OAR Reading Comprehension: Inferences Questions and Answers

Question 1

Read the following passage and answer the question:

"Historically, celestial navigation was an indispensable skill for mariners, requiring a sextant, a chronometer, and complex mathematical tables. A navigator's accuracy depended on a clear view of the horizon and celestial bodies, making overcast skies or foul weather significant impediments. The process was time-consuming and required a high degree of training and practice to master. While still taught as a backup, its primary role in commercial and military fleets has been superseded by modern electronic systems."

What can be inferred about modern electronic navigation systems compared to celestial navigation?

Accepted Answer

They are less dependent on weather conditions.

Answer

They require more extensive training to operate.

Answer

They are less accurate in open-ocean environments.

Answer

They are only used by military fleets.

Question 2

Read the following passage and answer the question:

"The principle of buoyancy, first described by Archimedes, states that the upward buoyant force exerted on a body immersed in a fluid is equal to the weight of the fluid that the body displaces. A ship, despite being constructed from tons of steel which is far denser than water, floats because its hull is shaped to displace a large volume of water. If the weight of the displaced water is greater than the total weight of the ship, the ship floats. If it is less, the ship sinks."

Based on the passage, what can be inferred about a submarine's ability to submerge and surface?

Accepted Answer

It must have a method to alter its own weight or the volume of water it displaces.

Answer

It must be made of a material less dense than water.

Answer

It sinks because its shape is not like a traditional ship's hull.

Answer

It relies solely on propellers to push it underwater.

Question 3

Read the following passage and answer the question:

"In the early 20th century, naval strategists developed 'dazzle camouflage' not to hide a ship, but to confuse the enemy. The complex patterns of intersecting geometric shapes in contrasting colors were designed to make it difficult for an enemy to estimate a ship's type, speed, and heading. An enemy submarine commander using a periscope would have a hard time determining exactly where to aim a torpedo. This form of camouflage was a response to the advent of long-range naval gunnery and torpedo attacks where targeting accuracy was paramount."

Which of the following can be inferred from the passage?

Accepted Answer

The primary goal of this camouflage was deception rather than concealment.

Answer

Dazzle camouflage was most effective at close ranges.

Answer

Before dazzle camouflage, all naval ships were painted gray.

Answer

Dazzle camouflage was rendered obsolete by the invention of radar.

Question 4

Read the following passage and answer the question:

"The chain of command on a naval vessel is a rigid hierarchical structure designed for operational effectiveness. Orders flow from the top down, from the commanding officer to department heads, then to division officers, and so on. This structure ensures that commands are executed swiftly and without ambiguity, which is critical during high-stakes situations. While formal communication follows this strict path, informal collaboration between departments at similar levels is often necessary for routine problem-solving."

What is the most logical conclusion that can be drawn from this passage?

Accepted Answer

The hierarchy is intended to enhance clarity and efficiency in critical moments.

Answer

Crew members are discouraged from ever speaking to anyone outside their direct chain of command.

Answer

The system is too inflexible to handle day-to-day operational challenges.

Answer

Promotion through the ranks is based solely on seniority.

Question 5

Read the following passage and answer the question:

"A ship's 'watch' system divides the crew into sections, ensuring that all essential duties are continuously performed 24 hours a day, whether the vessel is at sea or in port. Each watch team is responsible for the ship's operation for a set period, after which they are relieved by the next team. This rotation prevents fatigue and ensures that personnel manning critical stations, such as the bridge or engine room, remain alert and responsive. The system has been refined over centuries to maximize both operational readiness and crew endurance."

Based on the passage, which of the following is most likely true about a ship's operational status?

Accepted Answer

Key operational areas of the ship are never left unattended.

Answer

The entire crew works at the same time and rests at the same time.

Answer

The watch system is only used during emergency situations.

Answer

Crew members are assigned to a single, permanent duty station.

Question 6

Read the following passage and answer the question:

"The introduction of the gas turbine engine to naval vessels in the mid-20th century marked a significant leap in propulsion technology. Compared to the steam turbines they often replaced, gas turbines offered a much higher power-to-weight ratio, allowing ships to accelerate faster and reach higher top speeds. They could also be started and brought to full power in a matter of minutes, rather than the hours required for a steam plant. However, their fuel consumption at lower speeds was notably less efficient than their steam-powered predecessors."

What can be inferred about a warship commander's decision to use a gas turbine engine?

Accepted Answer

The decision involves a trade-off between rapid response capability and fuel economy.

Answer

Gas turbines are the superior choice for long, slow patrols.

Answer

Steam turbines were completely removed from all naval ships after this technology was introduced.

Answer

Gas turbine engines are significantly heavier than steam turbines.