When should you expect to see diluent loss on the indicator?
Only on descent when diluent is added to the bag or when the bypass is pressed.
How big is the breathing bag?
As big as maximum displacement
equal to the combined volume of both lungs.
What is dangerous about CO2 toxicity and the MK16?
The rig displays no visual warning signs for high CO2. Divers must recognize symptoms
How long does it take a diver to metabolize the O2 in the breathing loop (to not sustain life) if no O2 was added?
2-5 minutes
How does the MK16 differ from other rebreathers when it comes to maintaining O2 concentrations?
It uses a direct control method; constant O2 level monitoring to keep the partial pressure where it needs to be.
How many training dives are recommended to be at night/low visability?
at least half
Repet rules for decompression dives shallower than 200 FSW?
x3 No D dives
x1 Decompression Dive
4 hours total a day
16 hours total a week
Repet rules for No D dives shallower than 200 FSW?
Unlimited No D dives
4 hours total a day
16 hours total a week
Repet rules for dives deeper than 200 FSW?
No Repet dives
How can you plan Repet No D dives with Decompression dives?
They can precede, follow, or bracket the Decompression dive
How can you plan an exceptional exposure dive?
Require approval IAW OPNAV 3150.27
How do you initially qualify as a MK16 diver?
Completion of a formal course approved through their respective Learning Center under the Naval Education and Training Command (NETC).
How long do MK16 qualifications stay in affect?
As long as diver qualifications are maintained in accordance with their respective Military Personnel Manual article.
How can a diver who is qualified in MK16 dive another EC-UBA?
Demonstrate knowledge in:
-Configuration differences
-ppO2 setpoints
-EPs/OPs
Complete:
-Full missions, predives, postdives
-One open water training dive to at least 40 FSW
-Formal documentation signed by CO
How do you re-familiarize divers who have not dove MK16 in the last 6 months?
-Refamiliarize with OPs/EPs
-Complete open water training dive
What is the typical primary limiting factor?
O2 Flask Endurance
How do you re-familiarize divers who have not completed a decompression dive in the last 6 months?
Complete open water training dives (No-D) with shallow, simulated decompression stops
Minimum manning for MK16 dive side with two divers?
5
What may standby not have donned?
MK16/SCUBA, mask, or fins
How many tenders per diver?
One tender per diver or per buddy pair
What positions can the diving supervisor act as on the dive side?
Logs or standby tender
Unusual loss of diluent from a dive could indicate what?
-Excessive Purging
-Open Circuit Breathing
-Frequent Depth Changes
-Mask Leaks
When are you allowed to dive without a buddy line?
With CO or OIC (designated) approval when:
-Situations when not feasible
-Poses greater hazard
When can standby be in SCUBA?
No D training dives
