Dive Leader Knowledge: DT8 - Dive Planning

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* 1. Who should appoint the Dive Manager for a branch dive?

The Diving Officer

The skipper

Dive Managers are self-appointed

The diving party, by mutual agreement

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* 2. Which of the following is a correct statement about the role of the DM on a BSAC branch dive? Please select all that apply.

The DM Has the authority of the Diving Officer

The DM can stop others diving, for safety reasons

The DM should be the most highly qualified member of the group

The DM must perform all tasks needed for dive management personally

The DM is in charge so should not consult with other divers

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* 3. The training and experience gained through becoming a Dive Leader enables you to manage dives at what type of site?

Inland

Known to the branch

Non-tidal

Shallow

Unknown

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* 4. How many positions on the Earth's surface have latitude 50°N longitude 5°W?

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* 5. How far is a nautical mile?

1 statute mile

5208 feet

1852m

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* 6. Why is it important to use the part of the latitude scale adjacent to the area concerned when measuring distances on a chart?

Because the parallels of latitude are a constant distance apart

Because it's the easiest way to use dividers

Because projecting the Earth's surface onto a flat piece of paper may introduce distortions so that the same distance is a longer line on some parts of the chart than on others

It isn't important

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* 7. Which of the following electronic devices uses radio signals from satellites to fix its position?

Echo sounder

GPS receiver

VHF radio

Magnetometer

Digital compass

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* 8. What is a transit?

A position line

A pair of waypoints

A conspicuous feature on land

A visual sighting lining up two features

A compass bearing used to fix the position of a dive site

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* 9. Which of the following makes for the best transit, other things being equal?

Two features close together

Two features far apart

More than two features

Nearest feature closer to the eye than to the other feature

Nearest feature further from the eye than to the other feature

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* 10. Which of the following gives the most accurate position fix, other things being equal?

Two transits less than 90° apart

Two transits 90° apart

Two transits more than 90° apart

Two transits 180° apart

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* 11. Why is being able to predict the maximum depth at the dive site important for dive planning? Please select all that apply.

For planning decompression

For choosing a site which matches the divers' qualifications and experience

For planning breathing gas quantity

For planning breathing gas mix

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* 12. Which of the following applies to UK tide tables? Please select all that apply.

Times are usually given in UT

Add one hour during BST

Use the table for the Standard Port nearest to the dive site

Tide tables may include symbols to indicate the dates of full moon and new moon

Tide tables show the times of slack water

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* 13. Which of the following statements are correct? Please select all that apply.

The highest high waters occur on spring tides

The lowest low waters occur on neap tides

Expect lower high waters around three-quarters moon

Expect higher low waters around full moon

Expect lower low waters around new moon