HP Hartmann added the lesson Buoyancy Control to the elearning Private: Side Mount Open Water Diver in the group Basic Side Mount Open Water Diver

HP Hartmann added the lesson Examples to the elearning Private: Side Mount Open Water Diver in the group Basic Side Mount Open Water Diver

HP Hartmann added the lesson Steps to calculate the Rule of Thirds to the elearning Private: Side Mount Open Water Diver in the group Basic Side Mount Open Water Diver

HP Hartmann added the lesson Personal or Team Magic Number to the elearning Private: Side Mount Open Water Diver in the group Basic Side Mount Open Water Diver

HP Hartmann added the lesson Why the Rule of Thirds to the elearning Private: Side Mount Open Water Diver in the group Basic Side Mount Open Water Diver