Free RYA SRC/VHF Exam Flashcards

Coverage of at least one VHF coast station providing continuous DSC alerting, as defined by the administration. It is a service-coverage definition, not a guaranteed 20–30 nautical-mile circle. The SRC focuses on non-SOLAS vessels using VHF/DSC in this environment.

A2 is MF coast-station continuous-DSC coverage outside A1. A3 excludes A1/A2 and uses a recognized mobile-satellite service supported by the ship earth station carried aboard. A4 is outside A1–A3. A3 is no longer simply Inmarsat coverage and A4 is not automatically every polar location.

The 406 MHz signal alerts the satellite distress system; 121.5 MHz supports local homing. Register the beacon and keep its details current. A return-link indication, where fitted, acknowledges alert receipt by the system—not a promise that a rescue unit has already arrived or launched.

Install and maintain the approved bracket and release system exactly as the manufacturer specifies. Check battery and release-unit expiry dates and perform prescribed self-tests. Do not secure its lanyard to a sinking vessel; during abandonment follow the instructions for attaching it to the survival craft or survivor.

It responds to X-band radar and produces a characteristic series of 12 marks; the display may widen into arcs and rings as range closes. Actual detection range depends on antenna height and conditions. It is a local locating aid, not the same as a satellite distress alert.

An AIS-SART transmits identity and GNSS-derived position on AIS channels, appearing on compatible equipment. IMO’s performance standard requires 96 hours of operation, not radar-style standby followed by a short response period. Deploy it according to its instructions with a clear antenna position.

NAVTEX automatically delivers maritime safety information. The international service uses 518 kHz in English; national services may use 490 kHz in the selected national language. Select appropriate stations and read relevant warnings; receiver coverage and service availability are not guaranteed everywhere.

B1 identifies the transmitter, B2 the subject and B3B4 the serial number. A, B, D and L cover essential navigation, weather and search-and-rescue information that must not be suppressed. Serial 00 is special priority handling; do not assume every 00 message generates the same audible alarm.

A ship identity normally starts with its three maritime identification digits (MID); a group identity begins 0 followed by MID; a coast identity begins 00 followed by MID. Each complete MMSI has nine digits. Other device identity structures exist, so this is not a classification rule for every radio beacon.

They identify the station and location sent with an alert. Enter the assigned MMSI correctly and verify the position source, displayed coordinates and time. If automatic position input fails, follow the equipment’s manual-update instructions; do not assume an old position remains safe to transmit.

Marine VHF is mainly line-of-sight: antenna height, obstructions and the radio path limit contact. More power can improve a weak signal but cannot guarantee reception beyond the radio horizon. An approximate range calculation is only a planning estimate, never proof that the Coastguard will hear a call.

Use the lowest power sufficient for reliable communication, subject to the channel’s restrictions and equipment settings. Low power is useful for nearby traffic; higher permitted power may be needed for range or distress. Do not treat every harbor call or every navigation-safety call as an unconditional 1 W rule.

Reduce it until background noise is heard, then increase just enough to suppress that noise. Excessive squelch can hide weak transmissions, including distress calls. Volume controls loudness; squelch controls the threshold at which received sound is opened.

It checks a priority channel, commonly Channel 16, while monitoring a selected working channel. The scan behavior depends on the radio. Learn the controls and limitations; dual watch does not excuse missing an assigned watch or transmitting over existing traffic.

Ships transmit on one frequency and receive on the paired coast-station frequency, so two ships normally cannot hear each other directly. A simplex channel uses the same frequency for transmission and reception and is suitable for permitted inter-ship traffic.

Channel 16, 156.800 MHz, carries voice distress, urgency, brief safety traffic and initial calling. Channel 70, 156.525 MHz, carries DSC digital signaling only. Move routine voice exchanges to an appropriate working channel; never attempt a voice conversation on 70.

Channel 6 supports designated inter-ship safety and coordinated search-and-rescue communications; Channel 13 is navigation-safety communication, particularly bridge-to-bridge. Use the channel assigned for the operation and local instructions, rather than assuming either is a universal private chat channel.

Channel 67 is associated with UK Coastguard safety communications, subject to local instructions. Channels such as 72 and 77 are used for appropriate inter-ship traffic. Listen, check local allocations and move when directed; international channel numbers do not make every use lawful in every location.

Channel 80 is paired: ship transmit 157.025 MHz and coast transmit 161.625 MHz. UK M1/37A uses 157.850 MHz and M2 uses 161.425 MHz for authorized local purposes. Check the marina or club’s published working channel; the private UK channels are not universally authorized abroad.

Select the intended MMSI and routine call type, propose an appropriate working channel where permitted, send the call and wait for the response. Follow the agreed channel for voice. Use the radio’s instructions and avoid repeated calls that interfere with other traffic.

Distress, urgency, safety, routine—in that order. Distress concerns grave and imminent danger requiring immediate assistance; urgency concerns an urgent safety message; safety carries important navigation or meteorological information. Choose from the actual facts, not the inconvenience of waiting.

If grave and imminent danger requires immediate assistance, use the protected distress control as trained and follow the radio’s press-and-hold instructions. Check position if time permits, then use Channel 16 for the voice distress message. Required button duration varies by equipment; do not assume a universal five seconds.

Note the identity and position, silence the audible alarm and listen on Channel 16. Normally allow the coast station to acknowledge by DSC; follow the prescribed voice-response and assistance procedure. Do not send a casual DSC acknowledgment that could stop the casualty’s alert sequence.

After the distress call and vessel identification, give position, nature of distress, help required, persons aboard and other useful information; end with OVER. MIPDANIO is a study aid for these elements. Speak clearly and provide the most urgent facts first if time is limited.

Immediately stop/reset the alert according to the radio instructions, using its self-cancel function if available. A prescribed power-cycle may be part of reset. Restore operation on Channel 16 and broadcast cancellation to All Stations with vessel identity, MMSI and alert time; notify the Coastguard and keep listening.

Listen, record the important facts and avoid interrupting distress traffic. Allow the appropriate coast station to respond; if no acknowledgment is heard, follow the trained acknowledgment/relay procedure and alert the Coastguard. Assess whether you can safely assist and communicate useful information.

When you learn of a distress situation requiring relay—for example, a casualty cannot transmit or its message is not reaching assistance. Contact the Coastguard or appropriate coast station with the known facts. Do not invent details or assume that a fixed number of minutes always requires an all-ships DSC relay.

It can create widespread repeated alerts and confusion. Use the prescribed relay procedure, normally contacting the Coastguard by voice or appropriate individual communication, and follow their directions. A voice MAYDAY RELAY and a DSC all-ships relay are not interchangeable actions.

The casualty station or station controlling distress traffic may impose silence with SEELONCE MAYDAY. The controlling station announces the end of distress traffic with SEELONCE FEENEE, identifying the casualty and time as required. Keep listening and do not resume routine traffic merely because the channel becomes quiet.

The station controlling distress traffic announces that distress traffic has ended or silence is no longer required, using the prescribed message. It releases the frequency for normal use. It is different from cancelling your own accidentally transmitted DSC alert.

For an urgent message about the safety of a vessel or person that does not meet the distress threshold. Give the called station, identification, position, problem and requested assistance. If the danger becomes grave and imminent, escalate to MAYDAY rather than preserving the original priority.

No. Choose urgency or distress according to the severity and immediate danger. Contact the Coastguard for medical assistance and give clear patient and vessel information. A person in grave and imminent danger may justify MAYDAY even if the vessel itself remains afloat and undamaged.

Announce important navigation or weather safety information and normally direct listeners to an appropriate working channel for the full message. MCA permits very brief safety communications on 16; “no safety content may ever be spoken on 16” is too absolute. Avoid blocking distress traffic.

DSC signals the priority and available identity/position, but voice explains the situation, assistance required and changing circumstances. Follow the equipment and taught procedure to move to the relevant voice channel. Keep listening for acknowledgment and instructions; do not assume a digital alert alone conveys every need.

Use the channel assigned by the coordinating station. Channel 16 remains central to VHF voice distress; Channel 6 can support designated on-scene inter-ship and aircraft communications. Follow coordination instructions instead of unilaterally moving all participants to a presumed SAR-only channel.

Age 16 or over plus one accepted route: an SRC course completion certificate, an existing RYA Restricted VHF certificate, or a suitable aviation radio operator certificate. Confirm eligibility and required documents with the center. The standard SRC course route is not the only route.

Portable authorized equipment used without being tied to one named vessel, within the licence’s territorial conditions. It does not carry an international vessel call sign and is not blanket authorization for overseas use. Read the current licence schedule and obtain foreign-authority guidance before operating abroad.

Distress rules allow the means necessary to obtain assistance. For ordinary operation, comply with the licence and qualified-operator or direct-supervision requirements. Do not delay an emergency call solely because the certificate holder is unavailable; the personal certificate and equipment licence remain distinct.

Do not disclose or exploit communications not intended for you except as authorized, including legitimate safety and distress handling. A transmission being receivable does not make its content public gossip. Keep information handling appropriate to the purpose and applicable rules.

They can divert rescue resources, obstruct real emergencies and breach radio law. Check current jurisdiction-specific enforcement rules rather than memorizing one penalty as universal. Promptly report and cancel an accidental alert; do not conceal it out of embarrassment.

ATIS identifies a transmitting station on participating European inland waterways, normally at the end of a voice transmission. AIS broadcasts vessel information through a different system. Obtain the assigned ATIS identity and licence authorization; UK Ofcom guidance does not permit ATIS operation in UK waters.

An Accounting Authority Identification Code identifies the accounting authority handling charges for maritime public correspondence. Check whether a coast station offers the service and follow its call and billing procedure. An AAIC is not an MMSI, vessel call sign or permission to occupy a distress channel.

Power, antenna connection, assigned identity, current position input, audio controls and the required watch. Use approved test functions rather than a real distress alert. Battery inspection, charging and self-test intervals follow the equipment instructions; a monthly schedule is not universal for every device.

Alfa and Juliett are the standardized spellings, alongside words such as X-ray and Quebec. Practice the whole alphabet when spelling a vessel name or call sign. Phonetics clarify letters; they do not change the actual identifier.

Speak digits separately and clearly using the standard procedure taught for the service; emphasize distinctions such as TREE, FOWER and NINER when needed. Include the coordinate units and hemispheres. Never let a remembered pronunciation substitute for checking the actual numbers.

Give latitude and longitude with degrees, minutes and N/S/E/W, or a true bearing and distance FROM a clearly identified charted reference. State the reference and units. “Two miles from the harbor” without direction may leave many possible positions.

OVER hands the conversation to the other station and expects a reply. OUT ends the exchange with no reply expected. Combining them gives contradictory instructions; choose the one that describes the intended next action.

ROGER confirms satisfactory receipt; WILCO means the message is understood and will be complied with. Neither should replace a requested readback of critical details. Do not say WILCO if you cannot safely or lawfully comply.

Use SAY AGAIN and specify the missing part, such as “Say again your position.” Read back critical information to confirm it. Do not guess an unclear coordinate, time or channel assignment.

How intelligible the received voice is, not merely how loud it sounds. A strong signal can still be distorted. Request a brief appropriate radio check on a permitted working channel and adjust controls; avoid occupying the distress channel with unnecessary tests.