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Front Dive Shaft Propeller Line Kawasaki KVF360 Prairie KVF 360 4x4 Brute Force    US $54.99

Russian SOVIET military diving watch up to 700 deep propeller submarine design    US $259.99

Matchbox Sky Busters Dive Bomber Air Plane Silver Single Propeller Prop NEW    US $6.49

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10 SIMPLE TIPS TO CONSERVE AIR AND DIVE LONGER

There are very few more frustrating occurrences in scuba diving as having to abort the dive due to lack of air, while everybody else is still having fun down there. Being able to save air as you dive is one of the most important steps to become a good diver. Here are some tips that can help us improve our diving skills

Proper Weighting

Carrying extra weight makes a huge difference on air consumption- you have to inflate your BCD more thus increase drag, and your body's lower part tends to sink down, while upper part rise up- which increases drag furthermoreSimple buoyancy check before diving with a new gear, at a new area, or after along time without diving should do the trick

Buoyancy

Try to achieve and maintain neutral buoyancy as soon as you reach your desired depth. Simple trick is to try hover – breath normally, add minimal amount of air to the BCD, inhale fully to elevate yourself off the bottom and return to normal breathing

Move Slowly

There's hardly ever a need to dive fast- you use up energy and air a lot quicker, and probably scare marine creatures as you do so

Avoid Using Your Arms

Arm muscles are weaker than those in our legs, plus, arms and hands don’t propel us as much as our legs and fins do. Use your hands for signaling, snapping photos rather than swimming

Streamline

Keep all hoses secured, arms tucked, and try to swim as horizontal as possible, thus minimize drag, keep yourself and the equipment off the bottom and avoid damaging the marine environment.

Breathing

Don’t skip a breath. Breathe at the same tempo, long inhalations and exhalations

It's recommended to inhale and exhale as if whistling or sucking air. You can also pick a nice tune to help you breath at the same rhythm

Use Familiar Equipment

To be more relaxed and feel in control, buy your own equipment. You'll also need to make very few changes on estimating weights as mentioned in paragraph 1

Relax

Easy to say, but some newbie diver have a natural fear when diving. The more you dive the more confidence you gain, and the more you realize there's nothing to it

Practice

It all comes down to it. The more you dive the better you get. Consider participating in a Pick Performance Buoyancy Course that fine tunes you buoyancy skills

Dive Shallow

If you still use up air a lot quicker than your buddies, dive slightly shallower, where the air you breathe is less dense and allows you to dive longer

About the Author

PADI, SSI Staff Instructor, a biologist and an Underwater Photographer Find more valuable tips that can help you through picking the right scuba equipment , dive courses , dive destinations , snorkeling and more at http://knows-dive.com

Why cant a F6F-3 Hellcat reach mach-1 on a dive?

I need to find out why a F6F-3 Hellcat reach mach-1 on a dive from 20,000 and 30,000 ft. Given information is Zero-lift drag is .0211, Wing area 334 sq feet, weight 12,441 lb, 1500 hp engine, Zero-lift drag at mach-1 .211, and propeller efficiency is .3 at mach-1

The pilot would most probably get warning of increased vibration if he went too fast in a dive. The whole aerodynamics of a plane change as mach-1 is approached and supersonic planes demand a much sturdier construction than subsonic planes.

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