| Most
of the diving you will enjoy on holiday is going to be from a
'normal' daily diving boat but there may be some instances where you
want to do a drift from the zodiac, so you will need to 'perfect'
the backwards roll. It's very simple so long as you remember a few
key points. |
| There
are two ways of doing this: |
|
| Positive
entry |
| Make
sure you have some air (at least half full) in your BCD, then
holding all equipment in place as you would for a Giant Stride,
right hand on your mask and regulator and your left hand holding
your weight belt and pressure gauge. Then position yourself with
your tank on the outside of the rubber tube from the zodiac and when
the zodiac driver or dive guide gives you the go signal make a
gentle backwards roll. The buoyancy from the BCD will make sure you
come safely back to the surface. Give the driver and dive guide the
OK signal then on with your dive. |
|
| Negative
entry |
| This
one's a bit trickier. The idea for the negative entry is to swim
straight down to a predetermined depth as soon as you enter the
water. This is mostly used to overcome any surface currents that can
occur at shallow depths. |
| Empty
all the air from your BCD using all of the dumps on your jacket.
Then it's the same procedure to enter the water as before. |
| Once
you feel your face hit the water then start to fin downwards. If you
have a rear dump valve on your BCD it's also a good idea to reach
back and pull on it so you're sure that all the air is released from
the jacket as you descend. Don't forget to equalize! |
| Stop
when you reach your predetermined depth, then, once you've made
contact with your buddy or dive guide continue the dive as planned. |
|
| Roger Byrne is a PADI M.S.D.T and has lived and
taught Recreational Diving for 5 Years in the Red Sea, now is the
owner/partner in http://d-atmosphere.com/blog
and http://deep-divers.com/
along with his German Wife Andrea. |
