this is why you always dive with a buddy and make sure your buddy is close by, so you can share air. doing this procedure from a significant depth will most likely result in serious injury or death due to lung over-expansion, and or DCS.
Good point! But there we always have a plan B for our plan B. If your buddy is too far away, and you have to make an ascent, it's critical to breathe out on the way up. When we're teaching this skill, it is not validated until bubbles are being produced (as you can kind of see @1:39-1:45, but it's not perfect..) AND the student produces and audible sound to accompany the exhalation. Again, certainly imperfect. But also certainly better than no plan for a worst-case scenario.
Thanks for your valuable comment! We understand your approach and share the same vision that all skills should be executed in neutral buoyancy. However, from a training approach, we usually teach skills in a controllable environment like a pool/confined water first where the impact on the environment is minimal and beginner students have the chance to practice in a stable position first. Later, training skills get more refined and will be repeated in neutral buoyancy in the open water. The skill videos are meant to show the students which skills they are going to learn in their next pool session, therefore we show those kneeking on the ground at first, but later on skills like no mask swim are shown in a neutrally buoyant position, which is correct from the learning approach. Be assured that we follow our own Blue Oceans code where SSI commits to execute sustainable diving practices and protects the environment as much as possible.
Hi. I have a couple questions to ask. I'm not exactly clear what the difference is between Controlled Emergency Swimming Assent and Buoyant Emergency Ascent. I'm also struggling to understand the difference between Alternate Air Source and Alternate Inflator Regulator, because the textbook makes it sound like they both involve giving a breathing tube to your buddy. Are they both the same tube?
Hello Jake, please contact your SSI Center in your area. You can find the next SSI Center via our center locator here: www.divessi.com/de/locator/trainingcenters They can help you with such detailed questions.
Hi,my name is Jeffry i from Indonesia I have lost my SSi Master Diver and advance open water license Both license are old Advance open water year 1994 and Master Diver 1996 My question is can i got a new license from SSI?
Hello Jefry, yes you can order a replacement card my.divessi.com/order_replacement_card (you need to login into your MySSI account). Or you can also go to your next SSI Center and they can print it out for you. Please note that this will cost a fee. If the digital card is enough for you, you can also just download the MySSI App and login with your account.
Flaring out helps to reduce the rate of ascent in the last few meters, where the pressure difference is the greatest. Consider it the quick, emergency version of the safety stop.
The laying on your back or flaring out is to increase drag in the water and help slow down your ascent, thereby reducing the risks inherent to making a buoyant ascent from significant depth. As an added bonus, should you lose conscious on the way up, at least you're gonna surface facing upwards.
v_terminal = √(2*(F_buoyancy - F_gravity)/(ρ*A*Cd)) , where Cd is the drag coefficient and A is the projected surface area. By spreading yourself against the vertical axis, you increase both the A and the Cd values which can significantly reduce the terminal velocity of the ascent. For example, if the A*Cd product is quadrupled, the ascent rate would halve.
I think she deflates the bcd. You should try everything to slow down your ascending, including deflating bcd and stretch out legs/arms to a starfish shape.
this music is absolutely fantastic! goosebumps
this is why you always dive with a buddy and make sure your buddy is close by, so you can share air. doing this procedure from a significant depth will most likely result in serious injury or death due to lung over-expansion, and or DCS.
Good point! But there we always have a plan B for our plan B. If your buddy is too far away, and you have to make an ascent, it's critical to breathe out on the way up. When we're teaching this skill, it is not validated until bubbles are being produced (as you can kind of see @1:39-1:45, but it's not perfect..) AND the student produces and audible sound to accompany the exhalation. Again, certainly imperfect. But also certainly better than no plan for a worst-case scenario.
Salam.dari ssi semarang
greetings back
Why always on knees?
I've learned in my SSI Instructor course not to knee.
Thanks for your valuable comment! We understand your approach and share the same vision that all skills should be executed in neutral buoyancy. However, from a training approach, we usually teach skills in a controllable environment like a pool/confined water first where the impact on the environment is minimal and beginner students have the chance to practice in a stable position first. Later, training skills get more refined and will be repeated in neutral buoyancy in the open water. The skill videos are meant to show the students which skills they are going to learn in their next pool session, therefore we show those kneeking on the ground at first, but later on skills like no mask swim are shown in a neutrally buoyant position, which is correct from the learning approach. Be assured that we follow our own Blue Oceans code where SSI commits to execute sustainable diving practices and protects the environment as much as possible.
Hi. I have a couple questions to ask. I'm not exactly clear what the difference is between Controlled Emergency Swimming Assent and Buoyant Emergency Ascent. I'm also struggling to understand the difference between Alternate Air Source and Alternate Inflator Regulator, because the textbook makes it sound like they both involve giving a breathing tube to your buddy. Are they both the same tube?
Hello Jake, please contact your SSI Center in your area. You can find the next SSI Center via our center locator here: www.divessi.com/de/locator/trainingcenters They can help you with such detailed questions.
Do you really teach that by closing the air supply?
depends on the instructor and center
When I learned the ow, our instructor did close the air supply, of course he told us in advance.
Hi,my name is Jeffry i from Indonesia
I have lost my SSi Master Diver and advance open water license
Both license are old Advance open water year 1994 and Master Diver 1996
My question is can i got a new license from SSI?
Hello Jefry, yes you can order a replacement card my.divessi.com/order_replacement_card (you need to login into your MySSI account). Or you can also go to your next SSI Center and they can print it out for you. Please note that this will cost a fee. If the digital card is enough for you, you can also just download the MySSI App and login with your account.
Drop your weights? Turn off air valve?
I guess if you want to get to the surface fast and make it realistic. 😳
I dont think PADI taught us to lay on our backs.. near the top. I heard this os an SSI thing? Curious why?
Hello Kenny, please contact the local service center in your area for detailed information: www.divessi.com/de/join-ssi/highlights/contact
Flaring out helps to reduce the rate of ascent in the last few meters, where the pressure difference is the greatest. Consider it the quick, emergency version of the safety stop.
The laying on your back or flaring out is to increase drag in the water and help slow down your ascent, thereby reducing the risks inherent to making a buoyant ascent from significant depth.
As an added bonus, should you lose conscious on the way up, at least you're gonna surface facing upwards.
Padi did teach us that. I think you forgot.
v_terminal = √(2*(F_buoyancy - F_gravity)/(ρ*A*Cd)) , where Cd is the drag coefficient and A is the projected surface area. By spreading yourself against the vertical axis, you increase both the A and the Cd values which can significantly reduce the terminal velocity of the ascent. For example, if the A*Cd product is quadrupled, the ascent rate would halve.
lol you are out of air so you use your tank to inflate your bcd????i thought you were out of air. :)
I think she deflates the bcd. You should try everything to slow down your ascending, including deflating bcd and stretch out legs/arms to a starfish shape.
No need if you drop your weights😊