Ohio Boater Exam Practice Test 2026：第2套练习测试

Ohio Boater Exam Practice Test 练习测试第2套（共6套）：再练25道题，附答案和解释。

船只驾驶
俄亥俄州
133道题
核对于2026年10月10日

第1题，共25题
What kind of numbers do red nun buoys like this carry?
- Odd numbers
- Even numbers
- Letters only
- No numbers
显示答案
答案: B. Even numbers
Red lateral markers carry even numbers, and the numbers increase as you head in from sea.
第2题，共25题
How should the registration number be separated into groups?
- It must be written as one long group
- With a slash between letters and numbers
- With a hyphen or a space the width of one letter
- With periods between each character
显示答案
答案: C. With a hyphen or a space the width of one letter
Spaces or hyphens equal to the width of a letter (other than I) or number (other than 1) separate the groups.
第3题，共25题
How often should you inspect your fire extinguishers?
- Every 5 years
- Monthly
- Never, if the seal is intact
- Only after a fire
显示答案
答案: B. Monthly
Inspect extinguishers monthly. If the label lists a minimum weight, weigh them once a year.
第4题，共25题
Which engines must have a Coast Guard-approved backfire flame arrester?
- Diesel engines only
- Gasoline inboard engines
- Electric trolling motors
- All outboard motors
显示答案
答案: B. Gasoline inboard engines
Gasoline engines installed after April 25, 1940, except outboard motors, must have an approved backfire flame control device.
第5题，共25题
Two sailboats meet with the wind on different sides. Which must keep clear?
- The boat with the wind on its port side
- The boat with the wind on its starboard side
- The larger sailboat
- The boat that is to leeward
显示答案
答案: A. The boat with the wind on its port side
When sailing vessels have the wind on different sides, the one with the wind on its port side keeps out of the way.
第6题，共25题
What does this white marker with an open orange diamond mean?
- Danger, such as rocks, shoals or a dam
- Boats may not enter the area
- A safe place to anchor overnight
- A speed limit applies here
显示答案
答案: A. Danger, such as rocks, shoals or a dam
An orange diamond warns of danger. The danger may be described in black letters on the marker.
第7题，共25题
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
显示答案
答案: 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.
第8题，共25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9题，共25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10题，共25题
A large ship can only operate safely inside a narrow channel. What must a small recreational boat do?
- Hold course because small boats have right of way
- Not get in its way
- Stop in the channel and wait
- Cross in front of it to show its position
显示答案
答案: B. Not get in its way
Vessels under 20 meters (65.6 feet) and sailing vessels must not impede a vessel that can navigate safely only within a narrow channel.
第11题，共25题
What must every operator do at all times to avoid collisions?
- Rely on other boats to see you
- Watch the radar only
- Look out only at night
- Keep a proper lookout by sight and hearing
显示答案
答案: D. Keep a proper lookout by sight and hearing
Every vessel must keep a proper lookout by sight and hearing, and by all available means, at all times.
第12题，共25题
Your boat is 40 feet long and you operate on U.S. inland waters. What document must you keep on board?
- A copy of the boat's insurance policy
- A copy of the Navigation Rules
- A map of every state you will visit
- A list of marinas with fuel
显示答案
答案: B. A copy of the Navigation Rules
Operators of vessels 12 meters (39.4 feet) or longer must keep a copy of the Navigation Rules on board on inland waters.
第13题，共25题
Your state has a different child life jacket age than the federal rule. Which rule applies on that state's waters?
- The federal rule always
- The state rule
- Whichever age is higher
- Neither; you may choose
显示答案
答案: B. The state rule
Where a state sets its own child life jacket requirement, the state rule applies on waters under that state's jurisdiction.
第14题，共25题
A power-driven boat under 12 meters (39.4 feet) may show which lights instead of a masthead light and sternlight?
- One flashing yellow light at the bow
- Its sidelights only, with no white light
- Two red all-round lights, one above the other
- An all-round white light plus sidelights
显示答案
答案: D. An all-round white light plus sidelights
A power-driven vessel under 12 meters may combine its masthead light and sternlight into one all-round white light, shown with sidelights.
第15题，共25题
During the day, a sailboat using its engine with its sails up should display what?
- A black cone with its point down
- An orange flag on the mast
- A red pennant at the stern
- A black ball in the rigging
显示答案
答案: A. A black cone with its point down
A sailing vessel under power displays a cone, apex down, by day. It is not required for vessels under 12 meters on inland waters.
第16题，共25题
When must recreational boats show navigation lights?
- Only when other boats are close by
- From sunset to sunrise and in poor visibility
- Only on nights when there is no moon
- Only on the ocean, not on lakes or rivers
显示答案
答案: B. From sunset to sunrise and in poor visibility
Navigation lights are required between sunset and sunrise and during periods of restricted visibility.
第17题，共25题
On a powerboat under 12 meters, how high must the all-round white light be above the sidelights?
- At least 6 inches (15 cm)
- At least 10 feet (3 meters)
- At the same height as them
- At least 3.3 feet (1 meter)
显示答案
答案: D. At least 3.3 feet (1 meter)
The masthead or all-round white light must be at least 3.3 feet higher than the sidelights.
第18题，共25题
A vessel overtaking you on inland waters signals its plan, and you agree. What do you do?
- Turn toward the overtaking boat
- Sound five short blasts
- Do nothing; silence means yes
- Sound the same signal back
显示答案
答案: D. Sound the same signal back
The vessel being overtaken answers with the same signal if it agrees. If it is unsure, it sounds the danger signal of at least five short blasts.
第19题，共25题
What does this white marker with an orange circle mean?
- A controlled area; here, no wake
- Danger from rocks right below
- Boats must keep out of the area
- Directions to a nearby marina
显示答案
答案: A. A controlled area; here, no wake
An orange circle marks a controlled area, such as a no-wake or speed-limit zone. The rule is written inside the circle.
第20题，共25题
Where can you legally throw plastic overboard?
- More than 12 miles from shore
- Nowhere
- More than 3 miles from shore
- Only in rivers
显示答案
答案: B. Nowhere
Discharging plastic into the water is prohibited everywhere.
第21题，共25题
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
显示答案
答案: 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.
第22题，共25题
This marker shows a diamond with a cross and the words "SWIM AREA". What must boaters do?
- Keep it on your right when returning
- Keep out of the marked swimming area
- Anchor there to swim
- Slow down and pass through it
显示答案
答案: B. Keep out of the marked swimming area
A diamond with a cross means boats keep out. Here it protects a swimming area.
第23题，共25题
Which check is part of keeping a fire extinguisher "good and serviceable"?
- The gauge is in the operable range and the pin is in place
- The extinguisher has been tested by using it once
- The label has been removed so it fits the bracket
- The nozzle is taped shut to keep out dirt
显示答案
答案: A. The gauge is in the operable range and the pin is in place
A serviceable extinguisher has its gauge in the operable range, its lock pin in place, a clear nozzle and no serious corrosion or damage.
第24题，共25题
How should a give-way vessel act?
- By speeding up to cross in front
- Late, with a small turn at the last moment
- Early and with a large, obvious change of course or speed
- By sounding five short blasts and holding course
显示答案
答案: C. Early and with a large, obvious change of course or speed
The give-way vessel must take early and substantial action so the other operator can clearly see what it is doing.
第25题，共25题
On inland waters, what do two short blasts mean when two power-driven vessels meet or cross in sight of each other?
- "I intend to leave you on my starboard side"
- "I intend to leave you on my port side"
- "I am leaving the dock"
- "I am anchored"
显示答案
答案: A. "I intend to leave you on my starboard side"
Under Inland Rule 34, two short blasts mean "I intend to leave you on my starboard side".

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