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Are you planning on taking an underwater survey? Well here’s a diving tip from instructor and explorer John Kendall on how not to lose your pencil while task loaded.

Tools needed to collect survey data:

  • Compass
  • Wetnotes or slate
  • String/line
  • Pencils

Tools needed to alter compass:

  • Compass
  • Drill and drill bit
  • Zip Ties
  • Pencil


  • Drill small holes in compass as shown in video
  • Use zip-ties to attach pencil to compass

This makes holding them both much easier. Get more great tips or learn more about diving

at or by watching our other tips and tricks on InDepth.

John Kendall is an avid diving adventurer and explorer. He loves to document interesting dive sites, especially those with archaeological or geological significance using photogrammetry. Although based in the UK, Kendall travels worldwide to teach GUE classes. He enjoys the process of helping divers become the best they can be.

Diving Tips and Tricks

Diving Tips and Tricks: Stowing Your Mask

Do you stow your mask on your head? Frontwards or backwards? Or do you place it around your neck? Ricardo Constantino offers a secure alternative that you might just find handy.




By Ricardo Constantino

A lost mask is never fun! In this Tips and Tricks, GUE Instructor Ricardo Constantino offers up a tip to keep your mask from getting lost at sea. This one-minute video could save the day!

Stowing your Scuba Mask

  • Unclip multi-purpose bolt snap
  • Clip to mask strap
  • Clip off to right chest D-Ring 

Ricardo Constantino studied engineering in South Africa and now leads the R&D department of a Portuguese petrol retail technology company. Actively involved in a number of diving projects worldwide, he manages a Project Baseline cave initiative on the major Portuguese caves. He enjoys diving for scientists and contributing to the growth of knowledge by exploring new cave passages, and he serves on the board of directors of two prestigious Portuguese scientific associations with links to underwater research.

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