Section 4 recording
The Marine Chronometer
You will hear a university lecturer giving a talk on the development of the marine chronometer.
One speaker · British English · 3:18
In the real test you hear each recording once. Read the questions first, then play it through without pausing.
Go to the questions ↓Questions 1–7
Complete the sentences below. Write NO MORE THAN TWO WORDS AND/OR A NUMBER for each answer.
Word limit: NO MORE THAN TWO WORDS AND/OR A NUMBER
1Early navigators struggled because they lacked an accurate method to calculate their .
2Robert Vane believed the problem could be solved by using a reliable instead of astronomical charts.
3To avoid using oil, Vane manufactured internal clock parts from a dense wood called .
4The balance spring was crafted from to prevent temperature changes from affecting the clock.
5During its first ocean trial in 1736, the test ship survived a fierce .
6The evaluation board dismissed Vane's initial success as a .
7Vane's fourth prototype was so compact that it resembled a large .
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