IDC Underwater Navigation & Dive Planning 2

Question 1

What is the significance of 'current' in dive site selection and how should PADI instructors manage it during training?

Accepted Answer

Current affects diver safety, air consumption, and navigation — training should begin in current-free or minimal-current conditions before progressing to drift diving

Answer

Water current significantly affects diver safety and navigation; student training should start in calm conditions, with drift diving introduced only as a specialty skill for more experienced divers.

Question 2

How does a thermocline affect a diver's experience and what should instructors explain about it?

Accepted Answer

A thermocline is a sharp boundary between water layers of different temperatures, which can affect visibility and significantly affect diver comfort

Answer

A thermocline is a distinct temperature change between water layers — crossing it can cause a noticeable temperature drop and reduced visibility, affecting diver comfort and planning.

Question 3

Why does PADI recommend a controlled descent rather than a free fall during recreational diving?

Accepted Answer

A controlled descent allows equalization of ears and sinuses at the diver's own pace and prevents barotrauma

Answer

A controlled descent allows divers to equalize their ears and sinuses as pressure increases, preventing potentially serious barotrauma injuries.

Question 4

What is the purpose of a 'debrief' after a training dive and what should PADI Instructors cover?

Accepted Answer

A debrief reviews dive objectives, skill performance, successes and areas for improvement, and previews upcoming training — it is a mandatory component of every training session

Answer

Post-dive debriefs are mandatory teaching moments covering performance review, skill feedback, environmental observations, safety reminders, and preparation for the next training session.

Question 5

What is the PADI 'Plan-Brief-Execute-Debrief' (PBED) instructional process?

Accepted Answer

The four-step instructional cycle for every PADI training session: plan the session, brief students, execute the dives, debrief afterward

Answer

PBED is PADI's four-step instructional framework applied to every training session: planning content and objectives, briefing students, executing the session, then debriefing performance.

IDC - Certified Instructor Development Course Trainer Practice Test

IDC - Certified Instructor Development Course Trainer Practice Test

IDC Underwater Navigation & Dive Planning 2