Before you read the passage, talk about these questions.

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1 nautical mile = 1.85 km

nautical mile

depth

distance

nautical mile

gross ton

Nautical Measurements

Get ready!

1. Before you read the passage, talk about these questions.

1 What are some nautical units of measurements for water depth?

2 How are speed and distance measured in nautical units?

Reading

2. Read the textbook excerpt. Then, mark the following statements as true (T) or false (F).

1 __ Nautical measurements of distance follows the curvature of the earth.

2 __ One hundred fathoms equals one foot.

3 __ The cable is a measure of depth.

Vocabulary

3. Place the correct words from the word bank under the correct headings.

fathom                   knot           nautical mile

       foot        cable

Measurements of depth

Measurements of distance and speed

_______________________________

_______________________________

_______________________________

________________________________

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4. Choose the sentence that uses the underlined part correctly.

1     A The depth here is 10 fathoms.

       B We are travelling at a ret of 10 cables per hour.

2     A Gross tons measure a ship’s internal volume.

       B The water here is one nautical mile deep.

3     A How many knots does this ship weight?

       B We need to decrease our speed because of the storm.

4     A A cable is equal to six feet.

       B The distance between here and the island is two nautical miles.

5     A A knot is the measurements of space between two points.

       B Weight is a measurement of the mass of an object.

5. Listen and read the textbook excerpt again. How are nautical miles different from land-based measurements?

Listening

6. Listen to a conversation between a captain and an officer. Mark the following statements as true (T) or false (F).

1 __ The speakers discuss the depth of the water.

2 __ The man wants to increase the ship’s speed.

3 __ The water is currently calm.

Познавательные статьи:



Где возникла философия и почему?

Относительная высота сжатой зоны бетона

Сущность проекции Гаусса-Крюгера и использование ее в геодезии

Тарифы на перевозку пассажиров