Coastal Skipper revision module 4 of 17
Safety
Rescue procedures, distress signals, personal safety equipment, fire precautions, and stability/heavy-weather awareness.
10 guided lessons · 22 practice questions · 20 flashcards
3 outcomes · self-guided revision
- Explain rescue procedures, distress signals, personal safety equipment, fire precautions, and stability/heavy-weather awareness.
- Apply Rescue procedures including helicopter rescue to a realistic onboard situation.
- Recall the core check: 150N lifejackets - common for coastal sailing and designed to help turn an unconscious wearer face-up when correctly fitted.
A self-guided revision companion that explains essential concepts, then helps you practise and test them. It supports—but does not replace—recognised instruction, practical training, assessment or certification. Access is a one-time payment, not a subscription.
More ways to revise
Lesson routePersonal Safety Equipment0/10 read
Lesson 1 of 10
Personal Safety Equipment
Lifejackets are a vital part of a vessel's safety plan. They come in different performance levels: Level 150 lifejackets are intended for coastal and offshore use and are designed to help turn an unconscious wearer face-up when correctly fitted, but fit, crotch straps, clothing, condition, and servicing still matter. Level 275 may be needed for extreme conditions or heavy, air-trapping clothing.
Safety harnesses use a tether clipped to a suitable strong point or jackstay. Clip on before exposure to the hazard, following the vessel's safety plan; the route and attachment point must keep the wearer on board and reduce fall or entrapment risk.
Where a kill cord or engine cut-off lanyard is fitted, especially on open powerboats, tenders, and outboard-driven craft, it should be attached to the driver whenever the engine is running. If the driver is thrown from the helm, the cord pulls out and stops the engine, reducing the risk of an uncontrolled boat or propeller injury.
- 150N lifejackets - common for coastal sailing and designed to help turn an unconscious wearer face-up when correctly fitted
- 275N lifejackets — offshore use with heavy foul-weather clothing
- Safety harness — clips to jackstays; wear before conditions worsen
- Kill cord - engine cut-off lanyard worn by the driver where fitted
Watch for this: Before a passage, inspect the lifejacket to the maker's instructions: confirm the cylinder is full, firmly fitted and unpierced, check firing-head indicators and any automatic element's expiry, inspect the fabric and oral tube, and keep to the servicing schedule. Do not fire a live cylinder merely as a routine pre-passage check.
Lesson 2 of 10
Distress Communications
DSC (Digital Selective Calling) can raise a distress alert on VHF Channel 70. Lift the cover and press and hold the distress control for the period specified by the set's instructions. The alert identifies the vessel by MMSI and can include position and time when the radio receives valid GNSS data; it carries the selected nature of distress, or an undesignated distress if none was selected, to DSC-equipped stations in range. Follow the alert with the voice MAYDAY on Channel 16.
A voice MAYDAY is normally broadcast on VHF Channel 16. The format is: MAYDAY MAYDAY MAYDAY — This is [vessel name ×3] — MAYDAY [vessel name] — My position is [lat/long or bearing and distance from known point] — I have [nature of distress] — I require [assistance needed] — [number of persons on board] — Over.
An EPIRB (Emergency Position Indicating Radio Beacon) transmits a 406 MHz distress alert via satellite when activated; GNSS-equipped units can include position. A radar SART helps rescuers home in at close range by appearing on compatible radar.
- DSC distress alert — hold the covered distress control as instructed; MMSI is sent, with position/time when available, then follow with voice MAYDAY on Channel 16
- MAYDAY — voice distress call on VHF Ch 16 for grave and imminent danger
- PAN PAN — urgency call (serious but not immediate danger to life)
- SECURITÉ — safety message (navigational or weather warning)
- EPIRB — satellite distress beacon
- Radar SART - close-range locating aid for compatible radar
Lesson 3 of 10
Coastguard and Boat Safety Scheme
HM Coastguard coordinates maritime search and rescue in UK waters. A yacht skipper should know when to call early, how to use DSC and VHF Channel 16, and how to pass clear information: vessel identity, position, nature of problem, number of people aboard, assistance required, and intentions. The Coastguard also broadcasts Maritime Safety Information such as weather warnings and navigational warnings.
For non-distress but developing problems, call before the situation becomes unmanageable. A PAN PAN can be appropriate for urgent safety issues such as engine failure near a lee shore, a medical problem, or being unsure of position in deteriorating visibility. Keep vessel details current and leave the passage plan with a responsible shore contact so useful information is available if they call 999 for the Coastguard.
The Boat Safety Scheme is mainly associated with inland waterways, but its safety principles are relevant to any small craft: fuel systems, gas installations, ventilation, electrical systems, fire extinguishers, escape routes, and carbon monoxide awareness. For coastal sailing it does not replace seaworthiness checks, coding requirements where applicable, or the skipper's responsibility to inspect the vessel before passage.
- HM Coastguard coordinates UK maritime search and rescue
- Use DSC and VHF Ch 16 for distress; use PAN PAN early for urgent safety problems
- Coastguard broadcasts Maritime Safety Information including weather and navigation warnings
- Keep vessel, crew, and passage information available for shore contacts and rescue services
- Boat Safety Scheme principles cover fuel, gas, electrics, ventilation, fire, escape, and carbon monoxide hazards
- BSS awareness supplements, not replaces, coastal seaworthiness checks
Lesson 4 of 10
Pyrotechnics and Visual Distress Signals
Many yachts carry pyrotechnic distress signals as part of an appropriate signalling plan. Red parachute flares can alert rescuers at long range; red hand-held flares are used to help pinpoint your position at closer range. Exact height, burn time, carriage requirements, and disposal rules depend on the flare type and local regulations.
Orange smoke signals are effective during daylight when flares are harder to see. White flares are NOT distress signals — they are used to indicate your position to other vessels to avoid collision.
- Red parachute flare — long range, reaches 300m, visible 40+ seconds
- Red hand-held flare — close range, pinpoints position, ~60 seconds
- Orange smoke — daytime distress signal
- White flare — NOT a distress signal; used to warn other vessels
Watch for this: Check flare expiry dates regularly. Replace expired flares before relying on them and follow local disposal guidance; expired pyrotechnics are hazardous and are not a substitute for in-date signals.
Lesson 5 of 10
Fire Safety
Fire on a boat is extremely dangerous — there is nowhere to retreat to. Prevention is critical: maintain fuel systems, keep bilges clean of fuel and oil, ensure gas systems have proper shut-offs, and never leave cooking unattended.
The fire triangle requires fuel, heat, and oxygen. Remove any one element and the fire goes out. Fire extinguishers on boats are typically dry powder (multi-purpose), CO2 (for electrical fires), or fire blankets (for galley fires). Know where every extinguisher is stowed and how to use them before you need them.
- Fire triangle — fuel, heat, oxygen (remove one to extinguish)
- Dry powder extinguisher — multi-purpose
- CO2 extinguisher — electrical and liquid fuel fires
- Fire blanket — galley fires (chip pan, stove)
- Gas shut-off — always turn off at the bottle when not in use
Lesson 6 of 10
Helicopter Rescue
If a helicopter is involved in your rescue, listen for instructions on VHF Ch 16 or the frequency they specify. Clear the deck of loose items that could be blown around by the downdraft.
The helicopter will lower a winchman or a strop. NEVER attach the helicopter's wire to the boat — if the helicopter needs to pull away suddenly, it could capsize the vessel. Allow the winch wire to touch the water or deck first to discharge static electricity. Follow the winchman's instructions exactly.
- Never attach the helicopter wire to the boat
- Let the wire touch water or deck first (static discharge)
- Clear the deck of loose gear
- Follow the winchman's instructions
- Communicate on VHF as directed
Watch for this: The Hi-Line technique: the helicopter may trail a weighted line. Take this line but DO NOT make it fast. Use it to guide the strop or winchman to the vessel. Coil excess line loosely — never wrap it around your hand.
Lesson 7 of 10
Safety Equipment Aboard
Safety equipment must match the vessel, people, operating area, passage, and applicable rules. A coastal yacht's plan may include correctly fitted lifejackets, suitable harnesses and tethers, appropriate distress signals, fire-fighting equipment, a first-aid kit, a sound-signalling appliance, a radar reflector where appropriate, VHF radio, torch, and reliable means of raising the alarm.
For longer passages or further offshore, a liferaft and a grab bag may be essential depending on vessel type, operating area, and the passage plan. The grab bag should contain water, signalling equipment, a torch, a knife, seasickness tablets, and a handheld VHF radio. Stow safety equipment where it can be accessed quickly — not buried under stores.
- Lifejackets for all crew — easily accessible
- Flares — in date, accessible, crew know how to use them
- Fire extinguishers — serviced, crew know locations
- First aid kit — stocked and accessible
- Liferaft - for offshore passages, serviced to the manufacturer or authority schedule
- Grab bag — water, flares, torch, VHF, knife, medication
Lesson 8 of 10
Crew Overboard Recovery
When someone falls overboard, the immediate actions are critical. Shout 'MAN OVERBOARD' to alert the crew, throw a lifebuoy and dan buoy towards the casualty to mark their position, and designate one crew member as the pointer — their sole job is to keep a finger pointed at the person in the water at all times. Press the MOB button on the GPS to record the position.
Use a recovery manoeuvre that is specified and practiced for the yacht, propulsion arrangement and conditions. An immediate turn or stop can keep the casualty close, while a Williamson turn is one recognised way to return towards the reciprocal track after visual contact is lost. Under sail, a figure-of-eight is one taught option, but its tacking or gybing sequence and final approach vary. Keep the propeller away from the casualty and use neutral or stop the engine for the final recovery when appropriate.
Getting the casualty back aboard is often the hardest part. A conscious casualty may use a suitable ladder if conditions allow. A weak or unconscious casualty needs a planned recovery system—such as suitable lifting gear, a recovery strop or net—rigged and used to its instructions. Practice the complete system with representative loads before relying on it.
Cold water removes body heat much faster than air at the same temperature, and a casualty can deteriorate during or after rescue. Handle gently and, where practicable, recover horizontally or near-horizontally rather than vertically. Shelter and insulate them; replace wet clothing only when it can be done safely without harmful delay. Give a warm non-alcoholic drink only if they are fully conscious and able to swallow, and seek medical advice. Do not rub the skin or apply strong direct heat.
- Shout 'Man Overboard', throw lifebuoy and dan buoy, designate a pointer
- Press MOB on GPS to mark position immediately
- Use and practice the recovery manoeuvre suited to the actual yacht and conditions
- Williamson turn — one recognised return towards the reciprocal track when visual contact is lost
- Figure-of-eight — one taught sailing recovery method; the exact sequence is boat- and condition-specific
- Use a planned, suitable and practiced recovery system to bring the casualty aboard
- Recover horizontally or near-horizontally where practicable and handle gently
- Hypothermia: insulate, do NOT rub skin or apply direct heat
Watch for this: Practice crew overboard drills regularly using a fender as a dummy. In a real situation you will not have time to think — muscle memory saves lives.
Lesson 9 of 10
Stability and Seaworthiness
A yacht's stability depends on the relationship between two forces: the centre of gravity (G) — the point through which the total weight acts downward — and the centre of buoyancy (B) — the centre of the underwater volume through which buoyancy acts upward. When the boat heels, B moves to leeward as the underwater hull shape changes, creating a righting moment that tries to return the boat upright. The distance between the vertical lines through G and B is the righting lever (GZ).
Several factors reduce stability and must be carefully managed. Carrying heavy gear aloft (for example a dinghy on the coachroof or heavy items in a deck locker) raises the centre of gravity, reducing the righting moment. Free surface effect occurs when liquids — such as water in the bilge or partially filled tanks — slosh to the low side as the boat heels, effectively raising G and reducing stability. Flooding through an open hatch or hull breach has the same effect and is compounded by the added weight.
Keeping the boat seaworthy means reducing topweight wherever possible: stow heavy items low in the bilge, avoid carrying unnecessary weight on deck, and secure all loose gear. Ensure hatches, washboards, and ventilators can be sealed in heavy weather. A well-maintained hull with properly functioning bilge pumps, seacocks, and skin fittings is fundamental to seaworthiness. Before any passage, check that all through-hull fittings have accessible seacocks and that softwood bungs are tied to each seacock in case a hose fails.
- Centre of gravity (G) — point through which the vessel's weight acts downward
- Centre of buoyancy (B) — centre of the underwater hull volume; moves as the boat heels
- Righting moment — the force that returns a heeled vessel upright (depends on GZ lever)
- Heavy gear aloft raises G, reducing stability
- Free surface effect — liquids sloshing to leeward raise effective G
- Flooding adds weight and free surface, severely reducing stability
- Reduce topweight: stow heavy items low, avoid unnecessary deck cargo
- Secure hatches and seal openings before heavy weather
Watch for this: Keep water tanks either full or empty where possible. A half-filled tank has the worst free surface effect because the liquid has the most freedom to move.
Lesson 10 of 10
Heavy Weather Sailing
Preparation is the key to surviving heavy weather. Reef early — it is much easier to shake out a reef if the wind does not increase than to reef when it is already blowing hard and the crew are tired. Check all safety gear is accessible: lifejackets on, harnesses clipped in, and jackstays rigged. Stow all loose items below and on deck, close and secure hatches and washboards, rig lee cloths on bunks, and brief the crew on the plan.
When conditions worsen beyond the ability to make progress safely, several tactics may be available, but none produces one guaranteed attitude on every yacht. A heaving-to arrangement may use a backed headsail, reduced mainsail or trysail, and helm position, but the resulting angle, drift, loads and protection depend on hull, keel, rig, sail balance, loading, wind, waves and sea room. Practice and record the vessel'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 each introduces substantial loads and equipment-specific rigging and recovery problems; none can promise to prevent broaching, pitch-poling, capsize or gear failure. Follow the vessel and equipment guidance, protect attachment points and crew, preserve sea room, and choose the tactic for the actual yacht and wave direction.
Crew management matters as much as boat handling in heavy weather. Keep watches short, ensure off-watch crew rest and eat, and prevent seasickness spreading through the crew. Monitor everyone for signs of fatigue, fear, and hypothermia. Know the limits of both your boat and your crew, and do not be too proud to seek shelter early or call for assistance if the situation is deteriorating.
- Reef early — easier to shake out a reef than to put one in when it is blowing hard
- Stow loose gear, secure hatches, rig lee cloths, lifejackets and harnesses on
- Heaving-to configuration and resulting attitude are yacht-specific; practice before it is needed
- Lying ahull — all sail down, beam-on; risk of being rolled in severe conditions
- Running off, warps, drogues and sea anchors create major loads and need vessel-specific plans
- No heavy-weather tactic guarantees prevention of broach, pitch-pole, capsize or gear failure
- Keep watches short; prevent seasickness, fatigue, and hypothermia in crew
Watch for this: Monitor current forecasts and observations before and during the passage. Local gusts, squalls, headlands, wind against tide and developing seas can make conditions materially harder than a broad forecast description; preserve options early.