Boater Safety Exam Practice (US) 2026: Test de práctica 5

Test de práctica 5 de 5 de Boater Safety Exam Practice (US): 20 preguntas más con respuestas y explicaciones.

Navegación
Estados Unidos
120 preguntas
Revisado el 10 de octubre de 2026

Pregunta 1 de 20
Instead of a lanyard, what other type of engine cut-off device is approved?
- A warning sticker placed on the dashboard
- A loud alarm that sounds but does not stop the engine
- A rope tied between the helm and the ladder
- A wireless fob that stops the engine in water
Ver respuesta
Respuesta: D. A wireless fob that stops the engine in water
Wireless engine cut-off devices, worn by the operator, stop the engine when the fob goes into the water.
Pregunta 2 de 20
Your boat is 70 feet long and has a toilet. Which marine sanitation device types may it use?
- No device is required
- Type I only
- Type I, II or III
- Type II or Type III
Ver respuesta
Respuesta: D. Type II or Type III
Vessels 65 feet and under may use a Type I, II or III device. Vessels over 65 feet must use Type II or III.
Pregunta 3 de 20
You are in a No Discharge Zone. What must you do with your marine sanitation device?
- Discharge only sewage that has been treated
- Remove the toilet from the boat completely
- Secure it so it cannot discharge, such as with a padlock
- Discharge only at night when no one is swimming
Ver respuesta
Respuesta: C. Secure it so it cannot discharge, such as with a padlock
In a No Discharge Zone, no sewage may be discharged, and the device must be secured, such as with a padlocked valve or locked door.
Pregunta 4 de 20
Where can you legally throw plastic overboard?
- More than 12 miles from shore
- Nowhere
- More than 3 miles from shore
- Only in rivers
Ver respuesta
Respuesta: B. Nowhere
Discharging plastic into the water is prohibited everywhere.
Pregunta 5 de 20
A 30-foot boat with an engine room must post which placard?
- An oil discharge placard, at least 5 by 8 inches
- A speed limit sign for the nearest marina
- A placard listing the names of the crew
- A no-smoking sign, at least 2 by 3 inches
Ver respuesta
Respuesta: A. An oil discharge placard, at least 5 by 8 inches
Boats 26 feet or longer with a machinery space must post an oil discharge placard at least 5 by 8 inches in the machinery space or at the bilge pump station.
Pregunta 6 de 20
Which boats must display a garbage placard?
- Only boats over 100 feet
- Only sailboats
- All boats of any size
- Boats 26 feet and longer
Ver respuesta
Respuesta: D. Boats 26 feet and longer
Vessels 26 feet or longer must display a garbage placard at least 4 by 9 inches in a prominent place.
Pregunta 7 de 20
Which kind of life jacket is the right choice for riding a personal watercraft?
- A non-inflatable life jacket rated for PWC use
- A throwable cushion held on your lap
- No life jacket is needed on a PWC
- An inflatable belt pack
Ver respuesta
Respuesta: A. A non-inflatable life jacket rated for PWC use
Most inflatable life jackets are not approved for PWC use. Wear a properly sized, inherently buoyant life jacket meant for PWC riding.
Pregunta 8 de 20
Why is a personal watercraft operator's lanyard attached to their body or life jacket?
- So the PWC can be anchored
- So the engine stops if the rider falls off
- So the lights turn on automatically
- So the rider can tow a tube
Ver respuesta
Respuesta: B. So the engine stops if the rider falls off
If the rider falls off, the lanyard pulls the cut-off switch and the engine stops, so the PWC does not keep going without them.
Pregunta 9 de 20
What is true about carbon monoxide (CO) from boat engines?
- It is safe outdoors on a boat
- It only comes from diesel engines
- It smells like gasoline, so it is easy to notice
- It has no color or smell and can kill quickly
Ver respuesta
Respuesta: D. It has no color or smell and can kill quickly
Carbon monoxide is colorless and odorless. It can build up around a boat, especially near the stern and swim platform, while engines or generators run.
Pregunta 10 de 20
Where should swimmers stay away from while a boat's engine or generator is running?
- The shoreline and shallow water nearby
- The bow, where the anchor is stored
- The swim platform and the back of the boat
- The anchor line at the front of the boat
Ver respuesta
Respuesta: C. The swim platform and the back of the boat
Exhaust gases with carbon monoxide collect near the stern and swim platform. Do not swim or sit there while engines or generators run.
Pregunta 11 de 20
Why is sudden immersion in cold water so dangerous in the first minutes?
- Your body freezes solid within seconds
- Cold water is much harder to float in
- Life jackets stop working in cold water
- Cold shock makes you gasp and breathe in water
Ver respuesta
Respuesta: D. Cold shock makes you gasp and breathe in water
Sudden immersion triggers a gasp reflex and fast breathing. Without a life jacket, you can inhale water and drown before hypothermia even starts.
Pregunta 12 de 20
You are alone in cold water wearing a life jacket and cannot climb out. What should you do?
- Splash and kick constantly to stay visible
- Take off your life jacket so you can move freely
- Swim hard in circles to keep your body warm
- Fold your arms, cross your legs and float still
Ver respuesta
Respuesta: D. Fold your arms, cross your legs and float still
The Heat Escape Lessening Posture (HELP) reduces heat loss. Swim only if safety is very close.
Pregunta 13 de 20
Several people are in cold water wearing life jackets. How can they stay warmer?
- Spread out to be seen
- Float on their backs far apart
- Huddle close together
- Take turns swimming laps
Ver respuesta
Respuesta: C. Huddle close together
The huddle position reduces heat loss and keeps the group together for rescuers.
Pregunta 14 de 20
What does NASBLA stand for?
- North American Society of Boat Licensing Authorities
- National Association of State Boating Law Administrators
- National Alliance of Sailing and Boating Leagues
- National Agency for Safe Boating and Lifesaving Activities
Ver respuesta
Respuesta: B. National Association of State Boating Law Administrators
NASBLA is the national association of state boating law administrators. Most state boater education courses are NASBLA-approved.
Pregunta 15 de 20
Your boat meets the rules of the state where it is registered. Does it automatically meet the rules of every other state?
- No. Another state may have different requirements
- Yes, as long as it has federal equipment
- Yes, all states have identical rules
- Only if the boat is under 16 feet
Ver respuesta
Respuesta: A. No. Another state may have different requirements
Federal rules are the minimum. A boat that meets its home state's rules may not meet the rules of another state where it is used.
Pregunta 16 de 20
A 32-foot boat built in 2020 needs fire extinguishers. Which choice meets the requirement (with no fixed system)?
- One 5-B extinguisher
- One household 1-A unit
- Three 20-B extinguishers
- Two 5-B, or one 20-B
Ver respuesta
Respuesta: D. Two 5-B, or one 20-B
Boats 26 feet to under 40 feet need two 5-B extinguishers. Because one 20-B can replace two 5-B extinguishers, one 20-B also meets the rule.
Pregunta 17 de 20
A 70-foot (21-meter) boat must carry which sound-producing devices?
- A whistle, a bell and a gong
- A hand-held air horn only
- A whistle and a bell
- A whistle only
Ver respuesta
Respuesta: C. A whistle and a bell
Vessels 20 meters or longer need a whistle and a bell. A gong is added at 100 meters or longer.
Pregunta 18 de 20
During the day, what shape does a vessel at anchor display?
- Two red balls on the mast
- An orange flag at the stern
- A black ball near the bow
- A black cone, point down
Ver respuesta
Respuesta: C. A black ball near the bow
An anchored vessel shows a black ball forward by day and an all-round white light at night. Vessels under 7 meters away from channels and anchorages are generally exempt.
Pregunta 19 de 20
What does "not under command" mean in the Navigation Rules?
- A vessel with no licensed captain on board at the time
- A vessel that cannot maneuver because of a problem, such as a steering failure
- A vessel that is going faster than the posted speed limit
- A vessel that is anchored or tied to a mooring buoy
Ver respuesta
Respuesta: B. A vessel that cannot maneuver because of a problem, such as a steering failure
A vessel not under command cannot keep out of the way because of an exceptional circumstance. Other vessels, including sailboats, must keep clear of it.
Pregunta 20 de 20
You are towing a water-skier. What is the job of the observer on board?
- Steer the skier using only hand signals
- Keep other boats from coming close to watch
- Watch the skier and tell the operator what happens
- Drive the boat while the operator watches
Ver respuesta
Respuesta: C. Watch the skier and tell the operator what happens
The operator must watch where the boat is going, so a second person keeps a continuous eye on the skier and reports falls and signals.

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