BSAC Interactive Learning

DT8 Dive Planning

Who should appoint the Dive Manager for a branch dive? See Student Workbook p72
1. The Diving Officer
2. The skipper
3. Dive Managers are self-appointed
4. The diving party, by mutual agreement
Which of the following is a correct statement about the role of the DM on a BSAC branch dive? Tick all that apply. See Student Workbook pp72-73
1. The DM can only be over-ruled by the DO
2. The DM can stop others diving, for safety reasons
3. The DM should be the most highly qualified member of the group
4. The DM must perform all tasks needed for dive management personally
5. The DM is in charge so should not consult with other divers
Which of the following should be taken into consideration when planning buddy pairs? Tick all that apply. See Student Workbook pp73-74
1. Feedback from other DMs
2. Divers' interests
3. Divers' preferences
4. Gas mix
5. Capacity and type of scuba equipment
6. Divers' skills and qualifications
The training and experience gained through becoming a Dive Leader enables you to manage dives at what type of site? See Student Workbook p75
1. Inland
2. Known to the branch
3. Non-tidal
4. Shallow
5. Unknown
What does the diagram illustrate? See Student Workbook pp77-80
1. Parallels of latitude
2. Meridians of latitude
3. Meridians of longitude
4. Parallels of longitude
What does the diagram illustrate? See Student Workbook pp
1. Parallels of latitude
2. Meridians of latitude
3. Meridians of longitude
4. Parallels of longitude
How many positions on the Earth's surface have latitude 50° longitude 5°? See Student Workbook pp77-80
1. One
2. Two
3. Three
4. Four
5. Five
Which of the following represents 1 nautical mile on a chart? See Student Workbook pp77-80
1. 1 degree of latitude
2. 1 degree of longitude
3. 1 minute of latitude
4. 1 minute of longitude
5. 1 second of latitude
6. 1 second of longitude
How far is a nautical mile? See Student Workbook pp77-80
1. 1 statute mile
2. 5208 feet
3. 6080 feet
Which edge of a chart contains the scale you should use when measuring distance? See Student Workbook pp77-80
1. Bottom
2. Left
3. Left and right
4. Right
5. Top
6. Top and bottom
Why is it important to use the part of the latitude scale adjacent to the area concerned when measuring distances on a chart? See Student Workbook pp77-80
1. Because the parallels of latitude are a constant distance apart
2. Because it's the easiest way to use dividers
3. 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
4. It isn't important
Which of the circles labelled A to E on the chart contains the position 56°37.74'N 6°1.68'W? See Student Workbook pp77-80
1. A
2. B
3. C
4. D
5. E
What is the approximate position of the chart symbol in the centre of the circle labelled B? See Student Workbook pp77-80
1. 5°59'N 56°35'W
2. 56°34.5'N 5°59.3'W
3. 56°34.5'N 5°58.7'W
4. 56°34.5'N 6°0.3'W
5. 56°34.5'N 6°0.7'W
6. 56°34.9'N 5°58.7'W
7. 56°34.9'N 5°59.3'W
8. 56°34.9'N 6°0.3'W
9. 56°34.9'N 6°0.7'W
Which of the following electronic devices uses radio signals from satellites to fix its position? See Student Workbook p80
1. Echo sounder
2. GPS receiver
3. VHF radio
4. Magnetometer
5. Digital compass
What is a transit? See Student Workbook pp81-82
1. A position line
2. A pair of waypoints
3. A conspicuous feature on land
4. A visual sighting lining up two features
5. A compass bearing used to fix the position of a dive site
Which of the following makes for the best transit, other things being equal? See Student Workbook pp81-82
1. Two features close together
2. Two features far apart
3. More than two features
4. Nearest feature closer to the eye than to the other feature
5. Nearest feature further from the eye than to the other feature
Which of the following gives the most accurate position fix, other things being equal? See Student Workbook pp80-81
1. Two transits less than 90° apart
2. Two transits 90° apart
3. Two transits more than 90° apart
4. Two transits 180° apart
Which of the following can apply at spring tides but not at neaps? Tick all that apply. See Student Workbook p82
1. Highest high water
2. Highest low water
3. Lowest high water
4. Lowest low water
5. Full moon
6. New moon
7. Quarter moon
8. Three-quarter moon
Why is being able to predict the maximum depth at the dive site important for dive planning? Tick all that apply. See Student Workbook p82
1. For planning decompression
2. For choosing a site which matches the divers' qualifications and experience
3. For planning breathing gas quantity
4. For planning breathing gas mix
Which of the following applies to UK tide tables? See Student Workbook pp82-83
1. Times are given in UTC
2. Add one hour during BST
3. Use the table for the Standard Port nearest to the dive site
4. Tide tables may include symbols to indicate the dates of full moon and new moon
5. Tide tables show the times of slack water
Which of the following statements are correct? Tick all that apply. See Student Workbook pp82-83
1. The highest high waters occur on spring tides
2. The lowest low waters occur on neap tides
3. Expect lower high waters around three-quarters moon
4. Expect higher low waters around full moon
5. Expect lower low waters around new moon
Using the tide table extract below, calculate the depth of water at afternoon LW at a location where the sounding on the chart shows 20.6m. Times are UTC. See Student Workbook pp83-84
Monday, 09 March 2009
02:45 1.3m
08:59 5.6m
15:14 0.7m
21:30 5.5m
1. 19.9m
2. 20.6m
3. 21.3m
4. 21.9m
5. 25.4m
6. 26.1m
7. 26.2m
Using the tide table extract below, calculate the depth of water at morning HW at a location where the sounding on the chart shows 20.6m. Times are UTC. See Student Workbook pp83-84
Monday, 09 March 2009
02:45 1.3m
08:59 5.6m
15:14 0.7m
21:30 5.5m
1. 19.9m
2. 20.6m
3. 21.3m
4. 21.9m
5. 25.4m
6. 26.1m
7. 26.2m
Using the tide table extract below, calculate the depth of water at morning LW at a location where the sounding on the chart shows 30.8m. Times are BST. See Student Workbook pp83-84
Monday, 01 September 2008
00:38 9.8m
07:24 0.6m
12:59 9.5m
19:38 0.9m
1. 30.2m
2. 31.4m
3. 31.7m
4. 39.1m
5. 40.3m
6. 40.6m
7. 40.9m
Using the tide table extract below, calculate the depth of water at afternoon HW at a location where the sounding on the chart shows 30.8m. Times are BST. See Student Workbook pp83-84
Monday, 01 September 2008
00:38 9.8m
07:24 0.6m
12:59 9.5m
19:38 0.9m
1. 30.2m
2. 31.4m
3. 31.7m
4. 39.1m
5. 40.3m
6. 40.6m
7. 40.9m