Which is a sign that someone may be hypothermic?
PCOC Boating Test: Person overboard and cold water
Recovering a person overboard, the Anderson and Williamson turns, reboarding, the 1-10-1 principle, signs of hypothermia, and the H.E.L.P. and huddle positions.
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- Every answer explained
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- 18 questions
- Topic drill
Study reference: Safe Boating Guide (TP 511E, 03/2026), Ch. Be prepared for an emergency — Falling overboard, surviving in cold water, pp. 51–54
All 18 questions in this test
Every question and its answer choices. The correct answers and explanations appear when you take the test above.
Which is a sign that someone may be hypothermic?
- Feeling very hot
- Rapid, deep breathing and sweating
- Slurred speech and confusion
- A fast, strong pulse
You fall into cold water. What should you focus on during the first minute?
- Shouting for help constantly
- Keeping your airway clear and slowing your breathing
- Removing heavy clothing
- Swimming hard for shore now, before your muscles weaken
Someone falls overboard. What should you do first?
- Sound the alarm and slow down
- Speed up to circle back
- Jump in after them
- Call your insurance company
Why should you wear your lifejacket instead of planning to grab it if you fall in?
- It inflates only when worn
- Cold water makes it very hard to put on
- It only works when dry
- Wearing it is always the law on every boat
About how long does the cold shock stage last?
- About 10 minutes
- About 10 seconds
- About 1 hour
- About 1 minute
As you come alongside a person in the water, what should you do with the engine?
- Put it in neutral
- Raise it while running
- Put it in reverse
- Keep it in forward gear
What happens during the roughly 10 minutes of cold incapacitation?
- You lose use of arms and legs
- Your breathing stops
- You lose consciousness
- Your body warms back up
Why throw something that floats to a person who has fallen overboard?
- It helps them float and marks the spot
- It slows the boat down
- It keeps the boat from drifting
- It shows rescuers the current
Hypothermia begins when your body temperature drops below what level?
- 35°C
- 37°C
- 30°C
- 25°C
About what share of Canadian boaters who drown were in water colder than 20°C?
- About 50%
- About 30%
- About 94%
- About 75%
In a Williamson turn, when do you put the rudder hard over to the opposite side?
- After turning 90° off course
- After turning 60° off course
- As soon as the person falls
- After turning 180°
Which person-overboard manoeuvre is fastest and best in calm water with good visibility?
- Reversing straight back
- A figure-eight at full speed
- The Anderson (single) turn
- The Williamson turn
On which side of the boat should you bring a person back aboard?
- The leeward side
- The windward side
- Over the bow only
- Over the motor
What does the 1-10-1 principle describe?
- Fuel planning
- Anchor line lengths for different depths
- Lifejacket size ranges
- The stages of cold-water immersion
You are in cold water far from shore wearing a PFD, with no one to join. What should you do?
- Tread water vigorously
- Take off your boots and jacket
- Swim hard to stay warm
- Stay still in the H.E.L.P. position
During a person-overboard recovery, what job should one person on board be given?
- Steering at full speed back toward the person
- Radioing the marina for a tow
- Watching the person in the water constantly
- Pulling up the anchor
Can a rope you use as a reboarding device also serve as your dock line?
- Yes, if it floats
- Yes, if it is at least 15 m long and floats
- No, it can't be used for anything else
- Yes, on boats under 6 m
Three people are in cold water after capsizing. What position helps them keep warm and stay together?
- Floating spread out apart
- Swimming in a circle
- The huddle position
- Holding hands at arm's length
Person overboard and cold water: key rules to remember
Our summary of what the official handbook says on this topic, in our own words. Read it before or after the practice questions above, then check the original chapter. Read the official chapter ↗
Falling overboard
- Falling overboard is one of the main ways people die in recreational boating in Canada; wearing a lifejacket cuts the risk.
- Causes: waves, slippery decks, sudden sharp turns, collisions. A quick-release harness and safety line can help.
- If someone falls overboard: sound the alarm; slow down and stop if possible; throw something that floats (also marks the spot); assign one person to watch the person constantly; position the boat carefully; recover with a floating heavy line or a lifebuoy on a line; bring the person aboard on the windward side.
- During recovery turns: go slow, know where the person is, keep the propeller far away.
- Anderson (single) turn: fastest; calm water, good visibility. Reduce speed, rudder hard over toward the victim, turn about 250 degrees (about 2/3 of a circle), approach with the victim ahead of the propellers, engine in neutral to recover.
- Williamson turn: delayed response or poor visibility (night, waves). Rudder hard over toward the victim's side; after 60 degrees off course, hard over to the opposite side; 20 degrees short of the opposite course, rudder midships; come upwind of the person; stop alongside in neutral.
Reboarding and cold water
- Reboarding device needed if the climb is more than 0.5 m (1'8"); may be a ladder, lifting harness, rope, chain or cable - not part of the motor; a rope used for reboarding can't be used for anything else.
- About 94% of Canadian boaters who drown were in water under 20°C.
- 1-10-1 Principle: 1 minute cold shock (sudden gasp, hyperventilation 600-1000% faster than normal) - keep airway clear, stay calm, slow your breathing. Even strong swimmers suffer cold shock.
Cold incapacitation and hypothermia
- About 10 minutes cold incapacitation: lose meaningful movement of arms, legs, fingers; focus on self-rescue or keep airway out of the water; without a lifejacket you will likely drown. Putting on a lifejacket in the water is very hard.
- About 1 hour to lose consciousness from hypothermia, even in ice water. Hypothermia = body temperature below 35°C.
- Signs: shivering, slurred speech, weak irregular pulse, slow shallow breathing, clumsiness, odd behaviour, confusion or sleepiness, stopped breathing, unconsciousness.
- Prevent: don't overload, avoid falling overboard, wear your lifejacket.
- In the water: save energy and heat; swim only to join others or reach safety; don't swim to keep warm; climb onto floating objects.
- H.E.L.P. (heat escape lessening position): arms crossed tight against chest, knees drawn up. Huddle: chests close together, arms around each other's backs, legs intertwined.
- Spring/fall/winter: light dry layers plus water/windproof outer layer under the lifejacket; consider floater/survival suits, dry suits, wet suits, immersion suits.
Study the Person overboard and cold water rules as flashcards →
Other topics
- Proof of competency and age limitsWho needs a Pleasure Craft Operator Card, the other accepted proofs of competency, the rental boat checklist, replacing a lost card, the horsepower limits for operators under 16 and which documents to carry.
- Licences, compliance notices and hull numbersPleasure craft licence rules (10 hp threshold, 5-year validity, 30-day deadlines, marking the bow), registration, compliance notices and safe limits, hull serial numbers and buying or building a boat.
- Lifejackets and PFDsLifejacket types and sizes, how PFDs differ, inflatable PFD restrictions, fitting children, checking and caring for flotation devices, heaving lines, lifebuoys and reboarding devices.
- Required safety equipment by boat lengthMinimum equipment by boat type and length, how length is measured, the notes on flares, reboarding devices, compasses and radar reflectors, manual propelling devices, anchors, bailers and sound-signalling devices.
- Flares and visual distress signalsRocket parachute, multi-star, hand and smoke flares, their heights and burn times, expiry and storage, electronic visual distress signals, disposing of old flares and other recognized distress signals.
- Fire, fuelling and carbon monoxideFire classes and extinguisher ratings, monthly checks, fighting a fire on board, the fuelling procedure and 4-minute blower rule, carbon monoxide, heavier-than-air vapours and ignition protection.
- Trip planning, weather and loadingSeaworthiness and the pre-departure check, marine forecasts and wind warnings, sail plans, charts and publications, local hazards, loading your boat and the free courtesy check.
- Rules of the road (Collision Regulations)Lookout, safe speed and risk of collision, head-on, crossing and overtaking situations, give-way and stand-on duties, which vessels keep clear of which, narrow channels and restricted visibility.
- Sound signalsShort and prolonged blasts, manoeuvring signals (one, two, three and five blasts), the bend signal, fog signals by vessel type, the Great Lakes difference and required sound appliances.
- Navigation lights and shapesMasthead, side, stern and all-round lights and their arcs, light options for power boats, sailboats and paddle craft, anchor lights and the anchor ball, the motor-sailing cone and towing lights.
- Lateral buoys and daybeaconsPort and starboard hand buoys and the upstream rule, bifurcation, fairway and isolated danger buoys, and port, starboard and junction daybeacons.
- Cardinal and special buoysCardinal buoy colours, topmarks and lights, and the special buoys: cautionary, anchorage, information, hazard, keep out, scientific (ODAS), diving, mooring, control and swimming.
- Buoy numbers, tops, lights and markingsHow buoys are classified, odd and even numbers, flat and conical tops, light and reflector colours, the PRIV marking and how to recognise hazard, keep out, control, mooring and swimming buoys.
- Speed, wake, noise and local restrictionsChoosing a safe speed, wake damage, the muffler rule, the 10 km/h shoreline limit and its exceptions, Vessel Operation Restriction Regulations signs, and rules around marine mammals.
- Sharing the water and local hazardsLarge ships and their blind spots, tugs and tows, diver flags, seaplanes, low-head dams, power lines, historic canal rules, passing through a lock and the St. Lawrence Seaway.
- PWC, towing and paddlingPersonal watercraft age and handling rules, towing water-skiers and tubers (spotter, seats, sunset limit), stand-up paddleboard leashes and safety tips for paddlers, hunters and anglers.
- Impaired boating, fines and visitorsImpaired boating under the Criminal Code, the 2-hour rule, penalties, common contravention fines, who enforces boating laws, provinces without ticketing, and rules for non-resident boaters.
- Marine radio and distress callsVHF channels 16, 68 and 70, DSC and MMSI numbers, the operator certificate, cell phones and beacons, Mayday, Pan-Pan and Sécurité calls, false alerts and the duty to help.
- Protecting the waterClean, drain and dry against invasive species, sewage rules (holding tanks, Ontario's ban on discharge and portable toilets), bilge pollution, green boating habits and reporting pollution or suspicious activity.