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Yachtmaster revision module 4 of 20
Rescue procedures, distress signals, personal safety equipment, fire precautions, and stability/heavy-weather awareness.
14 guided lessons · 22 practice questions · 23 flashcards
Lesson 1 of 14
What you will learn
Set a personal-safety policy for a coastal passage that combines correct lifejacket fit, a boat-specific clipping route and disciplined kill-cord use.
Personal equipment works as a system. Buoyancy rating, fit, clothing, tether length, attachment route, crew behaviour and maintenance all affect whether it protects somebody in the real emergency.
Level 150 lifejackets are intended for coastal and offshore use and are designed to help turn an unconscious wearer face-up. That performance still depends on the right size and buoyancy for the activity, a snug fit over the clothing actually worn, correctly adjusted crotch straps, serviceable condition and the maker's servicing schedule. Level 275 is aimed at extreme offshore conditions or heavy, air-retaining clothing; it is not automatically the safer choice for every passage.
A safety line connects a correctly fitted harness to a purpose-made strong point or jackstay. Agree the route before conditions worsen, clip on before leaving the protected area and use the shortest suitable tether. Guardrails are not harness attachment points, and jackstays should be kept close to the centreline where practicable. Remaining attached does not make immersion safe: a person dragged alongside can drown, so stop the vessel if a tethered person enters the water.
Where a kill cord is fitted, the driver wears it whenever the engine is running and tests it at the start of the day or session. Stop the engine before changing driver; attach the cord to the new driver before restarting. Do not lengthen it beyond the engine maker's arrangement or clip it to loose clothing that can pull free.
The skipper sets observable triggers rather than relying on 'clip on when it feels rough'. Darkness, reduced visibility, an exposed deck task, a reefing evolution, fatigue, a rising sea or a short-handed watch can all justify an earlier lifejacket and tether policy. Brief the route, strong points and response if somebody is left suspended or enters the water.
A two-person watch will round a headland after dark in a building sea. One person may need to reef while the other remains at the helm.
1. Fit
Check each lifejacket over the clothing being worn, including crotch straps, firing-head indicators, cylinder condition and service state.
2. Route
Choose purpose-made strong points and a jackstay route that reduces the chance of reaching the water; agree tether changes before anyone leaves the cockpit.
3. Brief
Name the trigger to clip on, the helm response to a fall, the recovery equipment and how one person will raise the alarm while controlling the yacht.
Sense check: A crew member should be able to explain where they will clip, why that tether length is suitable and what the helm will do if prevention fails.
Optional quick check
Section 1 of 14
Lesson 2 of 14
What you will learn
Select MAYDAY, PAN PAN or a safety message and lead the DSC-to-voice sequence without assuming one device guarantees contact or rescue.
The priority describes the real risk. MAYDAY is for grave and imminent danger requiring assistance; PAN PAN is an urgent concern about a person or vessel below that threshold.
For grave and imminent danger when assistance is required, send the VHF DSC distress alert on Channel 70 by pressing and holding the covered control until the set confirms it has sent. The alert identifies the vessel by MMSI and can include position and time when valid navigation data reaches the radio. It carries the selected nature of distress, or an undesignated distress if none was selected.
On receiving a DSC acknowledgement, or after about 15 seconds, transmit the voice MAYDAY call and message on Channel 16 when circumstances permit. Give MAYDAY three times, vessel name three times, call sign or other identity and MMSI, then repeat MAYDAY and state vessel identity, position, nature of distress, assistance required, people on board and other useful information before OVER.
PAN PAN is for an urgent concern about the safety of a person or vessel below the MAYDAY threshold. Current MCA small-boat guidance uses a DSC All Ships Urgency call with a nominated working channel, an announcement on Channel 16 and the full message on that working channel. Escalate to MAYDAY when the developing facts meet the distress threshold.
An EPIRB transmits a 406 MHz satellite distress alert; GNSS-equipped units can include position. A beacon carried on a UK-registered ship or watercraft must be registered with the UK Beacon Registry and kept current. A radar SART is a close-range locating aid. VHF range depends strongly on antenna height, so use complementary alerting and locating methods rather than treating any one device as a rescue guarantee.
Worked example
The yacht is taking water faster than the pumps can control it and the crew may have to abandon. A fixed VHF with valid position data and DSC is available.
Sense check: If the spoken message does not tell rescuers who, where, what is wrong, what help is needed and how many people are involved, it is not yet a useful MAYDAY message.
| Priority | Use it when | Initial route |
|---|---|---|
| MAYDAY | Grave and imminent danger; assistance required | DSC distress alert, then Channel 16 voice message |
| PAN PAN | Urgent safety concern below the MAYDAY threshold | DSC urgency announcement, Channel 16 call, then nominated working channel |
| Safety message | Navigational, weather or other safety information | Supported DSC safety procedure or Channel 16 call, then the directed channel |
A yacht initially reports engine failure by PAN PAN while clear of danger. The wind strengthens and the yacht begins closing a lee shore faster than the anchor plan can arrest.
1. Reassess
Use distance, drift, sea room, anchor effectiveness and time to danger rather than the label used in the first call.
2. Escalate
If the situation is now grave and imminent and assistance is required, send the distress alert and MAYDAY message with the changed facts.
3. Update
Give a fresh position, people on board, current control measures and the assistance needed; maintain the listening watch.
Sense check: A previous PAN PAN does not prevent escalation. The signal must match the present risk and time available.
Optional quick check
Section 2 of 14
Lesson 3 of 14
What you will learn
Use HM Coastguard services appropriately and distinguish transferable Boat Safety Scheme hazard controls from coastal certification requirements.
HM Coastguard coordinates maritime search and rescue and provides Maritime Safety Information. The Boat Safety Scheme is principally an inland-waterways system; its hazard controls are useful, but its certificate is not a coastal seaworthiness verdict.
HM Coastguard is the UK authority coordinating civil maritime search and rescue. At sea, use the appropriate DSC and VHF procedure; from shore, or when radio is unavailable, call 999 or 112 and ask for the Coastguard. Give identity, reliable position, the problem, people involved, assistance required and intentions. Calling early with an honest urgency assessment gives more options than waiting for control to be lost.
HM Coastguard also participates in the UK Maritime Safety Information service. Forecasts, gale warnings and navigational warnings are delivered by NAVTEX and scheduled or unscheduled radio broadcasts. An announcement on Channel 16 normally directs listeners to a working channel. A skipper still checks current forecasts, tides and warnings; hearing one broadcast does not replace a continuing appraisal.
A responsible shore contact can pass a useful overdue report, but this is not a Coastguard passage-plan filing service. Give the contact a route, people aboard, vessel details, communications, destination, latest arrival time and a clear escalation instruction. Tell them when the plan changes or the vessel arrives so they do not raise a false alarm.
The Boat Safety Scheme is a public-safety initiative for UK inland waterways and supporting navigation or harbour authorities. Its checks address hazards including fire, explosion, carbon monoxide, fuel, gas, electrical systems and pollution. Those hazard controls remain valuable on a coastal yacht, but BSS certification applicability is authority- and waterway-specific and does not replace coastal seaworthiness, statutory or coding duties, or a passage-specific inspection.
| System | What it contributes | What it does not replace |
|---|---|---|
| HM Coastguard | Search-and-rescue coordination and Maritime Safety Information | The skipper's distress assessment, navigation or onboard control |
| Shore contact | An overdue alarm route and useful vessel or passage details | A formal Coastguard tracking or passage-plan service |
| Boat Safety Scheme | Inland-waterway certification where required and transferable system-safety checks | A universal coastal certificate or seaworthiness assessment |
The engine has failed in deteriorating visibility. The yacht can still sail, but the safe-water route is narrowing and one crew member is becoming unwell.
1. Control
Protect the immediate navigation, maintain a lookout and establish a reliable position, drift and time to the next hazard.
2. Communicate
Use PAN PAN while the issue is urgent but below distress, giving the facts and assistance needed; escalate if grave and imminent danger develops.
3. Keep options
Use the latest MSI, alternative route, anchor plan and shore-contact update without treating any one service as control of the yacht.
Sense check: The call should leave the Coastguard able to understand the rate of deterioration, not merely that the skipper is worried.
Optional quick check
Section 3 of 14
Lesson 4 of 14
What you will learn
Choose an alerting or locating signal for the visibility and rescue stage, and use a current lawful route for unwanted flares.
Visual distress signals have different jobs. A rocket can alert at range, while a hand flare or smoke signal helps an approaching rescuer locate the casualty more precisely.
A compliant red rocket parachute flare fired vertically reaches at least 300 metres and burns bright red for at least 40 seconds, making it a long-range alerting signal. A compliant red hand flare burns for at least one minute and helps a known approaching rescuer pinpoint the casualty. A buoyant smoke signal emits highly visible smoke for at least three minutes in calm water and is primarily a daylight locating signal.
A white hand flare is not a recognised distress signal. It can warn another vessel of your presence or a collision risk, but it must not be mistaken for a red distress signal. Signal choice depends on day or night, visibility, whether help is already searching nearby and the vessel's actual carriage requirements.
Read the maker's instructions before an emergency, keep signals dry, accessible and in date, and fire them only when the emergency and chance of detection justify it. Performance figures describe the compliant product, not a guarantee that a particular observer will see it.
HM Coastguard stopped accepting unwanted flares from private individuals in January 2023. Use a confirmed third-party or take-back route such as a supplier, marina, liferaft service, local authority or suitable waste business. Never dismantle, test-fire or place unwanted pyrotechnics in ordinary waste.
| Signal | Primary job | Boundary |
|---|---|---|
| Red parachute rocket | Long-range alert | At least 300 m and 40 seconds for the compliant signal fired vertically |
| Red hand flare | Close-range location | Bright red for at least one minute |
| Buoyant orange smoke | Daylight location | Highly visible smoke for at least three minutes in calm water |
| White hand flare | Collision warning | Not a recognised distress signal |
The distress alert has been received and a rescue aircraft is searching nearby in daylight, but it has not yet located the yacht.
1. Confirm
Use radio information and visual contact to judge whether the rescuer is close enough for a locating signal to be useful.
2. Select
Choose daylight smoke or another directed locating signal instead of automatically firing a long-range rocket.
3. Operate
Follow the maker's instructions, keep people clear and continue communications as directed.
Sense check: The best signal is the one the intended rescuer can detect at that stage; firing every signal immediately can leave none for later location.
Optional quick check
Section 4 of 14
Lesson 5 of 14
What you will learn
Prevent common onboard fires and lead an alarm-isolate-escape decision using an extinguishing medium suited to the burning material.
The first fire-fighting decision is whether the fire can be attacked without losing the escape route. Raise the alarm and protect people before trying to save the yacht.
Prevention starts with maintained fuel and electrical systems, clean bilges, correctly installed gas equipment, secured flammable liquids and cooking that is never left unattended. Fire extinguishers must be visible and accessible from an escape route; keep a suitable fire blanket close to cooking facilities without placing it beyond the likely fire.
The fire triangle is a decision model: sustained fire needs fuel, heat and oxygen. Safely shutting off gas or fuel removes the fuel supply; cooling removes heat; closing a space or stopping ventilation can reduce oxygen. None of these actions is worth trapping a crew member or feeding the fire by opening the wrong hatch.
Use an extinguishing medium rated for the burning material. Water is for suitable Class A solid-material fires and must not be used on liquid, gas or electrical fires. Dry powder can cover several classes but creates residue, reduces visibility and can affect breathing. CO2 can work on some small Class B and live-electrical fires, but it disperses in the open and can create an asphyxiating atmosphere in a confined space. A fire blanket can control a small pan or cooking-oil fire when it can be applied from the escape side.
On discovering fire, shout the alarm, account for the crew and keep the escape route behind you. Stop engines, fuel, gas, electrical supply or ventilation only where safe and appropriate; attack with the correct equipment from a protected position. Send the distress alert early if people or vessel are in grave and imminent danger, and prepare to abandon if control is doubtful.
| Control | Useful when | Important limitation |
|---|---|---|
| Fuel shut-off | The supply can be reached safely | Do not pass the fire or delay escape |
| Water | Suitable Class A solid material | Never liquid, gas or electrical fires |
| Dry powder | A correctly rated multi-class extinguisher | Visibility, breathing and residue hazards |
| CO2 | Some small Class B or live-electrical fires | Dispersal and confined-space asphyxiation hazards |
| Fire blanket | A small cooking pan or clothing fire | Apply from the escape side without leaning into flame |
A small flame appears at the galley cooker. The gas shut-off is reachable without passing the fire and a fire blanket is beside the companionway.
1. Alarm
Call out, account for the crew and keep the companionway clear.
2. Isolate
If it remains safe, shut off the gas and avoid opening or ventilating a space in a way that feeds the fire.
3. Control or leave
Use the suitable blanket or extinguisher from the escape side; withdraw, call MAYDAY and prepare to abandon if control is doubtful.
Sense check: If reaching the shut-off or extinguisher means passing the fire, or smoke and heat are increasing, the attack plan has failed its safety check.
Optional quick check
Section 5 of 14
Lesson 6 of 14
What you will learn
Prepare the yacht for helicopter winching, follow the aircrew's course and speed, and handle a hi-line without securing it or taking a static shock.
A helicopter rescue is directed by the aircraft crew. The yacht provides a clear working area, obeys the requested motion and keeps every line and person free of obstructions.
Maintain the listening watch on Channel 16 or the frequency specified and repeat the aircraft's requested course, speed and working area. Clear loose gear before the helicopter arrives and keep unassigned people away from the winching area. Do not invent a universal heading or stop the vessel unless directed; the safe profile depends on the aircraft, wind, sea, yacht and casualty.
A hi-line is a light line used to guide the winchman or strop when the helicopter cannot hover directly overhead. Tend it, keep it clear of obstructions and feed or recover slack as directed. Never secure a hi-line or winch wire to the yacht and never wrap it around a person or hand.
The wire and the person being lowered may carry a dangerous static charge. Do not touch either until earthing or discharge has occurred and the aircrew or winchman directs contact. Do not assume one universal instruction to touch a particular part of the yacht first.
Once aboard, the winchman controls the transfer. Keep the working area clear, continue the requested course and speed, and report any fouled line or new hazard immediately. Never cut a fouled wire unless the helicopter crew directs it.
A rescue helicopter is approaching a yacht with one injured crew member. The aircraft asks for a steady course and says a hi-line will be used over the aft deck.
1. Confirm
Read back the requested course, speed, working area and any instructions about aerials, sails or lighting.
2. Clear
Secure loose gear, move unassigned people away and nominate one crew member to tend the hi-line.
3. Follow
Keep the line free, never make it fast, avoid contact until discharged or directed, and obey the winchman's transfer instructions.
Sense check: The yacht must not control the aircraft through a secured line; every part of the arrangement must allow the helicopter to move away immediately.
Optional quick check
Section 6 of 14
Lesson 7 of 14
What you will learn
Build and brief an accessible safety-equipment plan matched to the yacht, crew, operating area, passage and applicable rules.
A useful inventory is risk-based and usable under pressure. Equipment that is inappropriate, overdue, buried or unknown to the crew does not complete the plan.
Start with the yacht, number and needs of people aboard, operating area, distance from help, weather, water temperature, daylight, passage length and the rules that apply. A coastal plan may include correctly fitted lifejackets, suitable harnesses and tethers, alerting and locating methods, fire-fighting equipment, first aid, sound signalling, lighting, communications and a practical means of recovering a person from the water. The exact carriage requirement is not identical for every pleasure vessel or voyage.
For a UK pleasure vessel under 13.7 metres, a liferaft is not automatically mandatory, but the skipper should consider distance from other boats and emergency services, water temperature, weather and the consequences of fire or sinking. Choose, stow and service any raft for the actual people and passage; the available crew must be able to reach and launch it.
A grab bag supplements the particular raft pack. Prioritise raising and maintaining the alarm, helping rescuers locate the survivors, protection from exposure and medical needs, then food and water. It may include a registered EPIRB or PLB, waterproof handheld VHF, suitable signals, torch, thermal protection, first aid, medication, water and a safety knife. Reconcile the list with what the raft already carries.
The departure briefing shows where equipment is, who uses it and what triggers each emergency plan. Check dates, batteries, service indicators and physical access; practice person recovery and make sure someone other than the skipper can raise the alarm and control the yacht. Abandon only when remaining aboard is more dangerous and follow rescue-service direction where available.
| Function | Question to answer | Example evidence |
|---|---|---|
| Prevent | How do we stop separation, fire or flooding? | Fit, strong points, shut-offs, seacocks and checks |
| Alert | How will we tell somebody, from here? | DSC/VHF, registered beacon and backup method |
| Locate | How will a known rescuer find us? | Position, light, smoke, SART or beacon homing |
| Recover | Can this crew lift an incapacitated person? | Practiced yacht-specific recovery equipment |
| Survive | What protects people if the yacht is untenable? | Accessible raft, exposure protection and reconciled grab bag |
A family crew is preparing a cold-water coastal passage that will finish after dark. One person takes essential medication and only two people can helm confidently.
1. Match
Review passage risks, legal requirements, crew sizes, clothing, medical needs, communications coverage and recovery method.
2. Inspect
Check fit, condition, dates, charge, registration, service state and whether the least-strong crew member can reach and deploy the equipment.
3. Brief
Point to each critical item, assign alarm and recovery roles, and explain what changes the plan or triggers abandonment.
Sense check: Ask a crew member to locate the distress controls, fire equipment, first aid, recovery gear and grab bag without help. Any hesitation reveals a preparation gap.
Optional quick check
Section 7 of 14
Lesson 8 of 14
What you will learn
Command a parallel alarm, location, boat-control and recovery response, then lift an incapacitated casualty with a practiced yacht-specific system.
The first response must prevent the casualty being lost while the yacht comes under control. The manoeuvre is only one part of the problem; the crew must still approach safely, stop propeller risk and lift the person aboard.
Shout the alarm immediately, deploy buoyancy and a visible marker, and appoint one person to maintain continuous visual contact. Mark the electronic position when available, but do not let the button press delay flotation or the helm response. The casualty moves while the yacht moves; a stored coordinate is evidence, not the person.
The skipper controls speed and separation while assigning communications and preparing the recovery side. Use a manoeuvre practiced for the yacht, propulsion, sail plan, crew and conditions. An immediate turn or stop may retain contact; a Williamson turn is one recognised return towards a reciprocal track after visual contact is lost. No named manoeuvre guarantees that the yacht will return alongside the casualty.
Plan the final approach so the yacht does not drift or surge onto the casualty. Keep the propeller clear and use neutral or stop the engine when appropriate to the practiced method. Account for wind, waves, freeboard and the side or quarter from which the recovery equipment works; a successful return that places the casualty beneath the hull or beyond the lifting point is not a successful approach.
An incapacitated casualty needs a prepared lifting system such as suitable lifting gear, a strop or a recovery net, used within its limitations. Current MCA guidance says the recovery plan should be yacht-specific, consider available crew, freeboard, wind, waves and equipment limitations, and minimise injury against the vessel. Drills must prove that the real crew can rig and use the arrangement.
Handle a cold casualty gently and recover horizontally or near-horizontally where practicable; vertical recovery can increase cardiac risk in hypothermia. Protect from wind, insulate, monitor breathing and responsiveness, and seek urgent medical guidance. Do not rub the skin, apply strong direct heat or give a drink to somebody who is not fully conscious and able to swallow.
Worked example
A crew member falls overboard from a sailing yacht at night. Four people remain aboard, the engine is available and the casualty is still visible.
Sense check: If removing the strongest crew member from the helm leaves nobody able to control the yacht, the recovery plan has not allocated roles realistically.
The yacht carries a boarding ladder, but the least-mobile crew member could be unconscious and the freeboard is too high for two people to lift them by hand.
1. Model
Assume the casualty cannot help, the deck is moving and the strongest available crew member may be at the helm.
2. Rig
Choose a compatible strop, net or lifting purchase and identify the recovery point, load path and propeller boundary.
3. Prove
Practise the complete sequence with a safe representative load and revise anything the actual crew cannot deploy or control.
Sense check: A ladder is not an incapacitated-person recovery plan, and equipment that has never been rigged is not proven capacity.
Optional quick check
Section 8 of 14
Lesson 9 of 14
What you will learn
Recognise how topweight, loose liquids, shifting loads and downflooding erode stability, then act before a small ingress or list becomes unrecoverable.
Stability is not a permanent property guaranteed by the design label. Loading, free surface, open downflooding points, loose gear and water aboard can materially reduce the yacht's righting ability during the passage.
The yacht's weight acts down through its centre of gravity, G, while buoyancy acts up through the centre of the underwater volume, B. As a stable monohull heels, the underwater shape changes and the horizontal separation of those force lines forms a righting lever, GZ. The resulting righting moment depends on the yacht's displacement and GZ; it changes with heel and loading and cannot be inferred from the upright feel alone.
Weight added high raises G and can reduce the ability to recover from a knockdown. Loose gear can shift to the low side. Liquid with a free surface in a slack tank, bilge or on deck moves as the yacht heels and produces a virtual loss of stability. The effect depends on tank geometry, subdivision, displacement and the stability data—not simply whether a tank is 'half full'. Follow the yacht's loading and tank guidance rather than applying a universal full-or-empty rule.
Water aboard causes several connected problems: added weight, free surface, reduced freeboard and possible progressive downflooding. Keep bilge suctions, cockpit drains and freeing ports clear; investigate unexplained water immediately. Close openings marked to remain shut at sea and secure washboards or hatches before rough conditions, while preserving the ventilation or system openings that must remain functional.
Seaworthiness is a continuing state. Secure heavy items for large heel angles, inspect seacocks, hoses and skin fittings, keep suitable bungs accessible, and know the bilge-pump limitations. A rising bilge level, new list, slower roll, blocked drain or water near an off-centre opening is evidence to reduce load, control ingress, change the plan and seek help before the margin disappears.
Worked example
A small leak adds one litre of water every ten seconds. It looks minor during a quick bilge inspection, but the rate continues unnoticed for three hours.
Sense check: A low instantaneous flow can still consume stability and freeboard rapidly when time is ignored. Always convert an observed rate into accumulation over the remaining passage.
| Evidence | Why it matters | Immediate question |
|---|---|---|
| New water in the bilge | Added weight and free surface | Where is it entering, at what rate, and can pumps keep up? |
| Heavy item moved high | Raised centre of gravity | Can it be removed, lowered or secured within the yacht's loading guidance? |
| Blocked cockpit drain | Trapped water and reduced freeboard | Can it be cleared without exposing crew or opening a new flooding path? |
| Persistent list | Lost margin on one side | Is weight shifting, water accumulating or a compartment flooding? |
| Opening nearing the water | Progressive downflooding risk | Can it be secured now and the heel or route reduced? |
During a rough reach, the electric bilge pump cycles more often and the yacht has developed a slight list to starboard.
1. Measure
Check the level and rate, identify fresh or salt water where possible, and inspect likely hoses, seacocks, keel area, drains and downflooding points without exposing crew unnecessarily.
2. Control
Isolate or reduce the source, use suitable pumps, secure openings and shifting loads, and preserve electrical and manual pumping options.
3. Escalate
Recalculate time to danger, choose shelter or a safer course, and call early if ingress, stability or crew capacity is no longer controlled.
Sense check: If the crew cannot state whether the level is rising and how quickly, they do not yet know whether the pumps are winning.
Optional quick check
Section 9 of 14
Lesson 10 of 14
What you will learn
Make an early heavy-weather command decision using forecast, sea-room, yacht, crew and observed-sea evidence instead of relying on a named tactic or confidence alone.
The safest heavy-weather action is often taken before the yacht is committed. Reduce exposure, preserve escape routes and define change triggers while the crew still has capacity.
Start by avoiding unnecessary exposure. Compare the latest forecast and observed trend with tide races, overfalls, rapidly shoaling water, headlands, lee shores, daylight, bolt-holes and the return point. Wind against current, increasing wind, confused seas and steeply shoaling ground can create dangerous breaking waves even when the broad forecast number seems familiar.
Prepare before the threshold: reduce sail while the crew can still work securely, rig the boat-specific clipping route, secure heavy and loose gear, close vulnerable downflooding openings, check bilges and drains, prepare steering and communications backups, feed the crew and state the next diversion or assistance trigger. 'Reef early' is useful only when it becomes a concrete trigger and task plan.
Several tactics may be available after conditions worsen, but none produces one guaranteed attitude on every yacht. A heaving-to arrangement may involve a backed headsail, reduced mainsail or trysail and a tested helm position; the angle, drift, loads and protection depend on hull, keel, rig, sail balance, loading, wind, waves and sea room. Practise and record the yacht's behaviour in moderate conditions before relying on it offshore.
Lying ahull can expose a yacht beam-on to breaking seas and is not a generic safe default. Running off, streaming warps, using a purpose-designed drogue or deploying a sea anchor creates substantial loads and equipment-specific rigging, chafe and recovery problems. A drogue can add drag astern and help control speed or orientation, but it cannot guarantee prevention of broaching, pitch-poling, capsize or gear failure.
Crew condition is command evidence. Fear, seasickness, cold and fatigue reduce lookout, helming, communication and recovery capacity. Shorten watches, keep critical instructions explicit and reassess whether the remaining competent crew can still execute the plan. The MAIB Ocean Madam investigation shows why skipper confidence, assumptions about self-righting and an untested crew assessment cannot substitute for stability information, current weather and a conservative alternative plan.
| Evidence | Pre-declared trigger | Possible response |
|---|---|---|
| Forecast or observation worsens | Conditions exceed crew or yacht limit before the exposed leg | Delay, divert or take shelter |
| Heel or control rises | Reefing threshold reached while a safe evolution remains | Reduce sail and rebalance early |
| Broach tendency develops | Repeated loss of directional control | Reduce speed and reassess heading, sea room and suitable drag device |
| Crew capacity falls | No rested competent helm or safe deck team remains | Shorten exposure, divert or seek assistance |
| Ingress or openings threaten | Pumps lose ground or downflooding margin reduces | Control flooding and escalate without delay |
The next leg passes a headland during wind against tide. The inshore forecast now gives Force 6 with rougher conditions later, one experienced crew member is seasick and shelter is still available two hours before the tidal gate.
1. Appraise
Compare the latest forecast, observed sea, tidal stream, breaking-wave areas, daylight, yacht loading and remaining competent crew with the planned limits.
2. Preserve
Decide while shelter and time remain; reduce sail, secure the yacht and name the observation that triggers delay, diversion or assistance.
3. Communicate
Brief the crew on the chosen route, watch plan, clipping policy, downflooding controls and what evidence will cause the plan to change again.
Sense check: A plan that depends on reaching the headland before deciding has already spent the safest decision point.
Optional quick check
Section 10 of 14
Lesson 11 of 14
What you will learn
Turn vessel, crew, weather and route evidence into explicit departure gates, named owners and early change triggers rather than completing an equipment tour.
A Yachtmaster safety check is a command decision. The skipper must decide whether the vessel and crew can control the credible failures on this passage, and what evidence would make departure or continuation indefensible.
Start with the actual operation: route exposure, daylight, tidal constraints, forecast and observed weather, sea room, diversion points, crew capability and the time for help to arrive. Then examine the barriers that keep those hazards controlled—watertight integrity, steering, propulsion, power, bilge systems, fire detection and isolation, personal safety equipment, communications, navigation, recovery and survival equipment.
Convert concerns into gates that can be checked. A gate needs evidence, an owner and an action if it fails. ‘The batteries should be fine’ is not a gate; a measured state, a charging check, an independent handheld and a latest decision time are. ‘The crew understand’ is not evidence; ask another person to locate position, stop the vessel, operate the distress control and identify the recovery equipment without prompting.
Look for common causes. A weak service battery can remove the fixed VHF, plotter, lights and electric bilge pump together. A liferaft buried below stores may exist on an inventory but be unreachable through smoke, flooding or heel. Several individually tolerable defects can therefore create one unacceptable loss of control. For stability, a free-surface penalty depends on tank geometry, filling state, liquid breadth and subdivision rather than one universal ‘half-full’ rule.
Record the operational consequence of each defect. The response may be repair, a different route, daylight-only operation, an extra competent crew member, a lower weather limit, an accessible independent backup or no departure. A formal minimum and a defensible command decision are different questions; this module cannot determine the legal or practical answer for an unidentified vessel and voyage.
Worked example
The battery reads normally at rest but voltage falls sharply when navigation lights, VHF and the electric pump are loaded together.
Sense check: If one fault can remove several barriers at once, the skipper must assess the combined loss rather than approving each item separately.
| Evidence | Gate | Action if it fails |
|---|---|---|
| Loaded electrical and charging check | Essential services and independent alerting remain available | Repair, reduce exposure or do not depart |
| Crew demonstration | Another person can stop, locate, alert and start recovery | Rebrief, practice or add competent support |
| Forecast, observation and route margin | Weather and arrival remain inside stated limits | Delay, divert or select the safer route |
| Access under heel, darkness, smoke or water | Critical equipment remains reachable and deployable | Restow, provide an alternative or reject the plan |
A 40-mile night passage has a narrowing tidal gate. One crew member is new to the yacht, the service battery has been slow to recover, the primary bilge-pump switch works intermittently and stronger headwinds are forecast near the destination.
1. State the exposure
Name the night, weather, lee-shore, tidal-gate and reduced-crew-capacity consequences before inspecting individual equipment.
2. Set evidence gates
Require a repeatable power check, a working manual and primary dewatering route, a demonstrated distress and position report, and a latest departure or diversion time.
3. Challenge common causes
Ask which navigation, lighting, pumping and communication functions share the suspect battery or the same inaccessible compartment.
4. Decide and brief
Repair, re-route, delay or cancel before the tidal gate forces the choice; tell the crew which measured change will reopen or close the plan.
Sense check: A crew member should be able to say what must be true before departure, who verifies it and which failed gate ends the plan.
Optional quick check
Section 11 of 14
Lesson 12 of 14
What you will learn
Control a developing multi-system emergency by preserving vessel control, assigning concurrent roles, reporting trends and setting distress, diversion and abandonment triggers early.
Emergencies interact. Flooding can remove electrical power; injury can remove the only competent operator; fire can block the radio or escape route. The command task is to stabilise life threat and vessel control while preventing the next failure.
Begin with the action that preserves options: slow or stop, create sea room, heave-to where the tested vessel and conditions permit, anchor where appropriate, isolate fuel or electricity, close openings or change course. The exact action is vessel- and situation-specific, but detailed diagnosis must not consume the remaining margin to danger.
Keep four functions explicitly owned: control of the vessel, control of the immediate emergency, navigation and hazard monitoring, and communications and log. A small crew may combine roles, but no function disappears because there are too few people. Give short instructions and request closed-loop reports such as water rising or falling, fire contained or spreading, casualty responsive or deteriorating, voltage stable or falling, and distance to danger.
Escalate from the real risk and trend. MAYDAY is used for grave and imminent danger requiring assistance; PAN PAN is for an urgent safety concern below that threshold. Do not delay an appropriate alert until every cause is known. Current MCA small-boat guidance uses DSC followed by the prescribed voice sequence, while other available beacons and locating aids complement rather than replace the spoken situation update.
After the first problem is controlled, reappraise the whole yacht: stability, watertight integrity, fire, power, propulsion, steering, navigation, communications, crew capacity, weather and destination. A pump keeping pace at one moment is not recovery if the battery is still falling or the route is closing. Finish the brief with the next observation time and the trigger for changing plan.
Worked example
Water rises two centimetres in five minutes with the electric pump running, then rises another three centimetres in the next five minutes as voltage continues to fall.
Sense check: A response that names equipment but does not say whether water is rising or falling cannot show that the emergency is being controlled.
| Function | Useful report | Trigger example |
|---|---|---|
| Vessel control | Heading, speed and sea room stable | Loss of steerage or clearing margin |
| Flooding | Water level falling over the stated interval | Rise continues after independent dewatering |
| Power | Loaded voltage and charging trend | Loss of pumps, lights, navigation or fixed VHF |
| Casualty | Responsiveness, breathing and bleeding trend | Deterioration or loss of the only competent operator |
| Communications | Alert sent, acknowledged and updated | No acknowledgement or worsening danger |
At night the primary electric pump is running but bilge water is still rising. Battery voltage is falling, the engineer has injured a hand and the yacht is closing a lee shore in worsening visibility.
1. Preserve control
Create sea room or otherwise reduce the immediate navigation threat while keeping one named person responsible for the helm and hazards.
2. Attack and measure
Find and reduce ingress where safe, start independent dewatering, protect watertight boundaries and report water level as a trend rather than ‘pump on’.
3. Protect alerting
Move to independent communications and position sources before the main supply fails; send the appropriate alert early enough for it to help.
4. Prepare the next state
Treat the injury, ready survival and recovery equipment, and define the point at which diversion, assistance or abandonment preparation escalates.
Sense check: The response is not complete until somebody owns the vessel, water, position, communications and casualty, and each can report a trend that changes the decision.
Optional quick check
Section 12 of 14
Lesson 13 of 14
What you will learn
Structure a safety response as an immediate command, evidence check, delegated brief, operating margin and change trigger while keeping theory separate from demonstrated skippering competence.
The RYA describes Yachtmaster Offshore as a practical examination of skippering, boat handling, seamanship, navigation, safety awareness and related knowledge. A revision answer can rehearse the decision structure, but it cannot demonstrate competence aboard.
A strong response begins with what the skipper will do now to protect life and retain control. It then names the evidence that supports the decision, the uncertainty that remains, the person responsible for each concurrent task, and the point at which the plan changes. Quoting equipment or a memorised manoeuvre without showing control is not a Yachtmaster-level answer.
Use genuinely independent evidence. Position, course over ground and cross-track error may all depend on the same GNSS input. A fixed VHF, plotter and electric pump may depend on one battery. State what could fail together, which independent observation or supply challenges it, and how much time or sea room remains. Heavy-weather choices remain equally conditional: none can promise to prevent broaching, pitch-poling, capsize, or gear failure.
Brief in short operational language: who has the helm, who monitors the casualty or hazard, who navigates, who communicates, what each reports and when. Closed-loop confirmation matters because a spoken instruction is not complete merely because the skipper has said it.
This companion supports self-guided revision. It does not replace the recognised syllabus and logbook, practical instruction, first-aid or radio certification, vessel-specific drills, current official guidance or the examiner's assessment on a suitable seaworthy yacht.
| Answer element | Weak response | Operational response |
|---|---|---|
| Command | Deal with the injury | Name the first vessel-control and casualty action |
| Evidence | The plotter looks safe | State independent position, trend and shared failure limits |
| Delegation | Everyone helps | Assign helm, casualty, navigation and communications |
| Margin | There is enough room | State distance, time, weather and crew-capacity margin |
| Trigger | Call if it gets worse | Define the measured change that escalates the plan |
A crew member is injured during a heavy-weather reef. The yacht remains close-hauled towards a lee shore, the injured person was the navigator and the remaining crew have mixed experience.
1. Immediate command
Reduce the developing navigation and sail-handling threat using a tested, vessel-appropriate action that preserves sea room and crew safety.
2. Delegate
Keep helm, casualty care, navigation and communications explicitly owned; combine roles only after saying how the omitted function remains covered.
3. Check margin
State distance and time to danger, weather trend, crew capacity and the reliability of the remaining position and communication sources.
4. Set the trigger
Name the casualty, vessel, weather or navigation change that causes PAN PAN, MAYDAY, diversion or a different control action.
Sense check: Another crew member should be able to act on the brief without inventing the priority, safe direction or escalation point.
Optional quick check
Section 13 of 14
Lesson 14 of 14
What you will learn
Challenge a time-pressured departure when safety barriers conflict, then defend the safer decision with evidence, crew capability and an explicit route to reconsideration.
A difficult command decision often contains no single dramatic failure. The Yachtmaster task is to recognise when several degraded margins combine, resist schedule pressure and make the reversible safer option visible.
The presence of equipment does not prove that it is usable. Ask whether the raft can be deployed from its stowage, whether the recovery system can lift the actual casualty, whether a second person can send distress traffic, whether the independent radio has charged batteries, and whether the yacht's essential services survive a common power loss.
Use conditions and exceptions rather than absolute rules. A defect may be tolerable on one short daylight operation with close support and unacceptable on an exposed night passage. The response must state which exposure changed, which control compensates, and who has verified it.
Schedule pressure is not safety evidence. A tidal gate, berth booking or crew commitment can make the decision harder, but it cannot restore a failed barrier. Preserve the option to delay, repair or choose a lower-exposure plan before departure converts a reversible problem into an emergency.
A good decision includes a route back to ‘go’. Record the repair or demonstration required, the revised forecast or daylight condition, the competent support needed and the latest time for reassessment. ‘No for now’ is more useful than an unexplained refusal because the crew can understand what evidence would change it.
Worked example
The crew offer to move the stores after departure so the yacht can still make the gate.
Sense check: A repair completed after the safe decision point cannot restore the margin already consumed while departing.
| Finding | Why it matters | Evidence before reconsidering |
|---|---|---|
| Liferaft beneath stores | Deployment may be blocked when time or access is lost | Clear route and demonstrated deployment plan |
| Uncharged handheld | Main power failure can remove both fixed and backup alerting | Charged, tested independent radio and batteries |
| One-person distress skill | Injury or overload can remove the only operator | Second person demonstrates position and distress sequence |
| Intermittent autopilot | Crew capacity and emergency workload assumptions are false | Repair or a revised watch and hand-steering plan |
The yacht is due to leave before a tidal gate. The liferaft is beneath stores, the only handheld VHF has not been charged, one crew member cannot demonstrate the DSC distress sequence, and the skipper plans to rely on an autopilot that has been intermittently dropping out.
1. Name the combined exposure
Night, time pressure, reduced crew capacity, inaccessible survival equipment and common reliance on the skipper make the defects interact.
2. Make the safe option explicit
Delay before the gate, clear and prove access, charge and test independent communications, practice the distress role and resolve or remove reliance on the autopilot.
3. Define reconsideration
Reassess only when the named equipment and crew demonstrations pass and the remaining weather, daylight and tidal margin still support the route.
4. Brief without blame
Explain that the decision responds to combined barriers and exposure, not to one person's confidence or the inconvenience of delay.
Sense check: If the plan depends on the skipper remaining uninjured and one electrical system remaining available, it lacks the resilience claimed by the inventory.
Optional quick check
Section 14 of 14