How to Make Underwater Map for Briefing - IDC Bali Internship

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IDCBali

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Location
Bali
# of dives
5000 - ∞
Source: IDC Bali Internship - Blue Season Bali
One of the greatest skills every divemaster must possess is the ability to draw a map of the diving site to guarantee safety and also enhance the experience of divers. Mapping skills emanate from a deep knowledge of the diving site. This is a skill that will determine how good the interns under the divemaster will turn out to be. Doing divemaster internship in Bali will give you an upper hand compared to the other destinations. Bali dive sites topography varies widely which you can learn from in every single dive here.

dive-master-2.jpg


How to Make Underwater Map for Briefing
When conducting pre-briefing dives, you need to have a comprehensive map drafted out of intense knowledge of the diving spot. As a divemaster intern, such knowledge should entail knowing the layout entry and exit points, hazards, distances, depths, currents, and hazards among other facts about the site.

While safety is a big concern in any diving site, it is possible for divers to have a great experience by knowing where they are at any time during the dive. Drawing an underwater map is part of the learning skills in Underwater Navigator – a PADI certification course.

To guarantee you ace the certification requirements, here are some tips to help you draft a reliable underwater map:

  • Map out a shallow site when snorkeling to get a better view of the layout. To do this, make sure you check that the visibility is good enough
  • Prepare all the required equipment and start by sketching the map from memory on a rough draft. This will help you add the correct measurements and bearing as you go along. This working slate will also help you build parameters that will guide the dives. On your map, note kick cycle to meter conversions or if not possible, you can convert at the end of it all.
  • Identify a central location to act as your measurement guide. A buoy comes in handy in this case as you can attach a reel to get the right measurements. Always be careful not to harm marine life throughout the process. It is important to identify landmarks which will act as guidelines on your map and make sure the measurements are correct.
  • Ensure you cover a large area when mapping and identify all outstanding features including rocks, corals, sponges and other permanent features. It is also important to note those features that should not be missed and ensure all hazards are part of the map. Entry and exit points should also be marked clearly.
  • Use a grid and rulers to draw to scale to ensure any inconsistencies on the map can easily be identified and another mapping on that area can easily be done.
Making an underwater map should be a team effort and you should always avoid mapping an area that is too extensive. Plan carefully, be realistic about the goals, avoid taking shortcuts and keep improving the map every time you dive during your divemaster internship. Your route to PADI professional divemaster or instructor begins here.
 
I enjoyed doing my mapping. Here, all the possible shore sites local divers around Halifax would possibly dive had already been mapped by previous DM Candidates or others. Our shop has them on their website. So to be honest, I just picked a very easy site close to my home that I knew very well. One reason was I had no buddy to help--like with holding & moving lines, etc. Another reason was that it was close to home so I didn't spend all day driving to & from the known sites closer to the shop. It was OK with my Instructor so it was OK with me. While it did involve a number of tasks and a fair bit of thinking, I've always wondered what it really has to do with what you'll do as a working DM. After posting this I'm sure I'll find out.
---Maybe it's like the "equipment exchange"-a bunch of task loading to see if you can do it?
Another curiosity I've had is what I mentioned about running out of reasonable sites to map considering there are a gazillion DMs. Would that not happen anywhere? Do DMCs then just map out sites that are already mapped? What is the situation in Bali?

Just a couple of other "picky" points--
--I had taken the UW Nav. course and of course that came in real handy. Would that suggest that all DM candidates take it before the DM course? Otherwise you get the Nav. procedures on your own?
-- It can't be a team effort if you are buddyless.
 
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Not to be too picky, but in the photo it appears that neither diver has a secondary 2nd stage regulator anywhere near the front of their kits. I'm sure PADI would be horrified.

Don't mind me - I'm just jealous that I won't be diving in Bali anytime soon ;(
 
Not to be too picky, but in the photo it appears that neither diver has a secondary 2nd stage regulator anywhere near the front of their kits. I'm sure PADI would be horrified.

Don't mind me - I'm just jealous that I won't be diving in Bali anytime soon ;(

Golden Triangle, be damned!! Same for trim.
 
Console is off on its own as well. Of course people do things differently in other parts of the world.


Bob
 
Not to be too picky, but in the photo it appears that neither diver has a secondary 2nd stage regulator anywhere near the front of their kits. I'm sure PADI would be horrified.(
I would say that less than 33% of people I dive with have their octopus on the front of their body. Not a big deal.
 
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