Equipped To Survive Equipped To Survive® Presents
The Survival Forum
Where do you want to go on ETS?

Page 2 of 3 < 1 2 3 >
Topic Options
#145898 - 08/25/08 09:31 PM Re: how to safely jump into the water from high up [Re: NIM]
BobS Offline
Old Hand

Registered: 02/08/08
Posts: 924
Loc: Toledo Ohio
Originally Posted By: NIM
Yes, DO CROSS YOUR LEGS!

Besides having the feeling of being kicked in the ba*ls you will get a high power enema. It is a VERY violating feeling and uncomfortable. (Yes that is experience talking).-NIM


Please don’t give any more info on this, that was more then enough! shocked shocked shocked

Top
#145901 - 08/25/08 09:49 PM Re: how to safely jump into the water from high up [Re: BobS]
sodak Offline
Addict

Registered: 03/20/05
Posts: 410
Good comments all, and I agree. I have vertigo when going down feet first, and get off-camber. Try a nasal wash at 20 mph....

I was a lifeguard during summers in college, and used to practice diving - no instruction, form was lousy, but had a lot of fun. All off a 3 meter board Then i finally got the chance to try platforms. I tried the 5 meter first, to try and get the hang of it. It was basically like the 3 meter, but more of a rush - a lot of fun. Then I dove off the 10 meter. Nothing fancy, just a dive. I entered cleanly, and was shocked at how violent the impact was. It was much more than twice the 5 meter... I might try it again, but without instruction, once was enough.

Remember, 32 feet per second per second (9.8 meters per second per second). So you're basically doing 33 mph off a 10 meter platform.

Given the violence of the 10m impact, I wonder what everyone thinks a survivable height is. I don't think I'd want to go much higher without a chute.

Top
#145902 - 08/25/08 09:50 PM Re: how to safely jump into the water from high up [Re: BobS]
Raspy Offline
Enthusiast

Registered: 01/08/04
Posts: 351
Loc: Centre Hall Pa
The old Navy method was to
Drop feet first toes pointed
Cross legs at the ankle
Cross arms
Grasp opposite shoulders
Tuck chin into chest
Keep elbows tight
DO NOT repeat DO NOT wear life jacket
Grasp a strap to the jacket

You might be able to wear an inflatable style life jacket

Crossing the ankles keeps the impact from spreading the legs and breaking them. This minimizes the the impact on sensitive areas. It also reduces the risk of hydraulic impingement to lower body openings. Yes the entry can cause internal organs.

You want to be as streamlined a package as possible. You want to pierce the water as cleanly as you can. Not land splat. Cannonball dives don't work. At any significant height it is like hitting concrete.

You hold onto the life jacket. Yes when you hit the water you will lose it. But it should be near when you resurface. The jacket is bulky and meant to float. It will stay at the surface. If you are wearing it even or especially with crotch straps it will greatly magnify the impact. It will try to keep you at the surface and remove your head in the process along with other body parts. There will be no give such as a chute opening in skydiving.

Although things may have changed in 30 years since I learned how.


Edited by Raspy (08/25/08 09:52 PM)
_________________________
When in danger or in doubt
run in circles scream and shout
RAH

And always remember TANSTAAFL

Top
#145920 - 08/25/08 11:32 PM Re: how to safely jump into the water from high up [Re: Raspy]
big_al Offline
Addict

Registered: 01/04/06
Posts: 586
Loc: 20mi east of San Diego
Raspy:
I stand corrected, thank you. smile
_________________________
Some people try to turn back their odometers.
Not me, I want people to know "why" I look this way
I've traveled a long way and some of the roads weren't paved

Top
#145927 - 08/26/08 12:24 AM Re: how to safely jump into the water from high up [Re: Raspy]
MDinana Offline
Pooh-Bah

Registered: 03/08/07
Posts: 2208
Loc: Beer&Cheese country
Originally Posted By: Raspy
The old Navy method was to
Drop feet first toes pointed
Cross legs at the ankle
Cross arms
Grasp opposite shoulders
Tuck chin into chest
Keep elbows tight
DO NOT repeat DO NOT wear life jacket
Grasp a strap to the jacket

Although things may have changed in 30 years since I learned how.


I went through the basic course about 3 years ago, and it's essentially unchanged. I think they've added "Clench buttocks" and "pinch nose" to the routine. But, good advice on avoiding the enema and nasal rinse.

NO LIFE VEST. He's not kidding - remember, they're designed to keep you afloat, with your head out of the water. Often with a substantial neck portion. Guess what part likes to break around that collar?

Top
#145953 - 08/26/08 02:18 AM Re: how to safely jump into the water from high up [Re: MDinana]
BlueSky Offline
Newbie

Registered: 05/08/08
Posts: 36
Loc: DFW TX
I don't know the right way, but a former acquaintance jumped off this bridge into the water, 100' below. Somehow he lived, but he had bruises all over his body. As I recall, he said that he did cross his arms and legs, and did wear shoes. I didn't think to ask him if he got an enema from it.
http://en.wikipedia.org/wiki/Pennybacker_Bridge

He was prompted to jump after learning that someone died jumping from it.

Top
#145969 - 08/26/08 05:20 AM Re: how to safely jump into the water from high up [Re: BlueSky]
Ian Offline
Member

Registered: 05/15/07
Posts: 198
Loc: Scotland
We have now had a couple of deaths in the UK from kids and a new craze.

Google TOMBSTONING

Also have a look at

Tombstone Safety

Top
#145970 - 08/26/08 05:55 AM Re: how to safely jump into the water from high up [Re: BobS]
LeeG Offline
Member

Registered: 03/24/08
Posts: 100
Loc: Phoenix, AZ
Originally Posted By: BobS
How many feet does it take for a person to get up to terminal volecity,126 mph? After that point it doesn’t make a difference how many feet the drop is, does it? You reach your maximum speed and that’s it.


Terminal Velocity when in a maximum drag position (spread eagle) is roughly 124mph. If you are upright, it increases to about 200mph. It takes roughly 5.7 seconds of falling to reach 124 mph, during which you fall about 530 ft.

FYI, acceleration due to gravity (9.81m/s) is considerably faster than a Ferrari.

My math may be off, so feel free to correct me.

Top
#145988 - 08/26/08 12:36 PM Re: how to safely jump into the water from high up [Re: LeeG]
OldBaldGuy Offline
Geezer

Registered: 09/30/01
Posts: 5695
Loc: Former AFB in CA, recouping fr...
"...My math may be off, so feel free to correct me..."

Sounds close enough to me. Doing math gives me a headache...
_________________________
OBG

Top
#145991 - 08/26/08 12:56 PM Re: how to safely jump into the water from high up? [Re: Glock-A-Roo]
Am_Fear_Liath_Mor Offline
Carpal Tunnel

Registered: 08/03/07
Posts: 3078
Hi Glock-A-Roo

http://www.youtube.com/watch?v=xkjDyF1Oss4

I guess we'll just have to ask these kids from Arbroath.

Top
Page 2 of 3 < 1 2 3 >



Moderator:  Alan_Romania, Blast, cliff, Hikin_Jim 
March
Su M Tu W Th F Sa
1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31
Who's Online
0 registered (), 318 Guests and 5 Spiders online.
Key: Admin, Global Mod, Mod
Newest Members
GallenR, Jeebo, NicholasMarshall, Yadav, BenFoakes
5367 Registered Users
Newest Posts
What did you do today to prepare?
by dougwalkabout
03/27/24 11:21 PM
Zippo Butane Inserts
by dougwalkabout
03/27/24 11:11 PM
Question about a "Backyard Mutitool"
by Ren
03/17/24 01:00 AM
Problem in my WhatsApp configuration
by Chisel
03/09/24 01:55 PM
New Madrid Seismic Zone
by Jeanette_Isabelle
03/04/24 02:44 PM
EDC Reduction
by EchoingLaugh
03/02/24 04:12 PM
Using a Compass Without a Map
by KenK
02/28/24 12:22 AM
Newest Images
Tiny knife / wrench
Handmade knives
2"x2" Glass Signal Mirror, Retroreflective Mesh
Trade School Tool Kit
My Pocket Kit
Glossary
Test

WARNING & DISCLAIMER: SELECT AND USE OUTDOORS AND SURVIVAL EQUIPMENT, SUPPLIES AND TECHNIQUES AT YOUR OWN RISK. Information posted on this forum is not reviewed for accuracy and may not be reliable, use at your own risk. Please review the full WARNING & DISCLAIMER about information on this site.