Помогите пожалуйста №20

1 What is your rank on board ship
What are you responsible for

2 What is your C responsible for
Does the C keep watch
Who keeps watch then

3 How often do navigators and engineers relieve each other of watch
Do radio-officers take bearings
Whose duty is it

How many people does the ships crew consist of
Do motormen maintain the ship;s generators
What do motormen do