California Boater Card Practice Test 2026：第6套练习测试

California Boater Card Practice Test 练习测试第6套（共6套）：再练20道题，附答案和解释。

船只驾驶
加利福尼亚州
132道题
核对于2026年10月10日

第1题，共20题
You are returning from sea. On which side should you keep this red buoy?
- On your port (left) side
- On either side
- Only on your left at night
- On your starboard (right) side
显示答案
答案: D. On your starboard (right) side
Remember "red, right, returning": keep red markers on your starboard side when returning from sea.
第2题，共20题
In fog, what signal does a power-driven vessel give while it is moving through the water?
- A bell rung once every 5 minutes
- Two short blasts every minute
- Three short blasts every 2 minutes
- One prolonged blast at least every 2 minutes
显示答案
答案: D. One prolonged blast at least every 2 minutes
In restricted visibility, a power-driven vessel making way sounds one prolonged blast at intervals of no more than 2 minutes.
第3题，共20题
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
显示答案
答案: 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.
第4题，共20题
At night you see a red and a green light straight ahead. What is happening?
- A vessel is heading straight toward you
- A vessel is moving away from you
- A vessel is anchored
- A buoy marks a channel
显示答案
答案: A. A vessel is heading straight toward you
Seeing both sidelights means the vessel is pointed at you. Treat it as a head-on meeting and turn to starboard.
第5题，共20题
What is the maximum federal criminal penalty for boating under the influence?
- A written warning, with no fine
- Up to $5,000, one year in prison, or both
- Loss of your car driver license only
- A fine of up to $50 and a short class
显示答案
答案: B. Up to $5,000, one year in prison, or both
Federal BUI penalties include a civil penalty of up to $1,000, or a criminal penalty of up to $5,000, one year in prison, or both.
第6题，共20题
Under federal law, at what blood alcohol concentration is a recreational boat operator considered intoxicated?
- 0.12 or higher
- 0.02 or higher
- 0.08 or higher
- 0.15 or higher
显示答案
答案: C. 0.08 or higher
Operating a vessel with a blood alcohol concentration of 0.08 or higher is a federal violation. States also have their own BUI laws.
第7题，共20题
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
显示答案
答案: 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.
第8题，共20题
Which feature means a boat must carry a fire extinguisher?
- Permanently installed fuel tanks
- A swim ladder at the stern
- A locker for the anchor and line
- A canvas bimini top for shade
显示答案
答案: A. Permanently installed fuel tanks
Extinguishers are required on boats with features such as closed compartments where fuel tanks may be stored, permanently installed fuel tanks or closed living spaces.
第9题，共20题
What do three short blasts mean?
- "I am operating astern propulsion"
- "I am turning to starboard now"
- "Please pass me on either side"
- "I need fuel or other help"
显示答案
答案: A. "I am operating astern propulsion"
Three short blasts mean the vessel is operating astern propulsion, such as backing its engines.
第10题，共20题
A 22-foot outboard boat has a closed compartment where a portable fuel tank is stored. How many 5-B extinguishers does it need?
- Two
- Three
- None
- One
显示答案
答案: D. One
Boats under 26 feet that need an extinguisher must carry one 5-B extinguisher (or none if a fixed system is installed in the machinery space).
第11题，共20题
You approach a river bend where you cannot see around the corner. What signal should you sound on inland waters?
- Five short blasts
- Two short blasts
- One prolonged blast
- Three short blasts
显示答案
答案: C. One prolonged blast
A vessel nearing a bend or obstructed area sounds one prolonged blast. Any vessel around the bend that hears it answers with a prolonged blast.
第12题，共20题
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
显示答案
答案: 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.
第13题，共20题
A vessel flies this blue and white flag (code flag A). What does it mean?
- It is towing a skier and needs extra room
- It is for sale and you may come alongside
- It has divers down and cannot easily maneuver
- It is anchored for the night with no one aboard
显示答案
答案: C. It has divers down and cannot easily maneuver
When a vessel engaged in diving cannot show the normal shapes, it displays a rigid replica of code flag "A" at least 1 meter (3.3 feet) high.
第14题，共20题
What sound signal does a sailing vessel give in fog or other restricted visibility?
- One prolonged and two short blasts, every 2 minutes or less
- Continuous blasts on the horn until the fog lifts
- One short blast, repeated once every minute
- Two prolonged blasts, at least every 2 minutes
显示答案
答案: A. One prolonged and two short blasts, every 2 minutes or less
A sailing vessel in restricted visibility sounds one prolonged and two short blasts at intervals of no more than 2 minutes.
第15题，共20题
Which boats are covered by the federal engine cut-off switch law?
- Only sailboats that have an outboard motor
- Only commercial fishing boats of any size
- Recreational boats under 26 feet, about 3 hp or more
- All recreational boats over 40 feet long
显示答案
答案: C. Recreational boats under 26 feet, about 3 hp or more
The law covers recreational vessels under 26 feet with engines that make 115 pounds of static thrust (about 3 hp) or more.
第16题，共20题
What kind of numbers do green can buoys like this carry?
- Numbers ending in zero
- Odd numbers
- Letters only
- Even numbers
显示答案
答案: B. Odd numbers
Green lateral markers carry odd numbers. Red markers carry even numbers.
第17题，共20题
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
显示答案
答案: 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.
第18题，共20题
What should the stand-on vessel do in a crossing situation?
- Keep its course and speed
- Speed up to get clear faster
- Stop its engine right away
- Turn toward the other boat
显示答案
答案: A. Keep its course and speed
The stand-on vessel holds its course and speed so the give-way vessel can predict its path.
第19题，共20题
In a narrow channel, which side should you keep to?
- The starboard (right) side
- Whichever side has less traffic
- The center of the channel
- The port (left) side
显示答案
答案: A. The starboard (right) side
In a narrow channel, keep as near to the outer edge on your starboard side as is safe.
第20题，共20题
This white buoy with a blue band is a mooring buoy. What is it for?
- Warning of a hidden rock
- Marking the right side of a channel
- Marking a no-wake zone
- Tying up or securing a boat
显示答案
答案: D. Tying up or securing a boat
Mooring buoys are white with a horizontal blue band. They are made for boats to tie up to.

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