emergency ascent

The diver should not waste time while making the choice of which emergency ascent procedure to use.

Let me show you our emergency ascent system.

This theory is consistent with the observation that they made no apparent attempt to make an emergency ascent.

The power takeoff and the emergency ascent had sucked up a lot of his precious fuel.

Generally, these conditions, because they prevent immediate direct emergency ascent, may define technical diving.

Now it was making an emergency ascent.

Emergency ascents - how to return to the surface without injury in the event of a breathing supply interruption.

Still, at some point Doug must have done an emergency ascent, because he no longer had either his weight belt nor his air tank.

Adequate emergency ascent procedure training, and sufficient practice to remain adept in the requisite skills.

If the chosen donor has sufficient gas, and is competent to share by this method, an emergency ascent may be accomplished safely.

"The Doodlebug's malfunctioning- we're making an emergency ascent."

An emergency ascent is an ascent to the surface by a diver in an emergency.

Emergency ascent training policy differs considerably among the certification agencies, and has been the subject of some controversy regarding risk-benefit.

An emergency ascent usually implies that the diver initiated the ascent voluntarily, and made the choice of the procedure.

Emergency ascent (diving)

Well, we've"-he gave a modest little laugh-"actually, I did most of the work, but anyway, we've developed an emergency ascent system on both submarines.

A reserve air ascent is not traditionally considered an emergency ascent, as it was the standard procedure before the use of submersible pressure gauges became widespread.

However, The Scotsman understands that the vessel had to make an emergency ascent to the surface in order to avoid a possible contamination of her crew's air supply.

Controlled emergency ascents are almost always a consequence of loss of breathing gas, while uncontrolled ascents are usually the result of a buoyancy control failure.

This policy is a general agreement that emergency ascent training is worth the risk on ethical grounds, and recommends those procedures which the agencies consider most appropriate for teaching recreational divers.

The risk of decompression sickness during an emergency ascent is probably no greater than the risk during a normal ascent at the same ascent rate after the same dive profile.

THE newest submarine for the Royal Navy had to make an emergency ascent during trials off the west coast of Scotland yesterday after fears of contamination to her air supplies.

Whether attached to the primary cylinder, or slung at the chest, these cylinders often presented problems with stability and streamlining, whilst simultaneously only providing a bare minimum supply of air for emergency ascent.

In an emergency ascent, the diver simply tries to get to the surface as rapidly as possible, slowly exhaling into the water along the way to prevent injuries caused by his lungs expanding too rapidly with the decreasing pressure.

Drowning is the most likely consequence of a failure to reach the surface during an independent emergency ascent, and is a significant risk even if the diver reaches the surface if he or she loses consciousness on the way.