a yellow towi…7 questionsRule 25 — Sailing Vessels Underway and Vessels Under OarsSailing vessels show sidelights and sternlight. May optionally show red over g…13 questionsRule 26 — Fishing VesselsFishing vessels show green over white when trawling, red over white for other …21 questionsRule 27 — Vessels Not Under Command or Restricted in Ability to ManoeuvreNUC shows two red all-round lights vertically. RAM shows red-white-red all-rou…17 questionsRule 28 — Vessels Constrained by Their DraughtA vessel limited by her draught can add three red all-round lights, one above …4 questionsRule 29 — Pilot VesselsA pilot vessel on duty shows white over red all-round lights at the masthead. …5 questionsRule 30 — Anchored Vessels and Vessels AgroundAnchored vessels show an all-round white light forward and another aft (lower)…17 questionsRule 31 — SeaplanesWhere it is impracticable for a seaplane to exhibit lights of the exact charac…1 questionRule 32 — Definitions (Sound Signals)Whistle = any Annex III-compliant sound appliance. Short blast ≈ 1 s. Prolonge…3 questionsRule 33 — Equipment for Sound SignalsWhistle from 12 m, bell added from 20 m, gong added from 100 m — and the gong'…4 questionsRule 34 — Manoeuvring and Warning SignalsOne short blast means starboard, two means port, three means astern propulsion…15 questionsRule 35 — Sound Signals in Restricted VisibilityIn restricted visibility, power-driven vessels making way sound one prolonged …18 questionsRule 36 — Signals to Attract AttentionTo get another vessel's attention you can use a light or sound signal, as long…3 questionsRule 37 — Distress SignalsWhen in distress and requiring assistance, vessels shall use the signals descr…6 questionsRule 38 — ExemptionsVessels which comply with earlier regulations may be exempted from certain req…1 questionRule 39 — Definitions (Verification of Compliance)Defines the terms used by Part F: audit, Audit Scheme, Code for Implementation…1 questionRule 40 — Application (Verification of Compliance)Contracting Parties shall use the Code for Implementation when carrying out th…1 questionRule 41 — Verification of ComplianceEvery Contracting Party is subject to periodic IMO audits verifying its compli…1 questionIALA Lateral Marks (Region A & B)Lateral marks indicate port and starboard sides of channels. Region A: red to …10 questionsIALA Cardinal MarksCardinal marks indicate the direction of safe water relative to the mark using…10 questionsIALA Isolated Danger MarksAn isolated danger mark is on or near a danger with navigable water around it.…9 questionsIALA Safe Water MarksIndicate navigable water all around. Red and white vertical stripes with a sin…8 questionsIALA Special MarksYellow marks indicating special areas such as ODAS, traffic separation, milita…10 questionsIALA Emergency Wreck Marking BuoyMarks new dangers, including wrecks. 1 s blue + 0.5 s darkness + 1 s yellow + …11 questions

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