open/close

Website Options

Options below affect the visual display. Choices are stored using browser cookies.

  • The low bandwidth option causes most images to disappear and stops external fonts from loading.

  • The underlined links option causes all website links to become underlined, making them easier to distinguish.

  • The high contrast option causes colors to change to mostly black and white.

Utility Navigation

Controlled Descent

2015
Oct 21

Video Display Options

  • YouTube
  • HTML5
  • Why choose?
close

The current state of video display on the web provides many challenges. If this website contains a YouTube video, we default to it since it is more likely to work in your choice of device/browser. That may not provide the experience you prefer, so we offer the option to choose your display: YouTube or HTML5. Please note the HTML5 video option may not work at all in some browsers/devices. If you cannot view the video you can download it from our video repository.

Transcript Content

WEBVTT

00:00:05.000 --> 00:00:07.000
[underwater exhalation]

00:00:11.500 --> 00:00:14.600
Divers need to be able to perform a controlled
descent

00:00:14.600 --> 00:00:18.233
and must be able to slow or stop if they have a
problem clearing their ears or sinuses.

00:00:18.233 --> 00:00:21.266
Not all dives are on the bottom.

00:00:21.266 --> 00:00:23.266
Some dives are mid-water or on a ship's hull.

00:00:23.266 --> 00:00:27.932
if you plan a dive to a certain depth, you should
not exceed that depth or your dive tables will
change.

00:00:28.733 --> 00:00:32.766
In the case of Nitrox you may have a maximum
depth based on what you are breathing.

00:00:35.133 --> 00:00:38.999
Before you make a controlled descent, there are
a few things you need to do.

00:00:39.000 --> 00:00:42.433
Check with your dive buddies and make sure
they are ready to leave surface.

00:00:42.433 --> 00:00:46.766
Get a compass heading on the beach, or your
exit point, as a reference.

00:00:46.766 --> 00:00:52.099
Check your cylinder pressure and then check
your time so you know when your dive starts.

00:00:52.100 --> 00:00:59.866
To make a controlled descent, put your inflator/
deflator high above your left shoulder and vent
air from your BC until you start to descend.

00:00:59.866 --> 00:01:06.099
On the way down, if you need to, You can add
small bursts of air to your BC to control your
descent.

00:01:06.100 --> 00:01:11.233
When making a controlled descent we always
keep our feet beneath us so if we need to use
our fins

00:01:11.233 --> 00:01:16.399
to slow or stop our descent because of ear or
sinus issues, we can.

00:01:16.400 --> 00:01:25.233
We only descend as fast as the slowest diver in
the team and we always stay together as buddy
teams when diving.

00:01:25.233 --> 00:01:26.633
That's a controlled descent.

Closed Caption File

Topics

Operation

Topics

Audience tags

Share

  • Facebook
  • Twitter
  • LinkedIn
  • Twitter

The information provided using this web site is only intended to be general summary information to the public. It is not intended to take the place of either written law or regulations.

Neither NOAA, the OMAO, the individuals featured in the videos, nor any other party associated with the production of these videos accept responsibility for any accident or injury resulting from the use of materials contained herein.

Information in these videos is current as of the date of production. Although we try to keep this information up-to-date and accurate, neither NOAA, the OMAO, nor any agency, officer, or employee thereof warrants the accuracy, completeness, or usefulness of any information, products, or processes disclosed herein, and shall not be held responsible for any losses caused by reliance on the accuracy, reliability or timeliness of such information. Portions of such information may be incorrect or out of date. Any person or entity that relies on any information obtained from the instructional videos herein does so at his or her own risk.

The views and opinions of authors expressed on OMAO websites do not necessarily state or reflect those of the U.S. Government, and they may not be used for advertising or product endorsement purposes.

OMAO makes every effort to provide virus-free files but does not guarantee uncorrupted files.

You are here: https://www.omao.noaa.gov/find/media/video/controlled-descent
Reviewed: June 20, 2016. Contact us with page issues.

*ac
"Access controlled" content.
top