Deep and SandR Specialties are not prerequisites to DM Certification. If you have these 2 Specialties, you can skip the related workshops (Skill 4 and 5) during the DM Course. These workshop do not have any minimum number of dives required, but specific requirements. Instructors has the freedom to adjust to the candidate level. Local shops tends to add these 2 specialities in the DM Course to sell 2 more specialties. PADI Japan prefers this solution.
Skill 4 Search and Recovery Scenario
Set up various search and recovery scenarios that allow
divemaster candidates to complete the following:
Demonstrate a methodical search of an area to find a
small submerged object.
Demonstrate a methodical search of an area to find
a submerged object not more than 10 kilograms/25
pounds negatively buoyant.
Tie the following knots correctly underwater: the
bowline, two half-hitches and a sheet bend.
Demonstrate how to safely rig and bring to the surface
an object not more than 10 kilograms/25 pounds
negatively buoyant using an appropriate lifting device.
Skill 5 Deep Dive Scenario
Conduct a deep dive in which divemaster candidates
complete the following:
Before the dive, prepare emergency breathing
equipment, and position it at the safety stop depth.
Descend using a reference line, wall or sloping bottom
as a visual guide only, while staying with a buddy and
controlling the descent rate.
Navigate with a compass at least 20 kick cycles away
from and back to the reference line or designated spot.
Use a depth gauge and timing device, or a dive
computer to monitor an ascent rate no faster than 18
metres/60 feet per minute while using a reference line,
wall or sloping bottom as a visual guide only.
Perform a 3-minute safety stop at 5 metres/15 feet
before surfacing without holding on to a reference line
for positioning.