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Line Tended Standby Diver

2016
Aug 30

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Transcript Content

WEBVTT

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

00:00:08.000 --> 00:00:14.000
You're going to send your diver to the bow of...
the survey boat. - Roger.

00:00:14.000 --> 00:00:19.000
Team 9, you're going to send yours underneath
the stern.

00:00:19.000 --> 00:00:25.000
Team 8, you're going to try and get yours to that
ladder right there. -The ladder all the way over
there? - yeah, in the middle of the pier...

00:00:25.000 --> 00:00:31.000
Hi, my name is Bill Gordon. I'm one of the
instructors at the NOAA Diving Center in
Seattle, Washington.

00:00:31.000 --> 00:00:40.000
In this training video, you will learn how and
when to deploy a line tended standby diver, both
as a line tender and a line-tended diver.

00:00:40.000 --> 00:00:45.000
OSHA-subject dives always require standby
divers to be present in case of an emergency.

00:00:45.000 --> 00:00:50.000
Either a buddy team or a single line tended diver
must be used.

00:00:50.000 --> 00:00:58.000
Launching a buddy team requires a total of 3
topside personnel: a Divemaster and two divers
working together as a buddy team.

00:00:58.000 --> 00:01:06.000
If a diving operation has a limited number of
people available, OSHA also allows for the use
of two topside personnel:

00:01:06.000 --> 00:01:09.000
a Divemaster that is also the line tender

00:01:09.000 --> 00:01:12.000
and a line-tended standby diver.

00:01:12.000 --> 00:01:15.000
What is a line tended standby diver?

00:01:15.000 --> 00:01:21.000
A line tended standby diver is tied to a tending
line that is tended by a topside support
personnel

00:01:21.000 --> 00:01:24.000
who will remain on the surface throughout all
diving operations.

00:01:26.000 --> 00:01:34.000
The line tended standby diver must be dressed
in, pre-dive checked and tied in before you
launch any divers into the water to do any work.

00:01:34.000 --> 00:01:41.000
In this video you will learn about the various
aspects that are necessary to use a line-tended
standby diver safely,

00:01:41.000 --> 00:01:44.000
including any specific NOAA requirements.

00:01:44.000 --> 00:01:46.000
after reviewing the equipment

00:01:46.000 --> 00:01:50.000
and the basic line pull signals, we will
demonstrate how to set up your dive site,

00:01:50.000 --> 00:01:55.000
how to set up the diver, and how line pull signals
should be given and answered.

00:01:56.000 --> 00:02:00.000
We will also show you rescue procedures during
a mock emergency scenario,

00:02:00.000 --> 00:02:04.000
and finally, we will review any special
considerations and the Key Points.

00:02:11.000 --> 00:02:18.000
If you are going to use a line-tended standby
diver with a tending line

00:02:18.000 --> 00:02:22.000
the selection of the line is very important.

00:02:22.000 --> 00:02:27.000
Your line-tended standby diver needs to be able
to reach your team

00:02:27.000 --> 00:02:29.000
wherever they find themselves

00:02:29.000 --> 00:02:34.000
conducting diving operations. That's very critical.

00:02:34.000 --> 00:02:36.000
Because I'm tethered

00:02:36.000 --> 00:02:43.000
It does me no good as a rescuer, or you as a
buddy team, if I can't reach you to respond to an
emergency.

00:02:43.000 --> 00:02:48.000
So, when choosing to use a single, line-tended
standby diver,

00:02:48.000 --> 00:02:52.000
please ensure that you have an appropriate

00:02:52.000 --> 00:02:56.000
length of tending line.

00:02:56.000 --> 00:02:59.000
Now, when selecting a tending line

00:02:59.000 --> 00:03:02.000
some things are also important to note.

00:03:02.000 --> 00:03:07.000
You want a more or less neutrally buoyant line

00:03:07.000 --> 00:03:10.000
in the water. We use...

00:03:10.000 --> 00:03:12.000
this nylon line here.

00:03:12.000 --> 00:03:15.000
This is a 3/8 inch...

00:03:16.000 --> 00:03:19.000
nylon line. It has a high tensile strength.

00:03:19.000 --> 00:03:22.000
We recommend using synthetic line.

00:03:22.000 --> 00:03:28.000
if you have hemp or jute, or some other natural
fiber, it's not recommended because

00:03:28.000 --> 00:03:35.000
it rots when its wet and it has very low tensile
strength

00:03:35.000 --> 00:03:39.000
so please choose the line appropriate...

00:03:39.000 --> 00:03:45.000
You want to make sure that if you do choose a
long length of tending line

00:03:45.000 --> 00:03:48.000
that your diver is going to be able to manage
that.

00:03:48.000 --> 00:03:51.000
You'll find that as we practice this here in just a
bit

00:03:51.000 --> 00:03:54.000
that when performing line pull signals

00:03:54.000 --> 00:03:57.000
on these lines...

00:03:57.000 --> 00:04:07.000
the longer the line that you have in the water, the
more difficult it is to transmit those line pulls
across that length.

00:04:07.000 --> 00:04:12.000
We do not recommend polypro line for a tending
line: it floats!

00:04:12.000 --> 00:04:18.000
If it floats it can get fouled on lots of different
things.

00:04:18.000 --> 00:04:20.000
Also,

00:04:20.000 --> 00:04:22.000
once you've chosen

00:04:22.000 --> 00:04:27.000
the appropriate length of line for your diving
operations...

00:04:27.000 --> 00:04:29.000
It's important to mark that line.

00:04:29.000 --> 00:04:34.000
We've developed a marking technique here...

00:04:35.000 --> 00:04:40.000
Because we're using white line

00:04:40.000 --> 00:04:48.000
We use three different colors of tape to indicate
distance along the length of that line.

00:04:48.000 --> 00:04:53.000
White tape indicates every 10 feet of our tending
line.

00:04:53.000 --> 00:05:04.000
because we're dealing with a white tending line
we have to put a piece of black tape prior to the
white tape

00:05:04.000 --> 00:05:08.000
from 0 to 50 feet.

00:05:09.000 --> 00:05:18.000
So that at 20 ft., approximately, I have 2 white
lines and 1 black line.

00:05:18.000 --> 00:05:24.000
At 3...or at 30 ft. I have 3 white lines and 1 black
line.

00:05:24.000 --> 00:05:33.000
40: I have 1 black line and 4 white lines. Now,
once we reach 5-0 ft. we change colors.

00:05:33.000 --> 00:05:35.000
We go...

00:05:35.000 --> 00:05:37.000
to one yellow line.

00:05:37.000 --> 00:05:43.000
So, for us, white lines indicate 10 ft. increments.

00:05:43.000 --> 00:05:48.000
Yellow lines indicate 50, or 5-0 ft. increments.

00:05:48.000 --> 00:05:53.000
So, at 6-0 ft. what two colors should I see?
[Voices from audience] - A yellow and a white...

00:05:53.000 --> 00:05:57.000
A yellow and a white. Will I see a black? [single
person responds] -No!

00:05:57.000 --> 00:05:58.000
Why?

00:05:58.000 --> 00:06:02.000
[muffled response from various people] -...yellow.
[Main speaker] - 'Cause I have a yellow! See...
you guys are smart!

00:06:03.000 --> 00:06:05.000
It's awesome!

00:06:05.000 --> 00:06:09.000
So: yellow and white. Now I have that...

00:06:09.000 --> 00:06:12.000

00:06:12.000 --> 00:06:20.000
I have a yellow...well, I've already passed it...a
yellow and 2 white. At 8-0 a yellow and 3
white...At 9-0

00:06:20.000 --> 00:06:23.000
a yellow and 4 white...

00:06:23.000 --> 00:06:29.000
And then, finally, the third colored tape that we
use to indicate length is red.

00:06:29.000 --> 00:06:35.000
At 100 ft. we should have a single red stripe.

00:06:35.000 --> 00:06:39.000
And lookie lookie: a single red stripe.

00:06:39.000 --> 00:06:41.000
Now you'll note that

00:06:41.000 --> 00:06:44.000
we mark our line

00:06:44.000 --> 00:06:46.000
from

00:06:46.000 --> 00:06:53.000
from the tender...or, correction, the diver's end.
We start marking from the diver's end.

00:06:53.000 --> 00:06:59.000
And, what we've also done here is we've...before
we've started our measuring process...

00:06:59.000 --> 00:07:05.000
we have kind of a length of line. We'll talk about
that here in a minute.

00:07:05.000 --> 00:07:07.000
So...

00:07:07.000 --> 00:07:12.000
at 110 ft. what should you see? [audience
voices] - ...red...white...

00:07:12.000 --> 00:07:16.000
One red and one white. Perfect.

00:07:16.000 --> 00:07:19.000
at 150 what should we see? [audience voices] -
A red and a yellow...

00:07:23.000 --> 00:07:25.000
That's 1-30...

00:07:25.000 --> 00:07:28.000
That's 1-40...

00:07:28.000 --> 00:07:31.000
Bam! 150 ft.

00:07:31.000 --> 00:07:33.000
So...

00:07:33.000 --> 00:07:35.000
white for every 10,

00:07:35.000 --> 00:07:37.000
yellow for every 50,

00:07:37.000 --> 00:07:38.000
red for every 100.

00:07:50.000 --> 00:07:55.000
OK. For our tending line, we've chosen a 5
gallon bucket,

00:07:55.000 --> 00:07:60.000
we've taken the lid and cut a hole at the top.

00:08:00.000 --> 00:08:03.000
There's no real special way to feed line into
this...

00:08:03.000 --> 00:08:06.000
for some reason, just faking it in like
this...works!

00:08:06.000 --> 00:08:10.000
You'd think, oh, that's going to get all tangled up

00:08:10.000 --> 00:08:15.000
but no. It doesn't. It's magic.

00:08:15.000 --> 00:08:18.000
Because we think positive thoughts [laughter]

00:08:18.000 --> 00:08:24.000
and we translate our positive thoughts into
action. And, well...the rest is...

00:08:25.000 --> 00:08:26.000
...it's just awesome!

00:08:26.000 --> 00:08:27.000
[laughter from audience]

00:08:33.000 --> 00:08:40.000
Line pull signals. There's 162 different line pull
signals that you need to know before tomorrow
morning...

00:08:40.000 --> 00:08:44.000
but there's an easy way to remember some of
these.

00:08:44.000 --> 00:08:47.000
One...if you get 1 line pull signal,

00:08:47.000 --> 00:08:49.000
1 means "stop"

00:08:49.000 --> 00:08:52.000
or "are you OK"...so, stop...

00:08:52.000 --> 00:08:56.000
stop...stop...or are you OK?

00:08:56.000 --> 00:09:01.000
2 line pull signals means "give slack", OK?

00:09:01.000 --> 00:09:06.000
3 line pull signals means "take up slack"

00:09:06.000 --> 00:09:12.000
4 line pull signals means "haul me to the-
surface"

00:09:12.000 --> 00:09:15.000
that's the easy way to remember those...

00:09:15.000 --> 00:09:23.000
Search! There's 7 letters in search. If you launch
a diver and you're going to use a line-tended
sweep search...

00:09:23.000 --> 00:09:28.000
when the diver enters the water you give them 7
line pull signals...they answer back 7...

00:09:28.000 --> 00:09:34.000
and the line pull signals mean pretty close to
the same but not exactly. One still means
"stop"

00:09:34.000 --> 00:09:40.000
but it's kind of "stop and search where you are".
It also means "are you OK?".

00:09:40.000 --> 00:09:44.000
2 still means "give slack"

00:09:44.000 --> 00:09:51.000
but there's a little bit added on when you're
doing search signals. It's the diver's
responsibility to keep tension on the tending line

00:09:51.000 --> 00:09:57.000
when doing a line-tended sweep search. Really,
it's always the diver's responsibility to keep
tension on the tending line.

00:09:57.000 --> 00:10:00.000
So, when you have a diver out there doing a line-
tended sweep search,

00:10:00.000 --> 00:10:06.000
they're always trying to swim away from the
tending line so that they can receive short
snappy line pull signals.

00:10:06.000 --> 00:10:12.000
In the case of 2, 2 pulls, "give slack", when
they're on search signals...

00:10:12.000 --> 00:10:18.000
They're always trying to swim away from you...if
you want to send the diver out 10 ft....you give
them 2 line pull signals...

00:10:18.000 --> 00:10:20.000
they will answer back 2...


00:10:20.000 --> 00:10:26.000
and then you just slack the line 10 ft. and then
stop letting out line.

00:10:26.000 --> 00:10:29.000
If you wanted to bring the diver in when they are
on search signals

00:10:29.000 --> 00:10:36.000
- a diver can only create about 5 lbs. of thrust,
so a diver really doesn't weigh anything
underwater -

00:10:36.000 --> 00:10:40.000
you would tell the diver that you're going to "give
slack"

00:10:40.000 --> 00:10:44.000
or you can also think of it as "adjust distance".

00:10:44.000 --> 00:10:49.000
The diver is always trying to swim away...You
give 2 line pull signals, if you want to bring them
back in,

00:10:49.000 --> 00:10:58.000
you just pull them back in as far as you want
and then you stop...Now...

00:10:58.000 --> 00:11:01.000
when on search signals,

00:11:01.000 --> 00:11:08.000
the diver, when they receive the line pull signals
always faces their tending line.

00:11:08.000 --> 00:11:15.000
So all of the signals you send for directions left
or right are interpreted by the diver facing the
tending line

00:11:15.000 --> 00:11:18.000
or facing you when they are in the water.

00:11:18.000 --> 00:11:24.000
So, if I was a diver and I received 3 line pull
signals when on search,

00:11:24.000 --> 00:11:33.000
that means the tender wants me to face my
tending line and swim to my right: R-I-T.

00:11:33.000 --> 00:11:39.000
If, when I am on line tending sweep search I
receive 4 line pull signals - I would answer back
4 - and that would mean

00:11:39.000 --> 00:11:48.000
that the tender wants me to face my tending line
and swim to my left: L-E-F-T.

00:11:48.000 --> 00:11:51.000
So we have 7 is "go on search",

00:11:51.000 --> 00:11:54.000
seven is also go off search...

00:11:54.000 --> 00:11:59.000
One means "stop and search where you are" or
"are you OK"...

00:11:59.000 --> 00:12:07.000
Two means...still means "give slack" or you can
think of it as "adjusting distance".

00:12:07.000 --> 00:12:14.000
Three means "face your tending line and swim
to your right", R-I-T...divers can't spell...

00:12:14.000 --> 00:12:21.000
and four means face your tending line and swim
to your left, L-E-F-T.

00:12:21.000 --> 00:12:23.000
So...that's the basic line pull signals...

00:12:23.000 --> 00:12:31.000
You've got, normal line pull signals are 1, 2, 3,
and 4. Then, if you're on search there's 7...and
1, 2, 3, 4...

00:12:31.000 --> 00:12:33.000
they're very similar but they mean slightly
different things.

00:12:34.000 --> 00:12:41.000
There are some other signals. There's line pull
signals for emergency situations.

00:12:41.000 --> 00:12:51.000
One of those is two, space two, space two, and
it sounds corny but this is the easiest way to
remember it, and it will work for you.

00:12:51.000 --> 00:13:01.000
Two, space two, space two means "I need you".
That means the diver that is line-tended needs
the assistance of another diver.

00:13:01.000 --> 00:13:07.000
Three, space three, space three means "I'm
fould but I can clear myself".

00:13:07.000 --> 00:13:16.000
The only line pull signal that is not answered as
received is four, space four, space four

00:13:16.000 --> 00:13:20.000
If you ever get four, space four, space four you
need to haul that diver to the surface
IMMEDIATELY.

00:13:20.000 --> 00:13:25.000
That means they are drowning and they need to
be brought to the surface.

00:13:25.000 --> 00:13:31.000
Four, space four, space four is the only line pull
signal that is not answered as given.

00:13:31.000 --> 00:13:32.000
other than that

00:13:32.000 --> 00:13:35.000
all line pull signals are answered as given.

00:13:35.000 --> 00:13:37.000
So, that's the easy way to remember line pull
signals.

00:13:39.000 --> 00:13:41.000
Why isn't one line pull signal

00:13:41.000 --> 00:13:44.000
the shortest line pull signal of them all:

00:13:44.000 --> 00:13:47.000
"haul me to the surface immediately I am
drowning"?

00:13:47.000 --> 00:13:53.000
Well, if you think about it, it might be the diver is
working underwater, and their line gets tugged a
little bit,

00:13:53.000 --> 00:13:56.000
the next thing they know they'd be at the
surface.

00:13:56.000 --> 00:13:60.000
So, that's why it is a distinct four, space four,
space four.

00:14:06.000 --> 00:14:13.000
Before you tie your line-tended standby diver in,
you need to secure the top side end of the
tending line to an immovable object.

00:14:13.000 --> 00:14:17.000
To do this we tie a bowline around the object.
EVERYBODY should be able to tie a bowline,

00:14:17.000 --> 00:14:23.000
if you only know how to tie one knot, as a diver,
it needs to be this knot.

00:14:23.000 --> 00:14:27.000
Notice how the tail, or the end of the line, is on
the inside of the knot.

00:14:27.000 --> 00:14:29.000
That stops it from getting snagged on things.

00:14:29.000 --> 00:14:35.000
and then to secure this you can tie an additional
half hitch around it if you want.

00:14:35.000 --> 00:14:40.000
Now, before you tie in your standby diver, you
need to do a proper predive safety check.

00:14:40.000 --> 00:14:48.000
There's an entire video devoted to a predive
safety check that's done at demonstration
speed and demonstration quality

00:14:48.000 --> 00:14:51.000
where everything is talked about in great detail.

00:14:51.000 --> 00:14:56.000
Please go watch that video!

00:14:56.000 --> 00:15:03.000
Now, your line-tended standby diver has to be
completely pre-dive safety checked, AND tied in

00:15:03.000 --> 00:15:06.000
and ready to enter the water within 1 minute of
notification.

00:15:06.000 --> 00:15:12.000
The line-tended standby diver has to be dressed
in before you launch your buddy team.

00:15:16.000 --> 00:15:23.000
Line-tended standby diver doesn't give you the
option of putting one diver in the water. A line
tended standby diver is just that:

00:15:23.000 --> 00:15:31.000
a standby diver. This diver is for rescue
situations. This diver would only be deployed if
there was a problem in the water

00:15:31.000 --> 00:15:36.000
and the buddy team couldn't work together to
resolve it.

00:15:36.000 --> 00:15:43.000
Now, when we go to tie in the line-tended
standby diver, we need to make sure that the
line is tied around the diver's waist.

00:15:43.000 --> 00:15:50.000
We never tie the line to a piece of equipment
that can be removed or pulled free of the diver
when they are in the water.

00:15:50.000 --> 00:15:55.000
Notice that the line goes up above the
cummerbund of the diver's buoyancy
compensator.

00:15:55.000 --> 00:16:00.000
And when we tie the line around the diver's waist
we always tie a bowline.

00:16:00.000 --> 00:16:08.000
A bowline is a knot that won't slip and won't
become tight around the diver's waist and make
it difficult for them to breathe.

00:16:08.000 --> 00:16:16.000
Also, when we tie the line around the diver's
waist, a good rule of thumb is leave the space of
about your fist in between the diver and the knot.

00:16:16.000 --> 00:16:19.000
That allows them to breathe.

00:16:19.000 --> 00:16:25.000
After you've done your predive safety check and
you've tied the diver in...

00:16:25.000 --> 00:16:30.000
then you can launch your buddy team that
would be going into the water to do work or
science.

00:16:30.000 --> 00:16:37.000
Here we're just going to go through the
procedures of how to tend a line-tended standby
diver.

00:16:49.000 --> 00:16:54.000
Before you launch your diver, you want to make
sure they can make it all the way to the water.

00:16:54.000 --> 00:17:02.000
So, we leave a loop of line, sometimes referred
to as a catenary.That way you know the diver
can make it all the way into the water.

00:17:09.000 --> 00:17:16.000
Once the diver makes their entrance...exchange
OK signs...Now we're going to send the diver out
on the surface.

00:17:16.000 --> 00:17:21.000
Remember here we are just practicing the
procedures for a line-tended standby diver.

00:17:30.000 --> 00:17:39.000
You should pay attention to the line pull signals.
A properly tended diver is like fishing.

00:17:39.000 --> 00:17:42.000
The proper amount of tension on the tending line
is enough to where you can feel what the diver

00:17:42.000 --> 00:17:45.000
is doing but not interfering with what they're
doing.

00:17:50.000 --> 00:17:55.000
When the diver gets to the bottom, they give a
one. Topside answers back with a one.

00:17:55.000 --> 00:17:59.000
All line pull signals are answered as given.

00:17:59.000 --> 00:18:02.000
Two: give slack.

00:18:02.000 --> 00:18:07.000
If slack is given the diver will swim away from
the line. The tender will stop the diver with one
line pull signal

00:18:07.000 --> 00:18:13.000
when they are in the position they want them in.

00:18:13.000 --> 00:18:20.000
To aknowledge, the diver answers back with one
line pull signal.

00:18:20.000 --> 00:18:23.000
Seven! Seven is search.

00:18:24.000 --> 00:18:32.000
Remember, all line pull signals are answered as
given...that way it's and aknowledgement that it
was received properly.

00:18:32.000 --> 00:18:42.000
Three! when on search is face your tending line -
keep tension on the tending line - and swim to
your right, or your R-I-T.

00:18:42.000 --> 00:18:46.000
Remember that it's the diver's responsibility to
keep tension on the tending line...

00:18:54.000 --> 00:19:00.000
Two! When on search, two means: if slack is
given, swim away, if tension is taken,

00:19:00.000 --> 00:19:06.000
like it's being done here, the tender will pull the
diver in until they're in the position they want
them in.

00:19:06.000 --> 00:19:09.000
Four!

00:19:09.000 --> 00:19:15.000
Face your tending line and swim to your left.
Remember this is from the diver's perspective.

00:19:15.000 --> 00:19:25.000
So, the diver will keep tension on the tending
line, and swim to their left, until they get a one
pull from the tender.

00:19:25.000 --> 00:19:29.000
One means stop.

00:19:34.000 --> 00:19:36.000
Three!

00:19:36.000 --> 00:19:43.000
From the diver's perspective that means face
your tending line and swim to your right or your
R-I-T.

00:19:43.000 --> 00:19:49.000
The diver will swim to their right until the tender
stops them with one line pull signal.

00:19:49.000 --> 00:19:54.000
Line pull signals! they need to be sharp, crisp,
snappy signals.

00:19:54.000 --> 00:20:02.000
If they're long, mushy tugs, it's easy to
misunderstand what the tender or the diver is
trying to say.

00:20:02.000 --> 00:20:07.000
It's not being rude to give a sharp, snappy line
pull signal. Trust me, everybody would prefer

00:20:07.000 --> 00:20:14.000
that versus mush being transmitted back and
forth.

00:20:14.000 --> 00:20:18.000
So the diver was just taken off search...and now
is given a four...

00:20:18.000 --> 00:20:20.000
so the diver will...

00:20:20.000 --> 00:20:22.000
go to proper hand positions...

00:20:22.000 --> 00:20:27.000
and swim to the surface keeping tension on the
tending line...

00:20:27.000 --> 00:20:34.000
Reason we do this is the tender can see what's
going on topside, the tender is controlling where
the diver surfaces.

00:20:34.000 --> 00:20:41.000
When the diver gets to the surface, they're going
to inflate their BC. The diver and tender will
exchange OK signs...

00:20:41.000 --> 00:20:46.000
and the tender can do all the work at this point.
If this was a rescue,

00:20:46.000 --> 00:20:53.000
the rescuer - which is the diver in the water -
would've just brought the victim to the surface.
the rescuer might be a little bit tired.

00:20:53.000 --> 00:20:57.000
The tender can pull both the rescuer and the
victim

00:20:57.000 --> 00:21:02.000
to the exit point that is the most convenient for
everybody.

00:21:02.000 --> 00:21:05.000
so that's line-tended standby diver procedures.

00:21:11.000 --> 00:21:16.000
Line-tended rescue procedures: in order to do
this,

00:21:16.000 --> 00:21:21.000
we're going to create a situation where we are
forced to launch the line-tended standby diver.

00:21:21.000 --> 00:21:26.000
so in this video, there's going to be a buddy
separation. One diver is not going to make it to

00:21:26.000 --> 00:21:33.000
the surface, their buddy that does make it to the
surface doesn't have enough air to go down and
rescue them.

00:21:36.000 --> 00:21:43.000
Remember, your line-tended standby diver
needs to be ready to enter the water within one
minute of notification.

00:21:43.000 --> 00:21:49.000
Before we launched our buddy team, we did a
complete predive safety check on the line-
tended standby diver,

00:21:49.000 --> 00:21:55.000
tied in the topside end of the line, and tied the
line around the diver's waist.

00:21:55.000 --> 00:21:57.000
So, here comes our scenario:

00:21:57.000 --> 00:22:06.000
the diver comes to the surface, doesn't have
enough air to go rescue his buddy. The diver
requests assistance or calls for help.

00:22:06.000 --> 00:22:12.000
At this point the line-tended standby diver needs
to enter the water within one minute of
notification.

00:22:12.000 --> 00:22:17.000
The tender gives instructions to the diver to exit
the water.

00:22:17.000 --> 00:22:22.000
The line-tended standby diver is deployed.

00:22:33.000 --> 00:22:35.000
As the rescue diver descends...

00:22:35.000 --> 00:22:37.000
rescue diver sees the victim...

00:22:37.000 --> 00:22:42.000
and when the rescue diver gets to the victim
they're going to give one big line pull signal.

00:22:42.000 --> 00:22:46.000
It's a sharp, snappy, crisp line pull signal. It's
like uppercase.

00:22:46.000 --> 00:22:53.000
It's like a line pull signal with an exclamation
point after it.

00:22:53.000 --> 00:22:59.000
Now, the rescue diver is going to choose to give
4 uppercase line pull signals.

00:22:59.000 --> 00:23:05.000
And when you do these 4 big tugs, that means
"haul me to the surface I have the victim".

00:23:05.000 --> 00:23:09.000
Doing this, the tender does all the work for the
rescue diver.

00:23:09.000 --> 00:23:16.000
Also, the tender is pulling both the victim and
the rescue diver directly towards the exit point,

00:23:16.000 --> 00:23:20.000
saving time.

00:23:20.000 --> 00:23:26.000
Once the rescue diver gets the victim to the
surface, they make them positively buoyant

00:23:26.000 --> 00:23:31.000
and they can start doing rescue breaths and
stripping equipment...

00:23:36.000 --> 00:23:43.000
Now, the rescue diver still has the line tied
around their waist. It's much easier for the
rescue diver to untie the line -

00:23:43.000 --> 00:23:50.000
remember, we tied a bowline - everybody should
be able to tie and untie a bowline without looking
at it.

00:23:50.000 --> 00:23:55.000
The rescue diver would untie themselves and
then they can swim to the exit point.

00:23:55.000 --> 00:23:59.000
Remember, a line-tended standby diver is only
used for rescue.

00:23:59.000 --> 00:24:07.000
A line-tended standby diver doesn't allow you to
put one diver in the water to do work or science.
they're only used for rescue.

00:24:09.000 --> 00:24:12.000
So, this is line-tended rescue on search.

00:24:12.000 --> 00:24:16.000
So here we've launched our line-tended standby
diver but the visibility is poor

00:24:16.000 --> 00:24:21.000
and the rescue diver doesn't drop right on top of
the stricken diver.

00:24:21.000 --> 00:24:25.000
When the diver gets to the bottom they give one
line pull signal.

00:24:25.000 --> 00:24:32.000
Realizing the visibility is poor, the diver can
request to be put on search. Seven line pull
signals.

00:24:32.000 --> 00:24:36.000
And the tender will answer back with seven to
acknowledge.

00:24:36.000 --> 00:24:40.000
And then the tender, using somebody at the
surface to help guide,

00:24:40.000 --> 00:24:43.000
can send the rescue diver using line pull signals

00:24:43.000 --> 00:24:48.000
on a search pattern to try and find the stricken
diver.

00:24:48.000 --> 00:24:58.000
Sometimes you will have bubbles coming to the
surface. Sometimes people have some sort of a
visual reference.

00:24:58.000 --> 00:25:03.000
So, on the first pass, the visibility is so poor the
diver doesn't find them.

00:25:03.000 --> 00:25:07.000
Tender gives 2 line pull signals, sending the diver
out.

00:25:07.000 --> 00:25:11.000
Remember, it is the diver's responsibility to keep
tension on the tending line.

00:25:11.000 --> 00:25:17.000
When the rescue diver finds them, it's one big
line pull signal. It's like an uppercase.

00:25:25.000 --> 00:25:28.000
Because the diver is farther away than the water
is deep,

00:25:28.000 --> 00:25:34.000
the rescue diver in this situation decides to bring
the diver to the surface

00:25:34.000 --> 00:25:36.000
dropping their weight belt,

00:25:36.000 --> 00:25:40.000
the diver and the victim will just swim directly to
the surface...

00:25:40.000 --> 00:25:45.000
and then you have a rescuer that is not
exhausted

00:25:45.000 --> 00:25:53.000
and the tender can pull both the diver and the
victim, doing all the work, in on the surface.

00:25:53.000 --> 00:25:57.000
So here, while the rescuer is being pulled in,

00:25:57.000 --> 00:26:02.000
the rescuer can work on rescue breaths and
starting to strip and tow equipment from the
victim.

00:26:08.000 --> 00:26:10.000
Notice that the tender

00:26:10.000 --> 00:26:15.000
will bring both the diver and the victim to the exit
point that's most convenient for them.

00:26:26.000 --> 00:26:30.000
Special situations for line tending.

00:26:30.000 --> 00:26:34.000
You cannot use a line-tended standby diver if
you are live boating.

00:26:34.000 --> 00:26:40.000
Because then you are putting a diver in the
water with a line tied around their waist next to a
propeller...or even a jet boat.

00:26:40.000 --> 00:26:43.000
No live boating with line-tended standby divers.

00:26:53.000 --> 00:26:58.000
Can a non-diver be a tender...Yes, a non-diver
can be a tender

00:26:58.000 --> 00:27:03.000
but they must go through the same training that
you're going through right now. You can't just
grab somebody off the deck

00:27:03.000 --> 00:27:07.000
and say: "hey, you're going to tend this line",
because they don't know line pull signals,

00:27:07.000 --> 00:27:15.000
they're not familiar with diving... those are some
of the requirements. In order to be a non-diving
tender

00:27:15.000 --> 00:27:19.000
you must be familiar with the diving operations
that are going on and you must know

00:27:19.000 --> 00:27:24.000
the line pull signals. Other things a non-diving
tender must be able to do

00:27:24.000 --> 00:27:33.000
is do a predive safety check and check the
divers before they get in the water. They should
also know how to keep logs...

00:27:33.000 --> 00:27:37.000
A non-diving tender must be familiar with the
diving operations.

00:27:53.000 --> 00:27:55.000
Before you launch

00:27:55.000 --> 00:28:03.000
your buddy team that's going to do work, you need to have your standby diver tied in and predive checked, so...

00:28:03.000 --> 00:28:08.000
you set that person up first, and then you set up your buddy team and you can launch them.

00:28:08.000 --> 00:28:12.000
What may happen is, if you go to launch your buddy team before you get your line-tended

00:28:12.000 --> 00:28:15.000
standby diver ready...they hit the water, there's a problem,

00:28:15.000 --> 00:28:19.000
you don't have a standby diver ready to go, they're useless!

00:28:19.000 --> 00:28:24.000
It is the diver's responsibility to keep tension on the tending line

00:28:24.000 --> 00:28:27.000
when doing line tended sweep search.

00:28:27.000 --> 00:28:33.000
The diver needs to constantly try and swim away from the line. The diver shouldn't take loops of line and add it up.

00:28:33.000 --> 00:28:41.000
The topside person controls the distance. But the diver needs to constantly try and swim away, just a few pounds of thrust...

00:28:41.000 --> 00:28:45.000
so that the line pull signals will be sharp, and clear, and crisp.

00:28:45.000 --> 00:28:50.000
The more line that's in the water, the more muffled those line pull signals are going to be.

00:28:50.000 --> 00:28:55.000
When giving line pull signals they need to be sharp, crisp snaps.

00:28:55.000 --> 00:29:01.000
Mushy line pull signals like this cannot be understood under water

00:29:01.000 --> 00:29:07.000
and a true line pull signal is at least 6 inches to a foot in length. So a proper line pull signal would look like...

00:29:07.000 --> 00:29:11.000
a snap like that. So you take all the tension out of the line

00:29:11.000 --> 00:29:17.000
and then it's a quick snap, like that. And the response should be a pull back on the line, like that.

00:29:17.000 --> 00:29:22.000
And we didn't make these line pull signals up. these line pull signals are universal through out the commercial diving industry,

00:29:22.000 --> 00:29:25.000
also the U.S. Navy,

00:29:25.000 --> 00:29:28.000
and for NOAA. So, if you learn these line pull signals

00:29:28.000 --> 00:29:35.000
you can go out to a commercial diving site and you can tell what the diver and the tender are talking about using line pull signals.

00:29:35.000 --> 00:29:38.000
Now, the Simpsons had an episode

00:29:38.000 --> 00:29:45.000
where they kind of poked fun at the line pull signals...it was grandpa Simpson had some paintings, I think at the bottom of a lake

00:29:45.000 --> 00:29:46.000
and they had Bart

00:29:46.000 --> 00:29:51.000
diving over the side of a boat to recover the paintings, and they were using line pull signals,

00:29:51.000 --> 00:29:55.000
and they had like 56 or 57 different line pull signals...

00:29:55.000 --> 00:29:59.000
the handful of line pull signals we just went over are the basic ones and the ones you need to know.

Topics

Operation

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